St. Thomas, ON 14 Day Weather - WeatherWorld.com
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St. Thomas, ON Weather Forecast


St. Thomas, ON Weather Forecast Dated: 338 AM Sat Sep 26 2026
Expect a cool pattern with a mix of sun and clouds and occasional showers over the coming period. generally humid conditions and no major pressure swings will dominate.
Saturday, September 26, 2026
Mid-Morning
13°C 55°F
Partly Cloudy
Mid-Afternoon
22°C 72°F
Sunny
Early-Evening
18°C 64°F
Partly Cloudy
Pleasant near 22°C 72°F, partly cloudy in the morning, becoming sunny through the afternoon and evening, with steady humidity and barometric pressure falling. Winds turning from the NE to the NNE at 12 km/h 7 mph.
Sunday, September 27, 2026
Mid-Morning
14°C 57°F
Sunny
Mid-Afternoon
23°C 74°F
Sunny
Early-Evening
19°C 66°F
Sunny
Comfortable with temperatures reaching 23°C 74°F, sunny throughout the day, with steady humidity and steady pressure. Winds blowing from the NE at 19 km/h 12 mph.
Monday, September 28, 2026
Mid-Morning
13°C 55°F
Sunny
Mid-Afternoon
21°C 70°F
Overcast
Early-Evening
19°C 65°F
Overcast
Enjoyable around 21°C 70°F, sunny in the morning, becoming overcast through the afternoon and evening, with steady humidity and steady pressure. Winds moving from the NE to the E at 5 km/h 3 mph.
Tuesday, September 29, 2026
Mid-Morning
15°C 59°F
Overcast
Mid-Afternoon
22°C 71°F
Sunny
Early-Evening
18°C 65°F
Cloudy
Mild temperatures up to 22°C 71°F, overcast in the morning, sunny in the afternoon, and cloudy this evening, with steady humidity and steady pressure. Winds swinging from the WSW to the SSW at 13 km/h 8 mph.
Wednesday, September 30, 2026
Mid-Morning
14°C 57°F
Rain
Mid-Afternoon
16°C 61°F
Scattered Showers
Early-Evening
15°C 59°F
Scattered Showers
Refreshing around 16°C 61°F, scattered downpours possible, with steady humidity and barometric pressure rising. Winds blowing from the WSW at 11 km/h 7 mph.
Thursday, October 1, 2026
Mid-Morning
16°C 60°F
Overcast
Mid-Afternoon
19°C 66°F
Overcast
Early-Evening
22°C 71°F
Overcast
Mildly cool near 19°C 66°F, overcast throughout the day, with lower humidity and steady pressure. Winds turning from the SE to the SSW at 21 km/h 13 mph. Gusts up to 49 km/h 30 mph.
Friday, October 2, 2026
Mid-Morning
21°C 69°F
Overcast
Mid-Afternoon
18°C 64°F
Light Rain
Early-Evening
16°C 61°F
Light Rain
Comfortable at 18°C 64°F, drier morning followed by showers lasting through evening, with increasing humidity and steady pressure. Winds out of the WSW at 21 km/h 13 mph.
Saturday, October 3, 2026
Mid-Morning
13°C 56°F
Overcast
Mid-Afternoon
19°C 66°F
Overcast
Early-Evening
20°C 67°F
Overcast
Cool with a high near 19°C 66°F, overcast throughout the day, with steady humidity and barometric pressure falling. Winds moving from the E to the SE at 17 km/h 11 mph. Gusts up to 33 km/h 20 mph.
Sunday, October 4, 2026
Mid-Morning
18°C 64°F
Light Showers
Mid-Afternoon
14°C 58°F
Sunny
Early-Evening
12°C 54°F
Sunny
Refreshing around 14°C 58°F, morning showers, giving way to clearing skies, with lower humidity and barometric pressure rising. Winds swinging from the SSW to the NNW at 24 km/h 15 mph. Gusts up to 42 km/h 26 mph.
Monday, October 5, 2026
Mid-Morning
10°C 49°F
Scattered Showers
Mid-Afternoon
11°C 52°F
Overcast
Early-Evening
9°C 48°F
Scattered Showers
Cool and brisk at 11°C 52°F, periods of heavy rain and gusty conditions, with increasing humidity and steady pressure. Winds out of the WNW at 23 km/h 14 mph.
Tuesday, October 6, 2026
Mid-Morning
3°C 37°F
Light Sleet Showers
Mid-Afternoon
7°C 44°F
Scattered Showers
Early-Evening
6°C 43°F
Scattered Showers
Biting cold near 7°C 44°F, locally heavy sleet at times, with lower humidity and steady pressure. Winds turning from the WNW to the N at 14 km/h 9 mph.
Wednesday, October 7, 2026
Mid-Morning
2°C 36°F
Scattered Showers
Mid-Afternoon
6°C 44°F
Light Showers
Early-Evening
4°C 39°F
Light Showers
Cold with a high near 6°C 44°F, locally heavy downpours at times, with lower humidity and steady pressure. Winds increasing from the SW at 1 km/h 1 mph to N at 17 km/h 11 mph.
Thursday, October 8, 2026
Mid-Morning
2°C 35°F
Sunny
Mid-Afternoon
8°C 46°F
Sunny
Early-Evening
5°C 42°F
Sunny
Brisk around 8°C 46°F, sunny in the morning, cloudy in the afternoon, and partly cloudy this evening, with lower humidity and steady pressure. Winds moving from the NNW to the W at 9 km/h 6 mph.
Friday, October 9, 2026
Mid-Morning
6°C 42°F
Scattered Showers
Mid-Afternoon
7°C 45°F
Scattered Showers
Early-Evening
7°C 45°F
Scattered Showers
Cool and brisk at 7°C 45°F, scattered downpours possible, with increasing humidity and steady pressure. Winds swinging from the SW to the WNW at 17 km/h 11 mph.
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