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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

57°

RealFeel® 57°

Cool

RealFeel Guide

Cool

53° to 62°

Light jacket or sweater may be appropriate.

0%

Intermittent clouds

RealFeel Shade™50°

WindNE 14 mph

Air QualityFair

Max UV Index5.1 (Moderate)

Wind Gusts21 mph

Humidity44%

Indoor Humidity30% (Slightly Dry)

Dew Point35° F

AccuLumen Brightness Index™7 (Bright)

Cloud Cover63%

Visibility10 mi

Cloud Ceiling20000 ft

4 PM

57°

RealFeel® 56°

Cool

RealFeel Guide

Cool

53° to 62°

Light jacket or sweater may be appropriate.

0%

Intermittent clouds

RealFeel Shade™52°

WindNE 13 mph

Air QualityFair

Max UV Index3.7 (Moderate)

Wind Gusts20 mph

Humidity43%

Indoor Humidity43% (Slightly Dry)

Dew Point35° F

AccuLumen Brightness Index™5 (Medium)

Cloud Cover74%

Visibility10 mi

Cloud Ceiling30000 ft

5 PM

57°

RealFeel® 54°

Cool

RealFeel Guide

Cool

53° to 62°

Light jacket or sweater may be appropriate.

0%

Mostly cloudy

RealFeel Shade™51°

WindENE 13 mph

Air QualityFair

Max UV Index2.2 (Low)

Wind Gusts18 mph

Humidity44%

Indoor Humidity30% (Slightly Dry)

Dew Point35° F

AccuLumen Brightness Index™4 (Dull)

Cloud Cover83%

Visibility10 mi

Cloud Ceiling30000 ft

6 PM

55°

RealFeel® 52°

Chilly

RealFeel Guide

Chilly

40° to 52°

Jacket or sweater is recommended.

0%

Cloudy

RealFeel Shade™50°

WindENE 12 mph

Air QualityFair

Max UV Index1.1 (Low)

Wind Gusts16 mph

Humidity48%

Indoor Humidity30% (Slightly Dry)

Dew Point36° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover92%

Visibility10 mi

Cloud Ceiling26300 ft

7 PM

54°

RealFeel® 51°

Chilly

RealFeel Guide

Chilly

40° to 52°

Jacket or sweater is recommended.

0%

Cloudy

RealFeel Shade™51°

WindNE 9 mph

Air QualityExcellent

Max UV Index0.6 (Low)

Wind Gusts14 mph

Humidity52%

Indoor Humidity32% (Slightly Dry)

Dew Point37° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover93%

Visibility10 mi

Cloud Ceiling22600 ft

8 PM

53°

RealFeel® 49°

Chilly

RealFeel Guide

Chilly

40° to 52°

Jacket or sweater is recommended.

0%

Intermittent clouds

RealFeel Shade™49°

WindENE 8 mph

Air QualityFair

Max UV Index0.2 (Low)

Wind Gusts12 mph

Humidity57%

Indoor Humidity33% (Slightly Dry)

Dew Point38° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover70%

Visibility10 mi

Cloud Ceiling18800 ft

9 PM

50°

RealFeel® 46°

Chilly

RealFeel Guide

Chilly

40° to 52°

Jacket or sweater is recommended.

0%

Intermittent clouds

WindENE 8 mph

Air QualityFair

Wind Gusts9 mph

Humidity66%

Indoor Humidity35% (Slightly Dry)

Dew Point39° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover70%

Visibility10 mi

Cloud Ceiling22600 ft

10 PM

48°

RealFeel® 44°

Chilly

RealFeel Guide

Chilly

40° to 52°

Jacket or sweater is recommended.

0%

Intermittent clouds

WindENE 7 mph

Air QualityFair

Wind Gusts8 mph

Humidity74%

Indoor Humidity35% (Slightly Dry)

Dew Point40° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover70%

Visibility10 mi

Cloud Ceiling26300 ft

11 PM

46°

RealFeel® 42°

Chilly

RealFeel Guide

Chilly

40° to 52°

Jacket or sweater is recommended.

0%

Intermittent clouds

WindE 8 mph

Air QualityFair

Wind Gusts8 mph

Humidity76%

Indoor Humidity35% (Slightly Dry)

Dew Point39° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover65%

Visibility10 mi

Cloud Ceiling30000 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 57° with a RealFeel® of 57°, intermittent clouds with a 0% 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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