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

Weather in St. Thomas for today, Sunday, 16 Aug 2026

Sunrise: 06:32
Sunset: 20:25
Moonrise: 11:03
Moonset: 22:05
UV Index: 7
02:0005:0008:0011:0014:0017:0020:0023:00
Cloudy Partly Cloudy Overcast Patchy rain nearbyLight rain showerPatchy rain nearbyPartly Cloudy Cloudy
Temperature20°C20°C22°C23°C23°C25°C24°C20°C
Feels Like20°C20°C25°C25°C26°C27°C26°C20°C
Precipitation0 mm0 mm0 mm0.1 mm0.5 mm0.1 mm0 mm0 mm
Probability15 %11 %20 %39 %63 %24 %11 %28 %
Cloud Cover84 %47 %91 %100 %97 %88 %35 %77 %
Wind Speed10 km/h10 km/h10 km/h8 km/h10 km/h17 km/h13 km/h14 km/h
Wind DirectionESEESESESSEWNWWNWNWNNW
Wind Gusts18 km/h18 km/h13 km/h11 km/h14 km/h22 km/h19 km/h25 km/h
Humidity70 %73 %77 %91 %93 %77 %76 %97 %
Dew Point15°C15°C18°C21°C22°C21°C20°C19°C
000102030405060708091011121314151617181920212223

Weather in St. Thomas for tomorrow, Monday, 17 Aug 2026

Sunrise: 06:33
Sunset: 20:24
Moonrise: 12:11
Moonset: 22:27
UV Index: 8
02:0005:0008:0011:0014:0017:0020:0023:00
Clear FogSunnySunnySunnySunnySunnyClear
Temperature20°C15°C18°C24°C28°C26°C20°C15°C
Feels Like20°C15°C18°C25°C27°C26°C20°C15°C
Precipitation0 mm0 mm0 mm0 mm0 mm0 mm0 mm0 mm
Probability9 %42 %14 %1 %1 %1 %2 %5 %
Cloud Cover13 %100 %13 %6 %18 %4 %0 %4 %
Wind Speed18 km/h12 km/h14 km/h16 km/h22 km/h24 km/h16 km/h9 km/h
Wind DirectionNNWNNWNNWNNWNWNWNWN
Wind Gusts26 km/h25 km/h22 km/h18 km/h25 km/h28 km/h28 km/h20 km/h
Humidity78 %97 %90 %45 %33 %36 %49 %68 %
Dew Point16°C15°C16°C12°C10°C10°C9°C9°C
000102030405060708091011121314151617181920212223

Weather in St. Thomas for Tuesday, 18 Aug 2026

Sunrise: 06:34
Sunset: 20:22
Moonrise: 13:19
Moonset: 22:53
UV Index: 7
02:0005:0008:0011:0014:0017:0020:0023:00
Clear Clear SunnySunnySunnySunnySunnyPartly Cloudy
Temperature14°C13°C17°C25°C28°C28°C23°C19°C
Feels Like14°C13°C17°C25°C28°C28°C25°C19°C
Precipitation0 mm0 mm0 mm0 mm0 mm0 mm0 mm0 mm
Probability6 %7 %4 %1 %1 %1 %4 %12 %
Cloud Cover11 %10 %4 %2 %8 %9 %5 %25 %
Wind Speed6 km/h4 km/h3 km/h11 km/h20 km/h21 km/h19 km/h16 km/h
Wind DirectionNNNWSESWSSWSSSSW
Wind Gusts13 km/h8 km/h6 km/h13 km/h23 km/h24 km/h32 km/h34 km/h
Humidity68 %73 %60 %37 %36 %41 %60 %81 %
Dew Point8°C8°C9°C10°C12°C13°C14°C16°C
000102030405060708091011121314151617181920212223

Weather in St. Thomas for Wednesday, 19 Aug 2026

Sunrise: 06:35
Sunset: 20:21
Moonrise: 14:25
Moonset: 23:24
UV Index: 7
02:0005:0008:0011:0014:0017:0020:0023:00
Clear Patchy rain nearbyLight rain showerOvercast Partly Cloudy SunnySunnyClear
Temperature19°C21°C19°C18°C24°C26°C20°C15°C
Feels Like19°C21°C19°C18°C25°C26°C20°C15°C
Precipitation0 mm0 mm0.2 mm0 mm0 mm0 mm0 mm0 mm
Probability15 %20 %52 %31 %3 %1 %1 %2 %
Cloud Cover20 %76 %100 %100 %29 %3 %0 %2 %
Wind Speed14 km/h20 km/h15 km/h11 km/h10 km/h25 km/h15 km/h13 km/h
Wind DirectionSWSWWSWNNWNWNNWNNE
Wind Gusts30 km/h31 km/h23 km/h15 km/h12 km/h29 km/h28 km/h28 km/h
Humidity90 %81 %96 %92 %50 %37 %44 %53 %
Dew Point17°C17°C19°C17°C13°C10°C8°C6°C
000102030405060708091011121314151617181920212223

