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St. Catharines, Ontario

66°F
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St. Catharines

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St. Catharines, Ontario Weather
Today WinterCast Local {stormName} Tracker Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

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Yellow Warning - Rainfall

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August 22 - September 5

Sat 8/22

79° /63°
97%
Mostly cloudy with a couple of showers and a thunderstorm
alerts

Yellow Warning - Rainfall

9:55 PM Saturday - 1:05 AM Sunday
alerts

Special Weather Statement

5:26 PM Saturday - 10:00 AM Sunday

RealFeel®60°

Cloud Cover95%

WindSSW 8 mph

Wind Gusts16 mph

Total Hours of Precipitation3.5

Total Hours of Rain3.5

Sun 8/23

71° /57°
84%
Partly sunny and breezy with a couple of showers
alerts

Special Weather Statement

5:26 PM Saturday - 10:00 AM Sunday

RealFeel®72°

RealFeel Shade™66°

Max UV Index7.0 (High)

WindWSW 13 mph

Total Hours of Precipitation2

Total Hours of Rain2

Mon 8/24

66° /59°
84%
Intervals of clouds and sun with a couple of showers; breezy

RealFeel®64°

RealFeel Shade™63°

Max UV Index3.0 (Moderate)

WindWSW 12 mph

Total Hours of Precipitation2

Total Hours of Rain2

Tue 8/25

75° /56°
23%
Pleasant with partial sunshine

RealFeel®76°

RealFeel Shade™72°

Max UV Index7.0 (High)

WindW 12 mph

Wed 8/26

77° /62°
1%
Delightful with shifting clouds and sun

RealFeel®83°

RealFeel Shade™76°

Max UV Index4.0 (Moderate)

WindSW 5 mph

Thu 8/27

78° /62°
84%
Sun breaking through clouds at times with a couple of showers; humid

RealFeel®87°

RealFeel Shade™79°

Max UV Index4.0 (Moderate)

WindE 5 mph

Total Hours of Precipitation2

Total Hours of Rain2

Fri 8/28

76° /60°
61%
Mostly cloudy; occasional morning rain and a thunderstorm followed by a couple of thunderstorms in the afternoon

RealFeel®76°

RealFeel Shade™73°

Max UV Index4.0 (Moderate)

WindSW 12 mph

Total Hours of Precipitation2.5

Total Hours of Rain2.5

Sat 8/29

75° /61°
2%
Sunny to partly cloudy and less humid

RealFeel®79°

RealFeel Shade™73°

Max UV Index6.0 (High)

WindNNW 7 mph

Sun 8/30

76° /60°
1%
Mostly cloudy

RealFeel®75°

RealFeel Shade™75°

Max UV Index2.0 (Low)

WindENE 5 mph

Mon 8/31

78° /64°
1%
Partly sunny

RealFeel®79°

RealFeel Shade™76°

Max UV Index6.0 (High)

WindENE 8 mph

Tue 9/1

73° /57°
4%
Partly sunny

RealFeel®80°

RealFeel Shade™75°

Max UV Index6.0 (High)

WindNE 4 mph

Wed 9/2

73° /58°
49%
A shower in places in the morning; otherwise, partly sunny and humid

RealFeel®81°

RealFeel Shade™75°

Max UV Index6.0 (High)

WindSW 5 mph

Total Hours of Precipitation1

Total Hours of Rain1

Thu 9/3

72° /57°
1%
Abundant sunshine

RealFeel®81°

RealFeel Shade™75°

Max UV Index6.0 (High)

WindNW 2 mph

Fri 9/4

72° /60°
69%
Rain most of the time in the morning; otherwise, mostly cloudy

RealFeel®70°

RealFeel Shade™68°

Max UV Index2.0 (Low)

WindNE 18 mph

Total Hours of Precipitation1.5

Total Hours of Rain1.5

Sat 9/5

71° /57°
5%
Plenty of sun

RealFeel®71°

RealFeel Shade™68°

Max UV Index6.0 (High)

WindNE 13 mph

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World North America Canada Ontario St. Catharines

Weather Near St. Catharines:

  • Brampton, Ontario
  • Mississauga Valley, Ontario
  • Toronto, Ontario
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