Forecasts for Southern Ontario and the National Capital Region
Choose a Province or Territory
* NOTE: Corrected and/or amended bulletins are listed first *
FPCN11 CWTO 260222 AAA Updated forecasts for Southern Ontario and the National Capital Region issued by Environment Canada at 10:22 p.m. EDT Monday 25 September 2017 for tonight Tuesday and Tuesday night. The next scheduled forecast will be issued at 5:00 a.m. EDT Tuesday. Pickering - Oshawa - Southern Durham Region Belleville - Quinte - Northumberland Napanee - Consecon Kingston - Odessa - Frontenac Islands. Heat warning in effect. Tonight..A few clouds. Fog patches. Low 17. Tuesday..Mainly sunny. Fog patches dissipating in the morning. High 30. Humidex 39. UV index 6 or high. Tuesday night..A few clouds. Fog patches overnight. Low 18. Peterborough - Kawartha Lakes Stirling - Tweed - South Frontenac Kaladar - Bannockburn - Bon Echo Park. Heat warning in effect. Tonight..A few clouds. Fog patches. Low 15. Tuesday..Mainly sunny. Fog patches dissipating in the morning. High 31. Humidex 39. UV index 6 or high. Tuesday night..A few clouds. Fog patches overnight. Low 15. Remainder unchanged. End $$$$^^ FPCN11 CWTO 251930 Forecasts for Southern Ontario and the National Capital Region issued by Environment Canada at 3:30 p.m. EDT Monday 25 September 2017 for tonight Tuesday and Tuesday night. The next scheduled forecast will be issued at 5:00 a.m. EDT Tuesday. City of Toronto. Heat warning in effect. Tonight..A few clouds. Low 21. Tuesday..Mainly sunny. High 31. Humidex 39. UV index 6 or high. Tuesday night..A few clouds. Low 20. Windsor - Essex - Chatham-Kent. Heat warning in effect. Tonight..A few clouds. Fog patches developing overnight. Low 17. Tuesday..Mainly sunny. Fog patches dissipating in the morning. High 31. Humidex 41. UV index 6 or high. Tuesday night..A few clouds. Low 18. Sarnia - Lambton Elgin London - Middlesex. Heat warning in effect. Tonight..A few clouds. Low 16. Tuesday..Mainly sunny. High 31. Humidex 39. UV index 6 or high. Tuesday night..A few clouds. Low 18. Simcoe - Delhi - Norfolk Dunnville - Caledonia - Haldimand Niagara City of Hamilton. Heat warning in effect. Tonight..A few clouds. Fog patches developing overnight. Low 18. Tuesday..Mainly sunny. Fog patches dissipating in the morning. High 31. Humidex 40. UV index 6 or high. Tuesday night..A few clouds. Low 19. Oxford - Brant Stratford - Mitchell - Southern Perth County Listowel - Milverton - Northern Perth County Waterloo - Wellington. Heat warning in effect. Tonight..A few clouds. Fog patches developing overnight. Low 16. Tuesday..Sunny. Becoming a mix of sun and cloud in the afternoon. Fog patches dissipating in the morning. High 31. Humidex 39. UV index 6 or high. Tuesday night..A few clouds. Low 17. Burlington - Oakville Halton Hills - Milton Mississauga - Brampton Vaughan - Richmond Hill - Markham. Heat warning in effect. Tonight..A few clouds. Low 18. Tuesday..Mainly sunny. High 32. Humidex 40. UV index 6 or high. Tuesday night..A few clouds. Low 17. Caledon Newmarket - Georgina - Northern York Region Uxbridge - Beaverton - Northern Durham Region Dufferin - Innisfil. Heat warning in effect. Tonight..A few clouds. Fog patches developing overnight. Low 16. Tuesday..Sunny. Becoming a mix of sun and cloud in the afternoon. Fog patches dissipating in the morning. High 32. Humidex 40. UV index 6 or high. Tuesday night..A few clouds. Fog patches overnight. Low 16. Pickering - Oshawa - Southern Durham Region Belleville - Quinte - Northumberland Napanee - Consecon Kingston - Odessa - Frontenac Islands. Heat warning in effect. Tonight..A few clouds. Fog patches developing overnight. Low 17. Tuesday..Mainly sunny. Fog patches dissipating in the morning. High 30. Humidex 39. UV index 6 or high. Tuesday night..A few clouds. Fog patches overnight. Low 18. Goderich - Bluewater - Southern Huron County Wingham - Blyth - Northern Huron County Saugeen Shores - Kincardine - Southern Bruce County Hanover - Dundalk - Southern Grey County Owen Sound - Blue Mountains - Northern Grey County. Tonight..A few clouds. Fog patches developing overnight. Low 17. Tuesday..Sunny. Becoming a mix of sun and cloud in the afternoon. Fog patches dissipating in the morning. High 30. Humidex 38. UV index 6 or high. Tuesday night..A few clouds. Low 17. Bruce Peninsula - Sauble Beach - Tobermory. Tonight..A few clouds. Low 18. Tuesday..Mainly sunny. High 29. Humidex 37. UV index 6 or high. Tuesday night..A few clouds. Increasing cloudiness overnight. Low 17. Barrie - Orillia - Midland. Heat warning in effect. Tonight..A few clouds. Fog patches developing overnight. Low 16. Tuesday..Sunny. Becoming a mix of sun and cloud in the afternoon. Fog patches dissipating in the morning. High 31. Humidex 39. UV index 6 or high. Tuesday night..A few clouds. Increasing cloudiness before morning. Fog patches overnight. Low 17. Picton - Sandbanks Park. Tonight..A few clouds. Low 19. Tuesday..Mainly sunny. High 27. Humidex 35. UV index 6 or high. Tuesday night..A few clouds. Low 18. Peterborough - Kawartha Lakes Stirling - Tweed - South Frontenac Kaladar - Bannockburn - Bon Echo Park. Heat warning in effect. Tonight..A few clouds. Fog patches developing overnight. Low 15. Tuesday..Mainly sunny. Fog patches dissipating in the morning. High 31. Humidex 39. UV index 5 or moderate. Tuesday night..A few clouds. Fog patches overnight. Low 15. Bancroft - Hastings Highlands - Denbigh Renfrew - Pembroke - Barry's Bay. Heat warning in effect. Tonight..A few clouds. Fog patches developing overnight. Low 16. Tuesday..Mainly sunny. Fog patches dissipating in the morning. High 30. Humidex 39. UV index 5 or moderate. Tuesday night..A few clouds. Increasing cloudiness overnight. Fog patches overnight. Low 14. Brockville - Leeds and Grenville City of Ottawa Gatineau Prescott and Russell Cornwall - Morrisburg Smiths Falls - Lanark - Sharbot Lake. Heat warning in effect. Tonight..A few clouds. Fog patches developing overnight. Low 17. Tuesday..Mainly sunny. Fog patches dissipating in the morning. High 31. Humidex 40. UV index 5 or moderate. Tuesday night..A few clouds. Fog patches overnight. Low 17. Parry Sound - Muskoka Haliburton Algonquin Burk's Falls - Bayfield Inlet. Tonight..A few clouds. Fog patches developing overnight. Low 16. Tuesday..A mix of sun and cloud. Fog patches dissipating in the morning. High 29. Humidex 35. UV index 6 or high. Tuesday night..A few clouds. Increasing cloudiness overnight. Fog patches overnight. Low 14. End $$$$^^