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Cornwall to Montréal: Past 24 Hour Conditions

Warnings

 

Grenadier Island

01:00 AM EDT 22 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)
22 May 2026
1:00 NNW 1 N/A N/A 102.9 8 75 4
0:00 NNE 2 N/A N/A 102.8 9 59 2
21 May 2026
23:00 NNE 1 N/A N/A 102.8 9 56 1
22:00 NE 1 N/A N/A 102.8 10 52 1
21:00 calm N/A N/A 102.7 11 47 0
20:00 NNE 1 N/A N/A 102.7 12 40 -1
19:00 NNE 2 N/A N/A 102.7 15 36 -1
18:00 NNE 3 N/A N/A 102.6 16 33 -1
17:00 NE 4 N/A N/A 102.6 15 36 0
16:00 ENE 6 N/A N/A 102.7 13 35 -2
15:00 E 2 N/A N/A 102.7 14 42 1
14:00 ESE 3 N/A N/A 102.8 13 45 1
13:00 E 4 N/A N/A 102.8 11 46 0
12:00 NE 5 N/A N/A 102.8 10 48 0
11:00 ENE 6 N/A N/A 102.8 10 47 -1
10:00 NE 5 N/A N/A 102.8 10 52 0
9:00 ENE 6 N/A N/A 102.8 8 53 -1
8:00 NNE 2 N/A N/A 102.8 8 56 0
7:00 NNE 5 N/A N/A 102.7 7 59 0
6:00 NNE 4 N/A N/A 102.6 7 58 -1
5:00 NNE 5 N/A N/A 102.5 8 57 0
4:00 NE 7 N/A N/A 102.4 9 55 1
3:00 NNE 4 N/A N/A 102.3 10 55 2
2:00 NNE 5 N/A N/A 102.3 11 54 2
1:00 NNE 3 N/A N/A 102.2 13 49 2

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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