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

Weather in St. Catharines for today, Wednesday, 20 May 2026

Sunrise: 05:48
Sunset: 20:39
Moonrise: 09:18
Moonset: 00:27
UV Index: 8
02:0005:0008:0011:0014:0017:0020:0023:00
Light rain showerLight rain showerPatchy rain nearbySunnySunnyPartly Cloudy Partly Cloudy Clear
Temperature16°C13°C11°C12°C13°C13°C11°C9°C
Feels Like16°C12°C9°C10°C12°C12°C9°C7°C
Precipitation2.2 mm0.2 mm0.1 mm0 mm0 mm0 mm0 mm0 mm
Probability100 %100 %100 %0 %0 %0 %0 %0 %
Cloud Cover96 %100 %100 %2 %13 %51 %32 %3 %
Wind Speed27 km/h18 km/h15 km/h16 km/h15 km/h17 km/h14 km/h11 km/h
Wind DirectionWSWNNWWNWWNWWNWNNWN
Wind Gusts56 km/h38 km/h27 km/h24 km/h25 km/h30 km/h27 km/h21 km/h
Humidity99 %98 %88 %70 %59 %58 %69 %66 %
Dew Point16°C12°C9°C6°C5°C5°C5°C3°C
000102030405060708091011121314151617181920212223

Weather in St. Catharines for tomorrow, Thursday, 21 May 2026

Sunrise: 05:47
Sunset: 20:40
Moonrise: 10:37
Moonset: 01:09
UV Index: 1
02:0005:0008:0011:0014:0017:0020:0023:00
Clear Clear SunnySunnyPartly Cloudy SunnySunnyClear
Temperature8°C7°C7°C8°C9°C10°C9°C8°C
Feels Like6°C4°C4°C5°C7°C8°C8°C6°C
Precipitation0 mm0 mm0 mm0 mm0 mm0 mm0 mm0 mm
Probability0 %0 %0 %0 %0 %0 %0 %0 %
Cloud Cover5 %11 %6 %20 %37 %2 %0 %0 %
Wind Speed13 km/h19 km/h24 km/h21 km/h17 km/h15 km/h10 km/h9 km/h
Wind DirectionNNENENEENEENEEESE
Wind Gusts21 km/h29 km/h32 km/h24 km/h22 km/h23 km/h18 km/h18 km/h
Humidity69 %75 %65 %57 %52 %52 %66 %68 %
Dew Point3°C3°C1°C0°C0°C1°C4°C2°C
000102030405060708091011121314151617181920212223

Weather in St. Catharines for Friday, 22 May 2026

Sunrise: 05:46
Sunset: 20:41
Moonrise: 11:54
Moonset: 01:41
UV Index: 3
02:0005:0008:0011:0014:0017:0020:0023:00
Clear Clear SunnyPartly Cloudy Partly Cloudy SunnySunnyPartly Cloudy
Temperature7°C6°C9°C11°C12°C12°C11°C11°C
Feels Like5°C4°C6°C9°C10°C9°C9°C9°C
Precipitation0 mm0 mm0 mm0 mm0 mm0 mm0 mm0 mm
Probability0 %0 %0 %0 %0 %0 %0 %0 %
Cloud Cover8 %20 %10 %29 %47 %23 %15 %32 %
Wind Speed9 km/h13 km/h14 km/h23 km/h26 km/h26 km/h22 km/h16 km/h
Wind DirectionEEEENEENEENEENEE
Wind Gusts20 km/h26 km/h23 km/h34 km/h42 km/h49 km/h43 km/h33 km/h
Humidity65 %64 %64 %62 %62 %70 %73 %67 %
Dew Point1°C0°C2°C4°C5°C7°C6°C5°C
000102030405060708091011121314151617181920212223

Weather in St. Catharines for Saturday, 23 May 2026

Sunrise: 05:46
Sunset: 20:42
Moonrise: 13:06
Moonset: 02:06
UV Index: 3
02:0005:0008:0011:0014:0017:0020:0023:00
Partly Cloudy Overcast Overcast Patchy rain nearbyOvercast Cloudy Cloudy Patchy rain nearby
Temperature11°C10°C11°C11°C11°C12°C12°C12°C
Feels Like9°C7°C8°C9°C9°C10°C10°C9°C
Precipitation0 mm0 mm0 mm0.1 mm0 mm0 mm0 mm0 mm
Probability0 %0 %0 %100 %0 %0 %0 %86 %
Cloud Cover47 %89 %100 %100 %100 %74 %72 %100 %
Wind Speed16 km/h21 km/h22 km/h21 km/h23 km/h23 km/h23 km/h22 km/h
Wind DirectionEENEENEENEENEEEESE
Wind Gusts33 km/h37 km/h37 km/h35 km/h40 km/h39 km/h39 km/h37 km/h
Humidity69 %79 %87 %91 %89 %86 %83 %83 %
Dew Point5°C7°C8°C9°C10°C10°C9°C9°C
000102030405060708091011121314151617181920212223

