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

Cornwall, Ontario

56°F
Location Chevron down
Location News Videos
Use Current Location
Recent

Cornwall

Ontario

56°
No results found.
Try searching for a city, zip code or point of interest.
Get Premium+
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
Cornwall, 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

Tonight's Weather

Wed, Jul 22

Mostly cloudy Lo: 51°

Tomorrow: Mostly sunny and pleasant Hi: 78°

Current Weather

11:54 PM

56°F
RealFeel® 53°
Clear More Details
Wind W 7 mph
Wind Gusts 15 mph
Air Quality Excellent

Cornwall Weather Radar

Cornwall 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

12 AM 56°
rain drop 32%
1 AM 55°
rain drop 22%
2 AM 55°
rain drop 1%
3 AM 54°
rain drop 1%
4 AM 53°
rain drop 1%
5 AM 51°
rain drop 1%
6 AM 53°
rain drop 1%
7 AM 56°
rain drop 1%
8 AM 60°
rain drop 0%
9 AM 63°
rain drop 0%
10 AM 66°
rain drop 0%
11 AM 69°
rain drop 0%

10-Day Weather Forecast

Tonight

7/22

51° Lo

Mostly cloudy

40%

Thu

7/23

78° 55°

Mostly sunny and pleasant

Night: Clear
3%

Fri

7/24

82° 54°

Mostly cloudy

Mainly clear
3%

Sat

7/25

86° 62°

Plenty of sun

Partly cloudy
1%

Sun

7/26

84° 62°

An afternoon shower

Partly cloudy
62%

Mon

7/27

84° 61°

Humid with a few showers

Partly cloudy
84%

Tue

7/28

82° 61°

A shower and t-storm; humid

Rain tapering to showers
60%

Wed

7/29

77° 57°

Thunderstorms in the morning

Rain tapering to showers
72%

Thu

7/30

78° 58°

Cloudy and humid with showers

A couple of showers
77%

Fri

7/31

82° 58°

Mostly cloudy with showers

A shower early; partly cloudy
60%

Sun & Moon

15 hrs 04 mins
Rise 5:33 AM
Set 8:37 PM
Waxing Gibbous
Rise 3:13 PM
Set 12:18 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 Low Data is not supported in this location

Top Stories

Live Blog

Live: Bertha flood threat moves toward Texas after Louisiana landfall

LATEST ENTRY

Bertha shifts west overnight, bringing flooding rain and storm surge toward Texas

2 hours ago

Hurricane

Tropical Storm Bertha crossing Louisiana with rain, storm surge

3 hours ago

Weather Forecasts

Smoke to be a periodic problem into August for Midwest, Northeast

18 hours ago

Weather Forecasts

New heat dome to spread 100 F heat from Texas to Dakotas this weekend

7 hours ago

Severe Weather

Midweek severe storms in eastern US to pack damaging winds, flooding

8 hours ago

 More Stories

Featured Stories

Weather News

Record flooding swamps West Virginia prompting state of emergency

12 hours ago

Weather News

Hot car death near Fort Myers is Florida’s fifth this year

6 hours ago

Travel

Wreckage of Pan Am plane found 74 years after it crashed off Puerto Ri...

13 hours ago

Weather News

5 dead after rescue attempts in fast-moving Ohio river

1 day ago

Weather News

Glimpse what life was like for survivors of the Pompeii disaster

1 day ago
World North America Canada Ontario Cornwall

Weather Near Cornwall:

  • Laval, Quebec
  • Montreal, Quebec
  • Ottawa, 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

...

...

...