Weather in St. Thomas for Thursday, 20 Aug 2026

Sunrise: 06:36
Sunset: 20:19
Moonrise: 15:30
Moonset: 19:00
UV Index: 7
02:0005:0008:0011:0014:0017:0020:0023:00
Clear Clear SunnySunnyPartly Cloudy Partly Cloudy SunnyClear
Temperature13°C13°C16°C26°C29°C28°C21°C19°C
Feels Like13°C13°C16°C25°C27°C27°C21°C19°C
Precipitation0 mm0 mm0 mm0 mm0 mm0 mm0 mm0 mm
Probability3 %3 %2 %1 %2 %2 %2 %4 %
Cloud Cover5 %2 %3 %8 %29 %32 %14 %16 %
Wind Speed3 km/h6 km/h7 km/h7 km/h14 km/h14 km/h4 km/h8 km/h
Wind DirectionNNWNNENESWWSWSSWSE
Wind Gusts6 km/h14 km/h14 km/h8 km/h16 km/h16 km/h9 km/h17 km/h
Humidity57 %57 %47 %27 %26 %30 %49 %58 %
Dew Point5°C4°C5°C5°C7°C9°C10°C10°C
000102030405060708091011121314151617181920212223

Weather in St. Thomas for Friday, 21 Aug 2026

Sunrise: 06:37
Sunset: 20:18
Moonrise: 16:28
Moonset: 00:01
UV Index: 6
02:0005:0008:0011:0014:0017:0020:0023:00
Clear Partly Cloudy Partly Cloudy Partly Cloudy Partly Cloudy Patchy rain nearbyPatchy rain nearbyLight rain shower
Temperature19°C16°C18°C20°C22°C26°C22°C17°C
Feels Like19°C16°C18°C20°C22°C26°C22°C17°C
Precipitation0 mm0 mm0 mm0 mm0 mm0 mm0 mm1.1 mm
Probability4 %8 %6 %6 %6 %8 %13 %75 %
Cloud Cover16 %46 %34 %46 %50 %77 %74 %100 %
Wind Speed10 km/h13 km/h15 km/h17 km/h20 km/h21 km/h21 km/h21 km/h
Wind DirectionEEEEEESEENEE
Wind Gusts20 km/h26 km/h26 km/h22 km/h25 km/h24 km/h30 km/h35 km/h
Humidity56 %65 %59 %55 %56 %40 %64 %92 %
Dew Point10°C9°C10°C11°C12°C11°C15°C16°C
000102030405060708091011121314151617181920212223

Weather in St. Thomas for Saturday, 22 Aug 2026

Sunrise: 06:38
Sunset: 20:16
Moonrise: 17:21
Moonset: 00:46
UV Index: 5
02:0005:0008:0011:0014:0017:0020:0023:00
Light rain showerPatchy rain nearbyOvercast Light rain showerLight rain showerLight rain showerLight rain showerPatchy rain nearby
Temperature18°C18°C18°C20°C21°C19°C17°C16°C
Feels Like18°C18°C18°C20°C21°C19°C17°C16°C
Precipitation0.2 mm0 mm0 mm0.6 mm0.5 mm0.2 mm0.6 mm0 mm
Probability52 %35 %34 %67 %65 %47 %67 %34 %
Cloud Cover100 %100 %100 %100 %100 %100 %100 %95 %
Wind Speed19 km/h18 km/h17 km/h14 km/h6 km/h21 km/h18 km/h17 km/h
Wind DirectionEEEEENENENNE
Wind Gusts30 km/h27 km/h26 km/h19 km/h9 km/h33 km/h29 km/h25 km/h
Humidity98 %97 %98 %96 %93 %95 %96 %97 %
Dew Point17°C18°C18°C19°C20°C18°C17°C16°C
000102030405060708091011121314151617181920212223

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