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

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St. Catharines / Niagara District Airport

08:00 AM EDT 19 July 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
19 July 2026
8:00 NNE 9 Mostly Cloudy 19 101.5 19 77 14 *
7:00 NNW 4 Mostly Cloudy 19 101.4 18 81 15 *
6:00 N 5 N/A N/A 101.3 18 76 14 *
5:00 NW 5 N/A N/A 101.2 18 77 14 *
4:00 NNW 5 N/A N/A 101.2 18 73 13 *
3:00 N 8 N/A N/A 101.2 19 70 13 *
2:00 N 11 N/A N/A 101.1 19 68 13 *
1:00 N 11 N/A N/A 101.1 20 66 13 *
0:00 NNW 10 N/A N/A 101.0 20 77 16 25
18 July 2026
23:00 NW 9 gusts 17 N/A N/A 100.9 21 74 16 26
22:00 NW 12 gusts 21 N/A N/A 100.8 22 71 16 27
21:00 WNW 11 Smoke 5 100.7 22 80 18 28
20:00 WNW 12 gusts 24 Smoke 5 100.5 23 75 18 29
19:00 WNW 13 gusts 25 Smoke 8 100.4 24 72 19 31
18:00 WNW 12 gusts 20 Smoke 8 100.4 25 74 20 32
17:00 WNW 11 gusts 18 Mostly Cloudy 16 100.3 25 86 22 34
16:00 SW 5 Mostly Cloudy 16 100.3 23 95 22 32
15:00 SSE 8 Light Rainshower 16 100.3 22 94 21 31
14:00 NE 9 gusts 15 Mostly Cloudy 16 100.2 27 73 21 35
13:00 E 7 Mostly Cloudy 13 100.3 25 78 20 32
12:00 NNW 6 Smoke 4 100.5 25 88 23 35
11:00 NW 6 gusts 19 Smoke 8 100.6 25 83 22 35
10:00 SW 13 gusts 19 Smoke 6 100.6 27 79 23 37
9:00 SW 14 gusts 19 Smoke 4 100.7 26 79 22 35
8:00 SW 13 Smoke 4 100.7 24 80 21 32

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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