Weather for the next 7 days in St. Thomas, an urban area in Ontario, Canada.

Weather in St. Thomas for today, Tuesday, 17 Mar 2026

Sunrise: 07:34
Sunset: 19:34
Moonrise: 06:54
Moonset: 18:14
UV Index: 0		02:0005:0008:0011:0014:0017:0020:0023:00
Overcast Overcast Overcast Overcast Overcast Overcast Partly Cloudy Clear
Temperature-9°C-9°C-8°C-6°C-5°C-4°C-5°C-6°C
Feels Like-20°C-19°C-18°C-15°C-12°C-11°C-11°C-11°C
Precipitation0 mm0 mm0 mm0 mm0 mm0 mm0 mm0 mm
Probability0 %0 %0 %0 %0 %0 %0 %0 %
Cloud Cover100 %100 %98 %100 %95 %93 %51 %21 %
Wind Speed42 km/h39 km/h32 km/h35 km/h33 km/h32 km/h24 km/h21 km/h
Wind DirectionWWWNWWNWWNWWWW
Wind Gusts51 km/h47 km/h39 km/h40 km/h38 km/h36 km/h34 km/h30 km/h
Humidity72 %74 %71 %62 %52 %53 %51 %52 %
Dew Point-14°C-13°C-13°C-13°C-13°C-12°C-14°C-15°C
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Weather in St. Thomas for tomorrow, Wednesday, 18 Mar 2026

Sunrise: 07:32
Sunset: 19:35
Moonrise: 07:15
Moonset: 19:28
UV Index: 1		02:0005:0008:0011:0014:0017:0020:0023:00
Partly Cloudy Overcast Overcast Overcast Overcast Overcast Overcast Clear
Temperature-6°C-4°C-3°C-1°C-1°C-1°C-1°C-2°C
Feels Like-10°C-10°C-9°C-8°C-7°C-7°C-7°C-7°C
Precipitation0 mm0 mm0 mm0 mm0 mm0 mm0 mm0 mm
Probability0 %0 %0 %0 %0 %0 %0 %0 %
Cloud Cover39 %100 %100 %100 %100 %100 %100 %1 %
Wind Speed19 km/h9 km/h8 km/h18 km/h22 km/h23 km/h17 km/h15 km/h
Wind DirectionWWSSWSSSSESSE
Wind Gusts27 km/h14 km/h11 km/h21 km/h26 km/h27 km/h24 km/h22 km/h
Humidity72 %68 %74 %51 %64 %86 %92 %63 %
Dew Point-11°C-10°C-7°C-10°C-6°C-3°C-3°C-12°C
000102030405060708091011121314151617181920212223

Weather in St. Thomas for Thursday, 19 Mar 2026

Sunrise: 07:30
Sunset: 19:37
Moonrise: 07:36
Moonset: 20:42
UV Index: 1		02:0005:0008:0011:0014:0017:0020:0023:00
MistModerate snowFogPatchy rain nearbyPatchy rain nearbyOvercast Light freezing rainOvercast
Temperature-1°C0°C0°C2°C4°C4°C1°C1°C
Feels Like-4°C-3°C-2°C0°C1°C1°C-1°C-3°C
Precipitation0 mm0.2 mm0 mm0 mm0 mm0 mm0 mm0 mm
Probability0 %100 %61 %68 %73 %0 %67 %0 %
Cloud Cover100 %100 %100 %100 %100 %96 %100 %100 %
Wind Speed13 km/h10 km/h5 km/h5 km/h11 km/h12 km/h5 km/h5 km/h
Wind DirectionSSWWSWWWNWWWNWNESE
Wind Gusts19 km/h15 km/h8 km/h7 km/h13 km/h17 km/h9 km/h9 km/h
Humidity96 %97 %99 %93 %72 %72 %87 %93 %
Dew Point-1°C0°C0°C1°C0°C0°C-1°C-2°C
000102030405060708091011121314151617181920212223

