Forecasts for Southern Ontario and the National Capital Region


* NOTE: Corrected and/or amended bulletins are listed first *

 
FPCN11 CWTO 301930
Forecasts for Southern Ontario and the National Capital Region issued
by Environment Canada at 3.30 pm edt Sunday 30 April 2017 for tonight
Monday and Monday night.
The next scheduled forecast will be issued at 5.00 am Monday.

City of Toronto
Burlington - Oakville
Mississauga - Brampton
Vaughan - Richmond Hill - Markham.
Tonight..Mainly cloudy. A few showers beginning early this evening
 and ending near midnight. Risk of a thunderstorm this evening. Fog
 patches developing after midnight. Wind east 30 km/h gusting to 50
 becoming light after midnight. Temperature steady near 7.
Monday..Cloudy. A few showers beginning in the morning. Risk of a
 thunderstorm in the morning and afternoon. Fog patches dissipating
 in the morning. Wind becoming southwest 40 km/h gusting to 60 late
 in the morning. High 18 with temperature falling to 15 in the
 afternoon. UV index 3 or moderate.
Monday night..A few showers ending in the evening then mainly cloudy.
 60 percent chance of showers overnight. Wind southwest 40 km/h
 gusting to 60 becoming light in the evening. Low 9.

Windsor - Essex - Chatham-Kent.
Tonight..Showers or thunderstorms. Wind southeast 30 km/h becoming
 light this evening. Temperature rising to 17 by morning.
Monday..A few showers ending near noon then a mix of sun and cloud.
 Risk of a thunderstorm in the morning. Wind southwest 20 km/h
 increasing to 40 gusting to 60 late in the morning. Temperature
 falling to 12 in the afternoon. UV index 6 or high.
Monday night..Becoming cloudy in the evening with 70 percent chance
 of showers in the evening and overnight. Wind southwest 40 km/h
 gusting to 60 diminishing to 20 after midnight. Low 7.

Sarnia - Lambton.
Tonight..Showers or thunderstorms. Wind east 30 km/h gusting to 50
 becoming south 30 after midnight. Temperature rising to 15 by
 morning.
Monday..A few showers ending near noon then mainly cloudy with
 40 percent chance of showers. Risk of a thunderstorm in the morning.
 Wind southwest 40 km/h gusting to 60. High 16. UV index 6 or high.
Monday night..Cloudy. 60 percent chance of showers late in the
 evening and overnight. Wind southwest 40 km/h gusting to 60
 diminishing to 20 in the evening then increasing to 40 gusting to 60
 before morning. Low 7.

Elgin.
Tonight..Mainly cloudy. A few showers or thunderstorms beginning
 early this evening and ending near midnight. Wind east 30 km/h
 gusting to 50. Temperature rising to 15 by morning.
Monday..A few showers ending early in the afternoon then mainly
 cloudy with 40 percent chance of showers. Risk of a thunderstorm in
 the morning and early in the afternoon. Wind southwest 40 km/h
 gusting to 60. High 17. UV index 6 or high.
Monday night..Cloudy. A few showers beginning near midnight. Wind
 southwest 40 km/h gusting to 60 diminishing to 20 gusting to 50 in
 the evening. Low 7.

London - Middlesex.
Tonight..Mainly cloudy. A few showers or thunderstorms beginning
 early this evening and ending near midnight. Wind east 40 km/h
 gusting to 60 becoming southeast 20 near midnight. Temperature
 rising to 14 by morning.
Monday..A few showers ending early in the afternoon then mainly
 cloudy with 40 percent chance of showers. Risk of a thunderstorm in
 the morning and early in the afternoon. Wind southwest 40 km/h
 gusting to 60. High 16. UV index 6 or high.
Monday night..Cloudy. A few showers beginning near midnight. Wind
 southwest 40 km/h gusting to 60 diminishing to 20 near midnight then
 increasing to 40 gusting to 60 before morning. Low 7.

Simcoe - Delhi - Norfolk
Dunnville - Caledonia - Haldimand.
Tonight..Increasing cloudiness. A few showers or thunderstorms
 beginning early this evening and ending near midnight. Wind east
 30 km/h gusting to 50 becoming light after midnight. Temperature
 rising to 15 by morning.
Monday..Cloudy. A few showers beginning early in the morning. Risk of
 a thunderstorm in the morning and early in the afternoon. Wind south
 20 km/h becoming southwest 40 gusting to 60 late in the morning.
 High 18 with temperature falling to 13 in the afternoon. UV index 3
 or moderate.
Monday night..A few showers ending in the evening then mainly cloudy.
 Wind southwest 40 km/h gusting to 60 diminishing to 20 near midnight
 then increasing to 40 gusting to 60 before morning. Low 8.

