St. Catharines, Ontario, Canada Weather Forecast

Today's Weather

Tue, May 19

More clouds than sun, windy and very warm with a heavy, gusty thunderstorm this afternoon; thunderstorms can bring localized damaging wind gusts Hi: 85°

Tonight: Breezy this evening; increasing clouds with widely separated thunderstorms Lo: 54°

Current Weather

3:19 AM

68°F

RealFeel® 66°

Mostly cloudy More Details

Wind SSW 6 mph

Wind Gusts 10 mph

Air Quality Fair

MINUTECAST®

Rain starting in 1 min

Now

4:19 AM

Looking Ahead

Watch for a heavy thunderstorm this afternoon

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Clouds

Temperature

Hourly Weather

10-Day Weather Forecast

Today

5/19

85° 54°

A heavy t-storm in the p.m.

Night: A stray t-storm; breezy early

55%

Wed

5/20

61° 43°

Cooler; breezy in the morning

Partly cloudy

25%

Thu

5/21

54° 40°

Cool with clouds and sunshine

Partly cloudy

Fri

5/22

57° 49°

Cool with clouds and sun

Occasional rain and drizzle

Sat

5/23

58° 53°

A couple of showers possible

Some rain and a t-storm late

30%

Sun

5/24

64° 52°

An afternoon shower possible

Early rain; otherwise, cloudy

30%

Mon

5/25

64° 56°

Considerable cloudiness

Mostly cloudy

Tue

5/26

70° 55°

Decreasing clouds

Clear to partly cloudy

Wed

5/27

69° 54°

Mostly sunny and less humid

Clear

Thu

5/28

71° 54°

Plenty of sunshine

Clear

Sun & Moon

14 hrs 49 mins

Rise 5:49 AM

Set 8:38 PM

Waxing Crescent

Rise 8:00 AM

Set 12:27 AM

Air Quality

Air Quality Fair

The air quality is generally acceptable for most individuals. However, sensitive groups may experience minor to moderate symptoms from long-term exposure.