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

Warnings

 

Brockville

09:00 PM EDT 20 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
20 May 2026
21:00 NNW 6 N/A N/A 102.0 15 45 3 *
20:00 N 6 N/A N/A 101.9 15 47 4 *
19:00 N 9 N/A N/A 101.8 17 46 5 *
18:00 SSW 5 N/A N/A 101.7 18 54 9 *
17:00 SW 9 N/A N/A 101.6 19 52 8 *
16:00 SW 9 N/A N/A 101.6 19 52 9 *
15:00 SSW 8 N/A N/A 101.6 20 51 9 *
14:00 SW 12 N/A N/A 101.5 21 55 11 22
13:00 WNW 9 N/A N/A 101.5 20 46 8 21
12:00 WSW 12 N/A N/A 101.4 21 48 9 22
11:00 W 8 gusts 15 N/A N/A 101.4 20 56 11 *
10:00 WSW 11 gusts 17 N/A N/A 101.4 19 60 11 *
9:00 W 12 N/A N/A 101.3 18 62 11 *
8:00 W 9 gusts 19 N/A N/A 101.2 19 71 14 *
7:00 SW 7 N/A N/A 101.2 18 95 17 *
6:00 SW 6 N/A N/A 101.1 18 95 17 *
5:00 SW 6 N/A N/A 101.0 18 92 17 *
4:00 SW 7 N/A N/A 101.0 19 90 17 *
3:00 SW 8 N/A N/A 101.0 19 90 17 *
2:00 SSW 8 N/A N/A 101.1 19 88 17 *
1:00 SSW 4 N/A N/A 101.1 20 96 19 *
0:00 SW 7 N/A N/A 101.1 20 93 19 27
19 May 2026
23:00 W 10 gusts 19 N/A N/A 101.1 21 83 18 28
22:00 SW 9 N/A N/A 101.1 23 71 17 29
21:00 SW 9 gusts 15 N/A N/A 101.0 24 69 18 29

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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