Oxford - Brant.
Tonight..Mainly cloudy. A few showers or thunderstorms beginning
 early this evening and ending near midnight. Wind east 30 km/h
 gusting to 50 becoming light after midnight. Temperature rising
 to 14 by morning.
Monday..Mainly cloudy. A few showers beginning early in the morning.
 Risk of a thunderstorm in the morning and early in the afternoon.
 Wind south 20 km/h becoming southwest 40 gusting to 60 late in the
 morning. High 18. UV index 3 or moderate.
Monday night..A few showers ending in the evening then cloudy.
 60 percent chance of showers overnight. Wind southwest 40 km/h
 gusting to 60 diminishing to 20 near midnight. Low 7.

Niagara Falls - Welland - Southern Niagara Region.
Tonight..Increasing cloudiness. A few showers beginning early this
 evening and ending near midnight. Risk of a thunderstorm this
 evening. Wind northeast 30 km/h gusting to 50 becoming light late
 this evening. Wind becoming south 20 before morning. Temperature
 rising to 16 by morning.
Monday..Mainly cloudy. A few showers beginning in the morning. Risk
 of a thunderstorm in the morning and early in the afternoon. Wind
 south 20 km/h increasing to 40 gusting to 60 late in the morning.
 High 19 with temperature falling to 11 in the afternoon. UV index 3
 or moderate.
Monday night..A few showers ending in the evening then partly cloudy.
 Wind southwest 40 km/h gusting to 60. Low 9.

St. Catharines - Grimsby - Northern Niagara Region.
Tonight..Increasing cloudiness. A few showers beginning early this
 evening and ending near midnight. Risk of a thunderstorm this
 evening. Fog patches developing late this evening and dissipating
 before morning. Wind northeast 30 km/h gusting to 50 becoming light
 late this evening. Wind becoming south 20 before morning.
 Temperature rising to 19 by morning.
Monday..Mainly cloudy. A few showers beginning in the morning. Risk
 of a thunderstorm in the morning and early in the afternoon. Wind
 south 20 km/h increasing to 40 gusting to 60 late in the morning.
 High 21 with temperature falling to 13 in the afternoon. Humidex 25.
 UV index 3 or moderate.
Monday night..A few showers ending in the evening then partly cloudy.
 Wind southwest 40 km/h gusting to 60 becoming light in the evening.
 Wind becoming southwest 30 before morning. Low 9.

City of Hamilton.
Tonight..Increasing cloudiness. A few showers beginning early this
 evening and ending near midnight. Risk of a thunderstorm this
 evening. Fog patches developing late this evening and dissipating
 before morning. Wind northeast 40 km/h gusting to 60 diminishing to
 20 early this evening then becoming south 20 after midnight.
 Temperature rising to 11 by morning.
Monday..Cloudy. A few showers beginning in the morning. Risk of a
 thunderstorm in the morning and early in the afternoon. Wind south
 20 km/h increasing to 40 gusting to 60 late in the morning. High 18
 with temperature falling to 14 in the afternoon. UV index 3 or
 moderate.
Monday night..A few showers ending in the evening then mainly cloudy.
 Wind southwest 40 km/h gusting to 60 diminishing to 20 near
 midnight. Low 8.

Halton Hills - Milton
Kitchener - Cambridge - Region of Waterloo
Guelph - Erin - Southern Wellington County.
Tonight..Mainly cloudy. A few showers beginning early this evening
 and ending near midnight. Risk of a thunderstorm this evening. Fog
 patches overnight. Wind east 40 km/h gusting to 60 diminishing to 20
 this evening then becoming light after midnight. Temperature rising
 to 10 by morning.
Monday..Mainly cloudy. A few showers beginning early in the morning.
 Risk of a thunderstorm in the morning and early in the afternoon.
 Wind south 20 km/h becoming southwest 40 gusting to 60 late in the
 morning. High 18. UV index 3 or moderate.
Monday night..A few showers ending in the evening then cloudy.
 60 percent chance of showers overnight. Wind southwest 40 km/h
 gusting to 60. Low 7.

Caledon
Newmarket - Georgina - Northern York Region
Uxbridge - Beaverton - Northern Durham Region
Dufferin - Innisfil.
Tonight..Cloudy. A few showers beginning early this evening and
 ending after midnight. Risk of a thunderstorm this evening. Amount
 10 to 15 mm. Fog patches developing after midnight. Wind east
 30 km/h gusting to 50 becoming light after midnight. Temperature
 rising to 9 by morning.
Monday..Cloudy. A few showers beginning early in the morning. Risk of
 a thunderstorm in the morning and afternoon. Amount 5 to 10 mm. Wind
 becoming southwest 40 km/h gusting to 60 late in the morning.
 High 17. UV index 3 or moderate.
Monday night..A few showers ending in the evening then partly cloudy.
 Wind southwest 40 km/h gusting to 60 becoming light in the evening.
 Low 6.

