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

Cornwall, Ontario

21°F
Location Chevron down
Location News Videos
Use Current Location
Recent

Cornwall

Ontario

21°
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
Cornwall, Ontario Weather
Today WinterCast Local {stormName} Tracker Hourly Daily 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 WinterCast

Hourly

 Daily Radar MinuteCast® Monthly Air Quality Health & Activities

View hourly forecasts 10-days ahead

Activate Your Premium+ Subscription

Chevron right

WinterCast

A coating to an inch

Tue, 3/24, 8:00 PM - Wed, 3/25, 7:00 AM

Snow

Trace - 0.05 in

Thu, 3/26, 8:00 AM - Thu, 3/26, 9:00 AM

Ice

8 AM

22°
RealFeel® 17°
Very Cold
RealFeel Guide
Very Cold
10° to 24°
Caution advised. Older adults, infants, and those with sensitive medical conditions, should be well dressed to protect from hypothermia and frostbite. Coat, hat, gloves and a scarf are appropriate.
LEARN MORE
rain drop 0%
Chevron down
Mostly sunny

RealFeel Shade™17°

WindWSW 7 mph

Air QualityFair

Max UV Index0.9 (Low)

Wind Gusts9 mph

Humidity70%

Indoor Humidity26% (Very Dry)

Dew Point14° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

9 AM

25°
RealFeel® 21°
Very Cold
RealFeel Guide
Very Cold
10° to 24°
Caution advised. Older adults, infants, and those with sensitive medical conditions, should be well dressed to protect from hypothermia and frostbite. Coat, hat, gloves and a scarf are appropriate.
LEARN MORE
rain drop 0%
Chevron down
Mostly sunny

RealFeel Shade™18°

WindWSW 8 mph

Air QualityFair

Max UV Index1.8 (Low)

Wind Gusts9 mph

Humidity62%

Indoor Humidity27% (Very Dry)

Dew Point14° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

10 AM

29°
RealFeel® 25°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 0%
Chevron down
Mostly sunny

RealFeel Shade™20°

WindWSW 9 mph

Air QualityFair

Max UV Index2.6 (Moderate)

Wind Gusts10 mph

Humidity55%

Indoor Humidity27% (Very Dry)

Dew Point14° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

11 AM

32°
RealFeel® 29°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 0%
Chevron down
Mostly sunny

RealFeel Shade™23°

WindSW 10 mph

Air QualityFair

Max UV Index3.6 (Moderate)

Wind Gusts13 mph

Humidity47%

Indoor Humidity26% (Very Dry)

Dew Point14° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

12 PM

34°
RealFeel® 30°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 0%
Chevron down
Partly sunny

RealFeel Shade™24°

WindSW 12 mph

Air QualityFair

Max UV Index4.3 (Moderate)

Wind Gusts15 mph

Humidity42%

Indoor Humidity26% (Very Dry)

Dew Point13° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover35%

Visibility10 mi

Cloud Ceiling30000 ft

1 PM

35°
RealFeel® 31°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 0%
Chevron down
Partly sunny

RealFeel Shade™24°

WindSW 13 mph

Air QualityFair

Max UV Index4.5 (Moderate)

Wind Gusts17 mph

Humidity39%

Indoor Humidity25% (Very Dry)

Dew Point12° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

2 PM

35°
RealFeel® 26°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 7%
Chevron down
Cloudy

RealFeel Shade™24°

WindSW 13 mph

Air QualityFair

Max UV Index1.5 (Low)

Wind Gusts20 mph

Humidity38%

Indoor Humidity25% (Very Dry)

Dew Point12° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover90%

Visibility10 mi

Cloud Ceiling7000 ft

3 PM

35°
RealFeel® 26°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 7%
Chevron down
Cloudy

RealFeel Shade™24°

WindSW 14 mph

Air QualityFair

Max UV Index1.4 (Low)

Wind Gusts23 mph

Humidity39%

Indoor Humidity26% (Very Dry)

Dew Point12° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover94%

Visibility10 mi

Cloud Ceiling14200 ft

4 PM

36°
RealFeel® 25°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 7%
Chevron down
Cloudy

RealFeel Shade™25°

WindSW 15 mph

Air QualityFair

Max UV Index0.8 (Low)

Wind Gusts24 mph

Humidity39%

Indoor Humidity26% (Very Dry)

Dew Point13° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover94%

Visibility10 mi

Cloud Ceiling7000 ft

5 PM

35°
RealFeel® 23°
Very Cold
RealFeel Guide
Very Cold
10° to 24°
Caution advised. Older adults, infants, and those with sensitive medical conditions, should be well dressed to protect from hypothermia and frostbite. Coat, hat, gloves and a scarf are appropriate.
LEARN MORE
rain drop 7%
Chevron down
Cloudy

RealFeel Shade™23°

WindSW 15 mph

Air QualityFair

Max UV Index0.7 (Low)

