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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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Hourly

10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

View hourly forecasts 10-days ahead

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3 PM

77°

RealFeel® 76°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

62%

Thunderstorms

RealFeel Shade™76°

WindSW 16 mph

Air QualityFair

Max UV Index0.8 (Low)

Wind Gusts29 mph

Humidity83%

Indoor Humidity83% (Extremely Humid)

Dew Point72° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover100%

Rain0.05 in

Visibility5 mi

Cloud Ceiling3500 ft

4 PM

78°

RealFeel® 80°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

49%

Cloudy

RealFeel Shade™80°

WindSW 15 mph

Air QualityFair

Max UV Index0.9 (Low)

Wind Gusts29 mph

Humidity82%

Indoor Humidity82% (Extremely Humid)

Dew Point72° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover94%

Visibility10 mi

Cloud Ceiling5100 ft

5 PM

77°

RealFeel® 76°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

54%

Thunderstorms

RealFeel Shade™76°

WindSW 15 mph

Air QualityFair

Max UV Index0.5 (Low)

Wind Gusts29 mph

Humidity84%

Indoor Humidity84% (Extremely Humid)

Dew Point72° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover94%

Rain0.05 in

Visibility5 mi

Cloud Ceiling4000 ft

6 PM

76°

RealFeel® 78°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

49%

Cloudy

RealFeel Shade™78°

WindSW 15 mph

Air QualityFair

Max UV Index0.4 (Low)

Wind Gusts28 mph

Humidity87%

Indoor Humidity87% (Extremely Humid)

Dew Point72° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover94%

Visibility10 mi

Cloud Ceiling6800 ft

7 PM

75°

RealFeel® 76°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

33%

Cloudy

RealFeel Shade™76°

WindSW 15 mph

Air QualityFair

Max UV Index0.1 (Low)

Wind Gusts28 mph

Humidity88%

Indoor Humidity88% (Very Humid)

Dew Point71° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover92%

Visibility10 mi

Cloud Ceiling6900 ft

8 PM

76°

RealFeel® 78°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

7%

Cloudy

WindSW 9 mph

Air QualityFair

Wind Gusts23 mph

Humidity85%

Indoor Humidity85% (Very Humid)

Dew Point71° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover90%

Visibility10 mi

Cloud Ceiling7100 ft

9 PM

74°

RealFeel® 76°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

7%

Cloudy

WindWSW 9 mph

Air QualityFair

Wind Gusts23 mph

Humidity88%

Indoor Humidity88% (Very Humid)

Dew Point70° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover90%

Visibility10 mi

Cloud Ceiling5900 ft

10 PM

74°

RealFeel® 75°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

7%

Cloudy

WindWSW 9 mph

Air QualityFair

Wind Gusts20 mph

Humidity89%

Indoor Humidity89% (Very Humid)

Dew Point70° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover92%

Visibility10 mi

Cloud Ceiling4800 ft

11 PM

73°

RealFeel® 75°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

7%

Cloudy

WindWSW 9 mph

Air QualityFair

Wind Gusts17 mph

Humidity88%

Indoor Humidity88% (Very Humid)

Dew Point70° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover90%

Visibility10 mi

Cloud Ceiling3700 ft

Hourly Weather Forecast for St. Catharines

AccuWeather's hourly forecast for St. Catharines provides hour-by-hour temperatures, RealFeel® Temperature, and precipitation probability through the next 10 days. The current hour shows 77° with a RealFeel® of 76°, thunderstorms with a 62% chance of precipitation. Each hourly forecast includes wind speed, humidity, air quality, UV index, and the AccuLumen Brightness Index™, AccuWeather's measure of perceived outdoor light intensity. Forecasts are generated by proprietary systems developed by AccuWeather meteorologists since 1962.

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Brampton, Ontario
Mississauga Valley, Ontario
Toronto, Ontario

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