Pickering - Oshawa - Southern Durham Region.
Tonight..Mainly cloudy. A few showers beginning early this evening
 and ending after midnight. Risk of a thunderstorm this evening. Fog
 patches developing near midnight. Wind east 30 km/h gusting to 50
 becoming light after midnight. Temperature steady near 7.
Monday..Cloudy. A few showers beginning in the morning. Risk of a
 thunderstorm late in the morning and in the afternoon. Fog patches
 dissipating early in the morning. Wind becoming southwest 40 km/h
 gusting to 60 late in the morning. High 18 with temperature falling
 to 15 in the afternoon. UV index 3 or moderate.
Monday night..A few showers ending in the evening then partly cloudy.
 Wind southwest 40 km/h gusting to 60 becoming light near midnight.
 Wind becoming southwest 30 gusting to 50 before morning. Low 7.

Goderich - Bluewater - Southern Huron County
Stratford - Mitchell - Southern Perth County.
Tonight..Mainly cloudy. A few showers beginning early this evening.
 Showers or a few thunderstorms this evening and after midnight. Wind
 east 30 km/h gusting to 50. Temperature rising to 14 by morning.
Monday..A few showers ending near noon then mainly cloudy with
 40 percent chance of showers. Risk of a thunderstorm in the morning.
 Wind southwest 40 km/h gusting to 60. High 16. UV index 6 or high.
Monday night..Mainly cloudy. 60 percent chance of showers overnight.
 Wind southwest 40 km/h gusting to 60. Low 6.

Wingham - Blyth - Northern Huron County
Listowel - Milverton - Northern Perth County
Mount Forest - Arthur - Northern Wellington County.
Tonight..Mainly cloudy. A few showers beginning early this evening.
 Showers or a few thunderstorms this evening and after midnight. Wind
 east 30 km/h gusting to 50. Temperature rising to 14 by morning.
Monday..A few showers ending near noon then mainly cloudy with
 40 percent chance of showers. Risk of a thunderstorm in the morning.
 Wind southwest 40 km/h gusting to 60. High 16. UV index 6 or high.
Monday night..Partly cloudy. Becoming cloudy after midnight with a
 few showers. Wind southwest 40 km/h gusting to 60 becoming light in
 the evening. Low plus 5.

Saugeen Shores - Kincardine - Southern Bruce County
Bruce Peninsula - Sauble Beach - Tobermory
Owen Sound - Blue Mountains - Northern Grey County.
Rainfall warning in effect.
Tonight..Rain at times heavy with risk of a thunderstorm. Amount 30
 to 40 mm. Wind east 30 km/h gusting to 50. Temperature rising to 14
 by morning.
Monday..Rain ending in the afternoon then a mix of sun and cloud with
 30 percent chance of showers. Risk of a thunderstorm in the morning
 and early in the afternoon. Amount 5 to 10 mm. Wind becoming
 southwest 40 km/h gusting to 60 late in the morning. High 16. UV
 index 6 or high.
Monday night..Partly cloudy. Becoming cloudy near midnight with
 70 percent chance of showers late in the evening and overnight. Wind
 southwest 40 km/h gusting to 60 diminishing to 20 after midnight.
 Low 6.

Hanover - Dundalk - Southern Grey County.
Tonight..Rain at times heavy with risk of a thunderstorm. Amount 20
 to 30 mm. Wind east 30 km/h gusting to 50. Temperature rising to 14
 by morning.
Monday..Rain ending in the afternoon then a mix of sun and cloud with
 40 percent chance of showers. Risk of a thunderstorm in the morning
 and early in the afternoon. Amount 5 to 10 mm. Wind becoming
 southwest 40 km/h gusting to 60 late in the morning. High 16. UV
 index 6 or high.
Monday night..Mainly cloudy. Periods of rain beginning late in the
 evening. Wind southwest 40 km/h gusting to 60 diminishing to 20
 after midnight. Low 6.