Wind Gusts25 mph

Humidity42%

Indoor Humidity27% (Very Dry)

Dew Point14° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover94%

Visibility10 mi

Cloud Ceiling13400 ft

6 PM

35°
RealFeel® 22°
Very Cold
RealFeel Guide
Very Cold
10° to 24°
Caution advised. Older adults, infants, and those with sensitive medical conditions, should be well dressed to protect from hypothermia and frostbite. Coat, hat, gloves and a scarf are appropriate.
LEARN MORE
rain drop 7%
Chevron down
Cloudy

RealFeel Shade™22°

WindSW 15 mph

Air QualityFair

Max UV Index0.3 (Low)

Wind Gusts24 mph

Humidity45%

Indoor Humidity27% (Very Dry)

Dew Point15° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover94%

Visibility10 mi

Cloud Ceiling11100 ft

7 PM

32°
RealFeel® 19°
Very Cold
RealFeel Guide
Very Cold
10° to 24°
Caution advised. Older adults, infants, and those with sensitive medical conditions, should be well dressed to protect from hypothermia and frostbite. Coat, hat, gloves and a scarf are appropriate.
LEARN MORE
rain drop 10%
Chevron down
Cloudy

RealFeel Shade™19°

WindSW 14 mph

Air QualityFair

Max UV Index0.0 (Low)

Wind Gusts22 mph

Humidity53%

Indoor Humidity28% (Very Dry)

Dew Point17° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover94%

Visibility10 mi

Cloud Ceiling8700 ft

8 PM

32°
RealFeel® 18°
Very Cold
RealFeel Guide
Very Cold
10° to 24°
Caution advised. Older adults, infants, and those with sensitive medical conditions, should be well dressed to protect from hypothermia and frostbite. Coat, hat, gloves and a scarf are appropriate.
LEARN MORE
rain drop 42%
Chevron down
Flurries

WindSW 13 mph

Air QualityFair

Wind Gusts21 mph

Humidity57%

Indoor Humidity29% (Very Dry)

Dew Point18° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover93%

Snow0.07 in

Visibility5 mi

Cloud Ceiling6400 ft

9 PM

30°
RealFeel® 16°
Very Cold
RealFeel Guide
Very Cold
10° to 24°
Caution advised. Older adults, infants, and those with sensitive medical conditions, should be well dressed to protect from hypothermia and frostbite. Coat, hat, gloves and a scarf are appropriate.
LEARN MORE
rain drop 44%
Chevron down
Flurries

WindSW 13 mph

Air QualityFair

Wind Gusts20 mph

Humidity64%

Indoor Humidity30% (Dry)

Dew Point19° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover89%

Snow0.08 in

Visibility10 mi

Cloud Ceiling5500 ft

10 PM

31°
RealFeel® 19°
Very Cold
RealFeel Guide
Very Cold
10° to 24°
Caution advised. Older adults, infants, and those with sensitive medical conditions, should be well dressed to protect from hypothermia and frostbite. Coat, hat, gloves and a scarf are appropriate.
LEARN MORE
rain drop 40%
Chevron down
Mostly cloudy

WindSW 13 mph

Air QualityFair

Wind Gusts17 mph

Humidity65%

Indoor Humidity31% (Dry)

Dew Point20° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover85%

Visibility10 mi

Cloud Ceiling4600 ft

11 PM

32°
RealFeel® 20°
Very Cold
RealFeel Guide
Very Cold
10° to 24°
Caution advised. Older adults, infants, and those with sensitive medical conditions, should be well dressed to protect from hypothermia and frostbite. Coat, hat, gloves and a scarf are appropriate.
LEARN MORE
rain drop 19%
Chevron down
Mostly cloudy

WindSW 13 mph

Air QualityFair

Wind Gusts16 mph

Humidity64%

Indoor Humidity32% (Dry)

Dew Point22° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover82%

Visibility10 mi

Cloud Ceiling3700 ft

Further Ahead

Tomorrow

Thursday

Daily

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Weather News

Second kona storm brings floods, evacuations, renewed damage to Hawaii

16 hours ago

Weather Forecasts

How long will the record heat wave last in the western U.S.?

18 hours ago

Travel

2 killed, dozens injured after Air Canada flight hits fire truck on ru...

1 day ago

Astronomy

Bright fireball shakes Houston area homes, crashes through roof

17 hours ago

Hurricane

Cyclone Narelle to strengthen, strike Australia 4th time

2 hours ago

 More Stories

Featured Stories

Weather News

Leaves are coming out 3-4 weeks early in some places this spring

3 days ago

Climate

Monarch population rises in Mexico, but California numbers drop

3 days ago

Astronomy

Astronauts enter quarantine; NASA rolls moon rocket to launchpad

3 days ago

Astronomy

Hubble caught a comet breaking apart by accident

3 days ago

Recreation

Death Valley's superbloom, ancient lake are disappearing

3 days 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

...

...

...