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

St Catharines, Ontario

53°F
Location Chevron down
Location News Videos
Use Current Location
Recent

St Catharines

Ontario

53°
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

Today's Weather

Mon, May 4

Windy with some sun Hi: 68°

Tonight: Mostly cloudy and increasingly windy with a couple of showers Lo: 54°

Current Weather

2:46 AM

53°F
RealFeel® 48°
Mostly cloudy More Details
Wind SW 9 mph
Wind Gusts 16 mph
Air Quality Fair

MINUTECAST®

Rain starting in 42 min

Now
3:46 AM

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 AM 52°
rain drop 54%
4 AM 51°
rain drop 49%
5 AM 50°
rain drop 19%
6 AM 49°
rain drop 19%
7 AM 49°
rain drop 13%
8 AM 51°
rain drop 0%
9 AM 54°
rain drop 0%
10 AM 57°
rain drop 0%
11 AM 59°
rain drop 0%
12 PM 61°
rain drop 0%
1 PM 63°
rain drop 0%
2 PM 64°
rain drop 0%

10-Day Weather Forecast

Today

5/4

68° 54°

Windy with some sun

Night: A couple of showers

3%

Tue

5/5

63° 43°

Cooler with rain

Rain

94%

Wed

5/6

49° 39°

Cloudy and chilly

Overcast

10%

Thu

5/7

48° 36°

Cloudy, showers around; cold

Partly cloudy

84%

Fri

5/8

52° 39°

A couple of showers

Partly cloudy, a shower late

84%

Sat

5/9

51° 42°

Showers around in the p.m.

Early rain; clearing

60%

Sun

5/10

56° 43°

Mostly cloudy

Partly to mostly cloudy

2%

Mon

5/11

55° 42°

A couple of afternoon showers

Mainly clear

55%

Tue

5/12

58° 44°

Mostly sunny

Partly cloudy

2%

Wed

5/13

58° 46°

Partial sunshine

Cloudy, a little rain late

1%

Sun & Moon

14 hrs 15 mins
Rise 6:06 AM
Set 8:21 PM
Waning Gibbous
Rise 11:52 PM
Set 8:06 AM

Air Quality

See More
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.

Allergy Outlook

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

Top Stories

Weather Forecasts

Turbulent temperatures, more freezes ahead for Midwest, Northeast

11 hours ago

Weather News

5 killed in small plane crash in Texas, authorities say

2 days ago

Weather News

Camp Mystic halts plans to reopen this summer

2 days ago

Weather Forecasts

High-altitude storm to bring gusty thunderstorms to California

11 hours ago

Severe Weather

After lull, dangerous storms to refire in central US starting Monday

11 hours ago

More Stories

Featured Stories

Astronomy

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

2 days ago

Recreation

Watch: Yellowstone hot spring erupts twice in 2 days

2 days 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

3 days ago

Severe Weather

Texas police rescue mom from surging floodwater using jumper cables

3 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

...

...

...