Barrie - Orillia - Midland.
Tonight..Showers ending overnight then cloudy. Risk of a
 thunderstorm. Amount 20 to 30 mm. Wind east 30 km/h gusting to 50
 becoming light after midnight. Temperature rising to 9 by morning.
Monday..Cloudy. Showers beginning early in the morning. Risk of a
 thunderstorm in the morning and afternoon. Amount 5 to 10 mm. Wind
 southeast 20 km/h becoming southwest 30 gusting to 50 near noon.
 High 17. UV index 3 or moderate.
Monday night..Showers ending in the evening then partly cloudy.
 40 percent chance of showers overnight. Wind southwest 30 km/h
 gusting to 50 becoming light in the evening. Low 6.

Belleville - Quinte - Northumberland.
Tonight..Mainly cloudy. A few showers beginning early this evening
 and ending near midnight. Risk of a thunderstorm this evening.
 Amount 5 to 10 mm. Wind northeast 20 km/h gusting to 40 becoming
 southeast 20 after midnight. Temperature rising to 10 by morning.
Monday..Cloudy. A few showers beginning in the morning. Risk of a
 thunderstorm late in the morning and in the afternoon. Amount 10 mm.
 Wind southeast 30 km/h. High 20. UV index 3 or moderate.
Monday night..A few showers ending after midnight then mainly cloudy.
 Amount 5 mm. Wind southeast 30 km/h becoming light in the evening.
 Low 7.

Kingston - Prince Edward.
Tonight..Mainly cloudy. A few showers beginning early this evening
 and ending near midnight. Risk of a thunderstorm this evening.
 Amount 5 to 10 mm. Wind northeast 20 km/h gusting to 40 becoming
 southeast 20 after midnight. Temperature rising to 11 by morning.
Monday..Mainly cloudy. A few showers beginning late in the morning.
 Risk of a thunderstorm in the afternoon. Amount 10 mm. Wind
 southeast 30 km/h. High 20. UV index 3 or moderate.
Monday night..A few showers ending near midnight then mainly cloudy
 with 60 percent chance of showers. Risk of a thunderstorm early in
 the evening. Amount 10 to 15 mm. Wind southeast 30 km/h becoming
 southwest 20 in the evening then light after midnight. Low 7.

Lindsay - Southern Kawartha Lakes
Peterborough City - Lakefield - Southern Peterborough County.
Tonight..Cloudy. A few showers beginning early this evening and
 ending overnight. Risk of a thunderstorm this evening. Amount 10 to
 15 mm. Wind east 20 km/h gusting to 40 becoming light after
 midnight. Temperature steady near 7.
Monday..Cloudy. A few showers beginning in the morning. Risk of a
 thunderstorm late in the morning and in the afternoon. Amount 5 to
 10 mm. Wind becoming south 40 km/h gusting to 60 in the morning.
 High 18. UV index 3 or moderate.
Monday night..A few showers ending near midnight then partly cloudy
 with 40 percent chance of showers. Amount 5 mm. Wind southwest
 40 km/h gusting to 60 becoming light in the evening. Low 6.

Fenelon Falls - Balsam Lake Park - Northern Kawartha Lakes
Apsley - Woodview - Northern Peterborough County
Kaladar - Bannockburn - Bon Echo Park.
Tonight..Showers ending near midnight then mainly cloudy with
 60 percent chance of showers. Risk of a thunderstorm this evening.
 Amount 10 to 20 mm. Wind east 20 km/h gusting to 40 becoming light
 after midnight. Temperature rising to 12 by morning.
Monday..Cloudy. 60 percent chance of showers early in the morning. A
 few showers beginning in the morning. Risk of a thunderstorm late in
 the morning and in the afternoon. Amount 10 mm. Wind becoming south
 30 km/h gusting to 50 in the morning. High 17. UV index 3 or
 moderate.
Monday night..A few showers ending near midnight then partly cloudy.
 Risk of a thunderstorm early in the evening. Amount 5 to 10 mm. Wind
 southwest 30 km/h gusting to 50 becoming light in the evening. Low
 plus 5.

Stirling - Tweed - South Frontenac.
Tonight..Mainly cloudy. A few showers beginning early this evening
 and ending near midnight. Risk of a thunderstorm this evening.
 Amount 10 mm. Wind northeast 20 km/h gusting to 40 becoming
 southeast 20 after midnight. Temperature rising to 13 by morning.
Monday..Mainly cloudy. A few showers beginning late in the morning.
 Risk of a thunderstorm in the afternoon. Amount 10 mm. Wind
 southeast 30 km/h. High 19. UV index 3 or moderate.
Monday night..A few showers ending near midnight then mainly cloudy
 with 60 percent chance of showers. Risk of a thunderstorm early in
 the evening. Amount 10 to 15 mm. Low 8.