Weather in St. Catharines for Sunday, 24 May 2026

Sunrise: 05:45
Sunset: 20:43
Moonrise: 14:15
Moonset: 02:27
UV Index: 3
02:0005:0008:0011:0014:0017:0020:0023:00
Patchy rain nearbyPatchy rain nearbyPatchy rain nearbyPatchy rain nearbyPatchy rain nearbyPatchy rain nearbyPatchy rain nearbyCloudy
Temperature11°C11°C11°C12°C13°C15°C14°C13°C
Feels Like9°C9°C10°C11°C13°C14°C14°C12°C
Precipitation0.1 mm0 mm0.1 mm0.1 mm0.1 mm0.1 mm0 mm0 mm
Probability100 %63 %100 %100 %100 %100 %63 %0 %
Cloud Cover100 %100 %100 %100 %100 %100 %100 %71 %
Wind Speed20 km/h17 km/h16 km/h13 km/h10 km/h10 km/h14 km/h16 km/h
Wind DirectionESEESEESESESEESESSSE
Wind Gusts32 km/h27 km/h26 km/h21 km/h17 km/h20 km/h29 km/h28 km/h
Humidity88 %88 %88 %88 %86 %82 %82 %83 %
Dew Point9°C9°C9°C10°C11°C12°C12°C10°C
000102030405060708091011121314151617181920212223

Weather in St. Catharines for Monday, 25 May 2026

Sunrise: 05:44
Sunset: 20:44
Moonrise: 15:21
Moonset: 02:46
UV Index: 3
02:0005:0008:0011:0014:0017:0020:0023:00
Partly Cloudy Partly Cloudy Patchy rain nearbyPatchy light drizzlePatchy rain nearbyLight drizzleLight rainLight drizzle
Temperature12°C12°C13°C14°C14°C14°C15°C14°C
Feels Like11°C11°C12°C13°C14°C14°C14°C13°C
Precipitation0 mm0 mm0 mm0.5 mm0 mm0.2 mm1.6 mm0.2 mm
Probability0 %0 %68 %100 %77 %100 %100 %100 %
Cloud Cover58 %55 %100 %56 %60 %100 %100 %100 %
Wind Speed10 km/h10 km/h11 km/h7 km/h5 km/h8 km/h12 km/h15 km/h
Wind DirectionSSESSESSESSEENESSESSE
Wind Gusts18 km/h20 km/h18 km/h13 km/h10 km/h17 km/h23 km/h30 km/h
Humidity87 %93 %88 %93 %94 %95 %99 %97 %
Dew Point10°C10°C11°C12°C13°C13°C15°C14°C
000102030405060708091011121314151617181920212223

Weather in St. Catharines for Tuesday, 26 May 2026

Sunrise: 05:43
Sunset: 20:45
Moonrise: 16:26
Moonset: 03:05
UV Index: 4
02:0005:0008:0011:0014:0017:0020:0023:00
MistLight rainPatchy rain nearbyPatchy rain nearbyCloudy Patchy rain nearbyPartly Cloudy Partly Cloudy
Temperature14°C14°C15°C17°C20°C20°C17°C16°C
Feels Like13°C13°C14°C17°C20°C20°C17°C16°C
Precipitation0.1 mm1.1 mm0.1 mm0 mm0 mm0 mm0 mm0 mm
Probability100 %100 %100 %85 %0 %78 %0 %0 %
Cloud Cover100 %100 %100 %100 %72 %84 %54 %52 %
Wind Speed11 km/h12 km/h15 km/h21 km/h27 km/h26 km/h17 km/h15 km/h
Wind DirectionSSSWSSWSWSWSWSWSSW
Wind Gusts21 km/h24 km/h31 km/h42 km/h55 km/h54 km/h36 km/h31 km/h
Humidity96 %98 %99 %98 %84 %86 %96 %99 %
Dew Point13°C13°C15°C16°C18°C18°C16°C16°C
000102030405060708091011121314151617181920212223

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