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Great Lakes - Lake Erie and Lake Ontario: Past 24 Hour Conditions

Warnings

 

Grenadier Island

12:00 AM EDT 15 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
15 March 2026
0:00 calm N/A N/A 102.8 -5 74 -9 *
14 March 2026
23:00 calm N/A N/A 102.8 -4 75 -8 *
22:00 NW 2 N/A N/A 102.7 -2 71 -7 -3
21:00 WNW 2 N/A N/A 102.5 -1 75 -5 -2
20:00 N/A N/A N/A N/A N/A N/A N/A *
19:00 WSW 2 N/A N/A 102.2 1 69 -4 *
18:00 W 2 N/A N/A 102.1 1 70 -4 *
17:00 W 4 N/A N/A 101.9 1 70 -4 *
16:00 W 5 N/A N/A 101.8 2 68 -3 *
15:00 WSW 3 N/A N/A 101.7 1 76 -3 *
14:00 W 5 N/A N/A 101.5 0 78 -3 *
13:00 W 4 N/A N/A 101.4 0 86 -2 -3
12:00 W 3 N/A N/A 101.2 0 90 -2 -2
11:00 WNW 4 N/A N/A 101.0 -1 91 -2 -4
10:00 WNW 1 N/A N/A 100.8 0 96 -1 -1
9:00 WSW 3 N/A N/A 100.5 0 97 0 *
8:00 SW 3 N/A N/A 100.4 0 92 -1 *
7:00 SW 5 N/A N/A 100.3 0 89 -1 *
6:00 SW 5 N/A N/A 100.2 0 89 -1 *
5:00 WSW 4 N/A N/A 100.1 1 91 -1 *
4:00 WSW 6 gusts 18 N/A N/A 100.1 1 94 0 *
3:00 WSW 9 gusts 18 N/A N/A 100.0 1 96 0 *
2:00 WSW 6 gusts 17 N/A N/A 100.0 1 95 0 *
1:00 SSW 9 N/A N/A 100.0 1 96 0 *
0:00 SSW 13 N/A N/A 100.0 1 97 0 *

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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