Bancroft - Hastings Highlands - Denbigh
Renfrew - Pembroke - Barry's Bay.
Tonight..Rain at times heavy. Amount 20 to 30 mm. Temperature steady
 near plus 4.
Monday..Periods of rain with risk of a thunderstorm. Amount 10 to
 20 mm. Wind becoming southeast 20 km/h in the afternoon. High 16.
Monday night..A few showers ending after midnight then partly cloudy.
 Amount 10 to 15 mm. Wind southeast 20 km/h becoming light in the
 evening. Low plus 5.

Brockville - Leeds and Grenville.
Tonight..Cloudy. Showers beginning early this evening and ending
 before morning. Amount 5 mm. Wind east 20 km/h gusting to 40.
 Temperature rising to 9 by morning.
Monday..Mainly cloudy. A few showers beginning in the afternoon. Risk
 of a thunderstorm in the afternoon. Amount 10 mm. Wind becoming
 southeast 20 km/h gusting to 40 near noon. High 22. Humidex 29. UV
 index 6 or high.
Monday night..A few showers ending after midnight then partly cloudy.
 Risk of a thunderstorm early in the evening. Amount 15 to 25 mm.
 Wind southeast 20 km/h gusting to 40 becoming light in the evening.
 Low 10.

City of Ottawa
Gatineau
Prescott and Russell
Cornwall - Morrisburg.
Tonight..Periods of rain. Amount 15 to 25 mm. Wind east 20 km/h
 gusting to 40. Temperature rising to 9 by morning.
Monday..Mainly cloudy with 40 percent chance of showers. Showers
 beginning late in the afternoon. Risk of a thunderstorm late in the
 afternoon. Amount 10 mm. Wind becoming southeast 20 km/h gusting to
 40 near noon. High 22. Humidex 29. UV index 6 or high.
Monday night..Showers ending before morning then partly cloudy. Risk
 of a thunderstorm early in the evening. Amount 20 to 30 mm. Wind
 southeast 20 km/h gusting to 40 becoming light early in the evening.
 Low 11.

Smiths Falls - Lanark - Sharbot Lake.
Tonight..Showers ending near midnight then cloudy with 60 percent
 chance of showers. Amount 10 to 20 mm. Wind east 20 km/h gusting to
 40. Temperature rising to 10 by morning.
Monday..Mainly cloudy. A few showers beginning early in the
 afternoon. Risk of a thunderstorm in the afternoon. Amount 10 mm.
 Wind becoming southeast 20 km/h gusting to 40 near noon. High 20.
 Humidex 26. UV index 6 or high.
Monday night..A few showers ending after midnight then partly cloudy.
 Risk of a thunderstorm early in the evening. Amount 10 to 15 mm.
 Wind southeast 20 km/h gusting to 40 becoming light in the evening.
 Low 9.

Port Carling - Port Severn
Town of Parry Sound - Rosseau - Killbear Park
Bayfield Inlet - Dunchurch.
Rainfall warning in effect.
Tonight..Rain at times heavy. Amount 20 to 30 mm. Wind east 20 km/h
 gusting to 40 becoming light near midnight. Temperature steady near
 plus 4.
Monday..Rain with risk of a thunderstorm. Amount 5 to 10 mm. Wind
 becoming south 20 km/h late in the morning. High 16.
Monday night..Rain ending in the evening then cloudy. A few showers
 beginning after midnight. Wind south 20 km/h becoming light in the
 evening. Low 6.

Bracebridge - Gravenhurst
Haliburton - Minden - Southern Haliburton County.
Tonight..Rain at times heavy ending before morning then cloudy. Risk
 of a thunderstorm early this evening. Amount 20 to 30 mm. Wind east
 20 km/h gusting to 40 becoming light near midnight. Temperature
 rising to 10 by morning.
Monday..Cloudy. Rain beginning in the morning. Risk of a
 thunderstorm. Amount 10 to 15 mm. Wind becoming south 20 km/h late
 in the morning. High 16.
Monday night..Rain ending in the evening then mainly cloudy.
 60 percent chance of showers overnight. Risk of a thunderstorm early
 in the evening. Wind south 20 km/h becoming light early in the
 evening. Low 6.

Huntsville - Baysville
Oxtongue Lake - Fort Irwin - Northern Haliburton County
Algonquin
South River - Burk's Falls.
Rainfall warning in effect.
Tonight..Rain at times heavy. Amount 20 to 30 mm. Temperature rising
 to 8 by morning.
Monday..Rain with risk of a thunderstorm. Amount 10 to 20 mm. Wind
 becoming southeast 20 km/h in the afternoon. High 16.
Monday night..Rain ending in the evening then mainly cloudy. A few
 showers beginning after midnight. Wind southeast 20 km/h becoming
 light in the evening. Low 6.

End
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