Go Back
  • For Business
  • |
  • Warnings
  • Data Suite
  • Forensics
  • Advertising
  • Superior Accuracy™

St. Catharines, Ontario

46°F
Location Chevron down
Location News Videos
Use Current Location
Recent

St. Catharines

Ontario

46°
No results found.
Try searching for a city, zip code or point of interest.
Create Your Account Unlock extended daily and hourly forecasts — all with your free account.
Let's Go Chevron right
Have an account already? Log In
settings
Help
St. Catharines, Ontario Weather
Today WinterCast Local {stormName} Tracker Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

News & Features

Astronomy

Business

Climate

Health

Recreation

Sports

Travel

For Business

Warnings

Data Suite

Forensics

Advertising

Superior Accuracy™

Video

Winter Center

Today

Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities
Yellow Advisory - Frost

Today's Weather

Sat, May 2

Chilly with clouds and sun; a passing afternoon shower or two Hi: 46°

Tonight: Partly cloudy; freezing temperatures in the normally colder spots Lo: 33°

Current Weather

2:43 PM

46°F
RealFeel® 45°
Mostly cloudy More Details
RealFeel Shade™ 41°
Wind WNW 8 mph
Wind Gusts 8 mph
Air Quality Excellent

MINUTECAST®

Rain starting in 12 min

Now
3:43 PM

Looking Ahead

Cool through Sunday, then warming up Monday and Tuesday

St. Catharines Weather Radar

St. Catharines Weather Radar
Static Radar Temporarily Unavailable
Thank you for your patience as we work to get everything up and running again.
Refresh Page
Clouds
Temperature

Hourly Weather

3 PM 45°
rain drop 45%
4 PM 46°
rain drop 45%
5 PM 46°
rain drop 44%
6 PM 46°
rain drop 47%
7 PM 45°
rain drop 51%
8 PM 44°
rain drop 13%
9 PM 43°
rain drop 9%
10 PM 41°
rain drop 9%
11 PM 39°
rain drop 9%
12 AM 39°
rain drop 9%
1 AM 38°
rain drop 6%
2 AM 36°
rain drop 0%

10-Day Weather Forecast

Today

5/2

46° 33°

An afternoon shower or two

Night: Partly cloudy

55%

Sun

5/3

56° 47°

Increasingly windy

Windy with a shower in spots

25%

Mon

5/4

64° 55°

Windy; a shower in the p.m.

A couple of showers

55%

Tue

5/5

60° 43°

Rain; breezy in the morning

Rain at times

91%

Wed

5/6

49° 39°

Cloudy, a shower; chilly

Overcast with a shower late

55%

Thu

5/7

49° 38°

Cold with occasional rain

Rain and drizzle early

64%

Fri

5/8

52° 39°

Mostly cloudy, windy and cool

Mostly cloudy

25%

Sat

5/9

53° 42°

Mostly cloudy, showers around

A shower early; partly cloudy

55%

Sun

5/10

54° 43°

Partly sunny

Clear

1%

Mon

5/11

57° 45°

Increasing cloudiness

Periods of rain

15%

Sun & Moon

14 hrs 10 mins
Rise 6:09 AM
Set 8:19 PM
Waning Gibbous
Rise 9:52 PM
Set 6:39 AM

Air Quality

See More
Air Quality Excellent

The air quality is ideal for most individuals; enjoy your normal outdoor activities.

Allergy Outlook

See All
Dust & Dander Moderate Data is not supported in this location

Top Stories

Winter Weather

Polar vortex aftermath to bring chilly May days to Midwest, Northeast

1 hour ago

Weather News

5 killed in small plane crash in Texas, authorities say

1 day ago

Weather News

Camp Mystic halts plans to reopen this summer

1 day ago

Weather Forecasts

High-altitude storm to bring gusty thunderstorms to California

1 hour ago

Severe Weather

After lull, severe storms to re-fire in central US starting Monday

2 hours ago

More Stories

Featured Stories

Astronomy

May's biggest astronomy events include shooting stars, rare Blue Moon

1 day ago

Recreation

Watch: Yellowstone hot spring erupts twice in 2 days

1 day ago

Severe Weather

First tornado in nearly 2 years confirmed in West Virginia

1 day ago

Astronomy

SpaceX rocket debris is on a collision course with the moon

2 days ago

Severe Weather

Texas police rescue mom from surging floodwater using jumper cables

2 days ago

World North America Canada Ontario St. Catharines

Weather Near St. Catharines:

  • Brampton, Ontario
  • Mississauga Valley, Ontario
  • Toronto, Ontario
Company
Proven Superior Accuracy™ About AccuWeather Digital Advertising Careers Press Contact Us
Products & Services
For Business For Partners For Advertising AccuWeather APIs AccuWeather Connect Personal Weather Stations
Apps & Downloads
iPhone App Android App See all Apps & Downloads
Subscription Services
AccuWeather Premium AccuWeather Professional
More
AccuWeather Ready Business Health Hurricane Leisure and Recreation Severe Weather Space and Astronomy Sports Travel Weather News Winter Center
Company
Proven Superior Accuracy™ About AccuWeather Digital Advertising Careers Press Contact Us
Products & Services
For Business For Partners For Advertising AccuWeather APIs AccuWeather Connect Personal Weather Stations
Apps & Downloads
iPhone App Android App See all Apps & Downloads
Subscription Services
AccuWeather Premium AccuWeather Professional
More
AccuWeather Ready Business Health Hurricane Leisure and Recreation Severe Weather Space and Astronomy Sports Travel Weather News Winter Center
© 2026 AccuWeather, Inc. "AccuWeather" and sun design are registered trademarks of AccuWeather, Inc. All Rights Reserved.
Terms of Use | Privacy Policy | Cookie Policy | About Your Privacy Do Not Sell or Share My Personal Information | Data Sources

...

...

...