Weather in St. Thomas for Friday, 20 Mar 2026

Sunrise: 07:28
Sunset: 19:38
Moonrise: 07:58
Moonset: 22:00
UV Index: 1		02:0005:0008:0011:0014:0017:0020:0023:00
Clear MistPartly Cloudy Overcast Partly Cloudy Patchy rain nearbyPatchy rain nearbyPatchy rain nearby
Temperature1°C1°C2°C4°C6°C9°C9°C7°C
Feels Like-2°C-2°C-1°C1°C2°C6°C6°C3°C
Precipitation0 mm0 mm0 mm0 mm0 mm0 mm0 mm0 mm
Probability0 %0 %0 %0 %0 %59 %58 %50 %
Cloud Cover24 %46 %35 %100 %42 %100 %84 %100 %
Wind Speed6 km/h9 km/h13 km/h21 km/h21 km/h30 km/h28 km/h17 km/h
Wind DirectionSSWSSWSSSSWSWWSWNNW
Wind Gusts12 km/h18 km/h24 km/h27 km/h30 km/h43 km/h51 km/h26 km/h
Humidity92 %96 %95 %81 %87 %78 %80 %96 %
Dew Point-2°C-1°C-1°C1°C3°C6°C7°C6°C
000102030405060708091011121314151617181920212223

Weather in St. Thomas for Saturday, 21 Mar 2026

Sunrise: 07:27
Sunset: 19:39
Moonrise: 08:24
Moonset: 23:20
UV Index: 2		02:0005:0008:0011:0014:0017:0020:0023:00
Overcast FogMistOvercast Overcast Partly Cloudy Clear Cloudy
Temperature4°C3°C3°C5°C8°C9°C6°C4°C
Feels Like1°C0°C1°C4°C7°C7°C3°C2°C
Precipitation0 mm0 mm0 mm0 mm0 mm0 mm0 mm0 mm
Probability0 %0 %0 %0 %0 %0 %0 %0 %
Cloud Cover100 %100 %100 %100 %94 %33 %19 %80 %
Wind Speed14 km/h8 km/h7 km/h4 km/h7 km/h13 km/h10 km/h9 km/h
Wind DirectionNWNNNENNEWSWWNWNNWNNE
Wind Gusts21 km/h11 km/h10 km/h5 km/h8 km/h15 km/h15 km/h16 km/h
Humidity97 %97 %96 %83 %70 %65 %85 %88 %
Dew Point4°C2°C2°C2°C3°C4°C3°C2°C
000102030405060708091011121314151617181920212223

Weather in St. Thomas for Sunday, 22 Mar 2026

Sunrise: 07:25
Sunset: 19:40
Moonrise: 08:55
Moonset: 19:00
UV Index: 1		02:0005:0008:0011:0014:0017:0020:0023:00
Partly Cloudy Partly Cloudy MistOvercast Overcast Overcast Light drizzlePatchy rain nearby
Temperature4°C3°C3°C6°C7°C6°C2°C1°C
Feels Like2°C1°C0°C2°C4°C1°C-4°C-5°C
Precipitation0 mm0 mm0 mm0 mm0 mm0 mm0.3 mm0 mm
Probability0 %0 %0 %0 %0 %0 %100 %70 %
Cloud Cover38 %28 %100 %97 %92 %100 %100 %100 %
Wind Speed7 km/h8 km/h10 km/h17 km/h22 km/h27 km/h31 km/h32 km/h
Wind DirectionNEEESEESEEEENEENE
Wind Gusts11 km/h15 km/h17 km/h20 km/h25 km/h31 km/h39 km/h41 km/h
Humidity84 %93 %94 %83 %75 %77 %88 %88 %
Dew Point2°C1°C2°C3°C3°C2°C0°C-1°C
000102030405060708091011121314151617181920212223

Weather in St. Thomas for Monday, 23 Mar 2026

Sunrise: 07:23
Sunset: 19:41
Moonrise: 09:34
Moonset: 00:40
UV Index: 1		02:0005:0008:0011:0014:0017:0020:0023:00
Overcast Light freezing rainLight snowOvercast Overcast Overcast Clear Overcast
Temperature0°C-1°C-1°C1°C3°C2°C-1°C-2°C
Feels Like-6°C-7°C-7°C-5°C-2°C-3°C-5°C-7°C
Precipitation0 mm0 mm0 mm0 mm0 mm0 mm0 mm0 mm
Probability0 %72 %67 %0 %0 %0 %0 %0 %
Cloud Cover100 %100 %100 %92 %100 %100 %7 %89 %
Wind Speed26 km/h22 km/h22 km/h26 km/h19 km/h18 km/h15 km/h13 km/h
Wind DirectionENENENENENEENEEE
Wind Gusts33 km/h28 km/h27 km/h29 km/h22 km/h22 km/h22 km/h18 km/h
Humidity87 %81 %81 %61 %55 %59 %72 %75 %
Dew Point-2°C-4°C-4°C-6°C-5°C-5°C-5°C-6°C
000102030405060708091011121314151617181920212223

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