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Lake Simcoe: Past 24 Hour Conditions

Warnings

 

Oshawa Executive Airport

05:00 PM EDT 18 May 2026
Disclaimer

This table is a summary of hourly weather conditions for the past 24 hours.
Please note that these observations might not always be representative of weather conditions over their associated marine area.
Date / Time
(EDT)		 Wind(knots) Conditions Visibility(km) Pressure(kPa) Air temp(°C) Relative humidity(%) Dew point(°C) Humidex
18 May 2026
17:00 SSW 14 gusts 21 Sunny 16 101.3 27 45 14 30
16:00 SSW 13 gusts 18 Sunny 16 101.4 25 53 15 29
15:00 S 11 gusts 17 Sunny 16 101.5 26 54 16 31
14:00 SSW 13 gusts 18 Sunny 16 101.5 27 53 17 32
13:00 SSW 10 gusts 16 Sunny 16 101.6 26 56 16 30
12:00 S 8 Sunny 16 101.6 24 59 16 29
11:00 SSW 7 Sunny 16 101.7 22 64 15 27
10:00 S 6 Sunny 16 101.7 21 70 15 25
9:00 SSE 5 Mainly Sunny 16 101.7 20 75 15 *
8:00 SE 5 Sunny 16 101.7 18 80 15 *
7:00 ESE 4 Sunny 13 101.7 17 87 14 *
6:00 ESE 4 Partly Cloudy 13 101.7 15 94 15 *
5:00 ESE 4 Cloudy 16 101.6 16 89 15 *
4:00 ESE 7 Cloudy 16 101.6 18 83 15 *
3:00 ENE 4 Cloudy 16 101.6 18 78 14 *
2:00 E 5 Cloudy 16 101.6 17 78 14 *
1:00 ENE 5 Thunderstorm 16 101.7 17 77 13 *
0:00 E 6 Mostly Cloudy 16 101.7 16 80 13 *
17 May 2026
23:00 E 7 Cloudy 15 101.7 16 81 13 *
22:00 ESE 4 Cloudy 16 101.7 18 79 14 *
21:00 ESE 3 Mostly Cloudy 16 101.7 20 75 16 25
20:00 SE 4 Sunny 16 101.6 23 67 16 27
19:00 S 4 Sunny 16 101.6 25 58 17 30
18:00 S 4 Sunny 16 101.6 25 61 17 30
17:00 S 9 Mostly Cloudy 16 101.6 25 60 17 30

If you require additional historical weather information, please visit Climate Data Online

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Map of Great Lakes - Lake Erie and Lake Ontario marine weather areas CFB Trenton Port Colborne - 45142 Hamilton Munro Int'l Airport Oshawa Executive Airport Port Stanley - 45132 Lake Nipissing - 45152 Point Petre Georgian Bay - 45137 Toronto City Centre Airport Lake Simcoe - 45151 South Georgian Bay - 45143 Prince Edward Point - 45135 Peterborough Municipal Airport South Lake Huron - 45149 Collingwood Lake St Clair - 45147 Grimsby - 45139 Goderich Lagoon City Kingston Airport Muskoka Airport Parry Sound Harbour Grenadier Island Lake Simcoe Regional Airport Wiarton Airport Brockville Western Islands Cove Island Great Duck Island North Channel - 45154 Sarnia Chris Hadfield Airport Gore Bay-Manitoulin Airport Tobermory Harrow AAFC Long Point North Bay Airport Port Weller St. Catharines / Niagara District Airport Greater Sudbury Airport Southeast Shoal Vineland Station Port Colborne Erieau Cobourg Sault Ste. Marie Airport Windsor Airport Welland-Pelham Killarney Ajax - 45159 Point Pelee Burlington Lift Bridge
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