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Lake Simcoe: Past 24 Hour Conditions

Warnings

 

Grenadier Island

01:00 PM EDT 13 March 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) Wind Chill
13 March 2026
13:00 S 5 N/A N/A 101.3 0 62 -7 -3
12:00 SSW 8 N/A N/A 101.5 -1 65 -7 -6
11:00 SSW 5 N/A N/A 101.5 -2 66 -7 -5
10:00 S 5 N/A N/A 101.6 -2 68 -7 -6
9:00 S 5 N/A N/A 101.7 -3 80 -6 -7
8:00 SSW 3 N/A N/A 101.6 -4 89 -5 -6
7:00 W 1 N/A N/A 101.7 -4 82 -7 -5
6:00 WSW 1 N/A N/A 101.7 -4 81 -7 -5
5:00 calm N/A N/A 101.7 -4 81 -7 *
4:00 NNW 1 N/A N/A 101.7 -4 77 -7 -4
3:00 calm N/A N/A 101.7 -3 79 -6 *
2:00 calm N/A N/A 101.7 -4 82 -6 *
1:00 N 1 N/A N/A 101.7 -3 79 -6 -4
0:00 NE 2 N/A N/A 101.7 -3 78 -6 -4
12 March 2026
23:00 NE 4 N/A N/A 101.6 -3 78 -6 -6
22:00 NE 5 N/A N/A 101.6 -2 79 -5 -6
21:00 N 2 N/A N/A 101.5 -1 77 -5 -2
20:00 NW 2 N/A N/A 101.4 0 65 -6 -2
19:00 WNW 1 N/A N/A 101.3 -1 66 -6 -1
18:00 W 3 N/A N/A 101.2 0 63 -6 -2
17:00 WNW 4 N/A N/A 101.2 0 60 -7 -3
16:00 NW 2 N/A N/A 101.1 1 57 -7 *
15:00 NW 2 N/A N/A 101.1 0 57 -8 -2
14:00 W 4 N/A N/A 101.1 -1 54 -9 -4
13:00 W 3 N/A N/A 101.2 -1 58 -9 -3

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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