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

Cornwall, Ontario

10°F
Location Chevron down
Location News Videos
Use Current Location
Recent

Cornwall

Ontario

10°
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

2 - 4 in

Wed, 2/25, 2:00 AM - Thu, 2/26, 1:00 AM

Snow

3 AM

10°
RealFeel® -7°
Bitterly Cold
RealFeel Guide
Bitterly Cold
-10° to 9°
Caution advised. Frostbite to exposed skin within 15 minutes. Hypothermia likely without protective clothing.
LEARN MORE
rain drop 7%
Chevron down
Mostly cloudy

WindW 12 mph

Air QualityExcellent

Wind Gusts15 mph

Humidity61%

Indoor Humidity15% (Extremely Dry)

Dew Point-2° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover77%

Visibility10 mi

Cloud Ceiling11100 ft

4 AM

8°
RealFeel® -7°
Bitterly Cold
RealFeel Guide
Bitterly Cold
-10° to 9°
Caution advised. Frostbite to exposed skin within 15 minutes. Hypothermia likely without protective clothing.
LEARN MORE
rain drop 7%
Chevron down
Cloudy

WindW 12 mph

Air QualityExcellent

Wind Gusts14 mph

Humidity61%

Indoor Humidity14% (Extremely Dry)

Dew Point-3° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling7100 ft

5 AM

7°
RealFeel® -8°
Bitterly Cold
RealFeel Guide
Bitterly Cold
-10° to 9°
Caution advised. Frostbite to exposed skin within 15 minutes. Hypothermia likely without protective clothing.
LEARN MORE
rain drop 7%
Chevron down
Cloudy

WindW 10 mph

Air QualityExcellent

Wind Gusts14 mph

Humidity64%

Indoor Humidity14% (Extremely Dry)

Dew Point-3° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling5900 ft

6 AM

5°
RealFeel® -10°
Bitterly Cold
RealFeel Guide
Bitterly Cold
-10° to 9°
Caution advised. Frostbite to exposed skin within 15 minutes. Hypothermia likely without protective clothing.
LEARN MORE
rain drop 7%
Chevron down
Cloudy

WindWSW 10 mph

Air QualityExcellent

Wind Gusts14 mph

Humidity63%

Indoor Humidity13% (Extremely Dry)

Dew Point-4° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling4800 ft

7 AM

4°
RealFeel® -13°
Frigid
RealFeel Guide
Frigid
-24° to -11°
Caution advised. Frostbite to exposed skin within 8 minutes. Hypothermia likely without protective clothing.
LEARN MORE
rain drop 6%
Chevron down
Cloudy

RealFeel Shade™-13°

WindWSW 13 mph

Air QualityExcellent

Max UV Index0.1 (Low)

Wind Gusts15 mph

Humidity63%

Indoor Humidity13% (Extremely Dry)

Dew Point-6° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover95%

Visibility5 mi

Cloud Ceiling2000 ft

8 AM

3°
RealFeel® -16°
Frigid
RealFeel Guide
Frigid
-24° to -11°
Caution advised. Frostbite to exposed skin within 8 minutes. Hypothermia likely without protective clothing.
LEARN MORE
rain drop 6%
Chevron down
Cloudy

RealFeel Shade™-16°

WindWSW 13 mph

Air QualityExcellent

Max UV Index0.3 (Low)

Wind Gusts16 mph

Humidity63%

Indoor Humidity12% (Extremely Dry)

Dew Point-7° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover96%

Visibility5 mi

Cloud Ceiling2000 ft

9 AM

2°
RealFeel® -18°
Frigid
RealFeel Guide
Frigid
-24° to -11°
Caution advised. Frostbite to exposed skin within 8 minutes. Hypothermia likely without protective clothing.
LEARN MORE
rain drop 6%
Chevron down
Cloudy

RealFeel Shade™-18°

WindWSW 14 mph

Air QualityExcellent

Max UV Index0.5 (Low)

Wind Gusts17 mph

Humidity64%

Indoor Humidity11% (Extremely Dry)

Dew Point-8° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover96%

Visibility5 mi

Cloud Ceiling2000 ft

10 AM

3°
RealFeel® -16°
Frigid
RealFeel Guide
Frigid
-24° to -11°
Caution advised. Frostbite to exposed skin within 8 minutes. Hypothermia likely without protective clothing.
LEARN MORE
rain drop 6%
Chevron down
Cloudy

RealFeel Shade™-16°

WindWSW 14 mph

Air QualityExcellent

Max UV Index0.6 (Low)

Wind Gusts21 mph

Humidity59%

Indoor Humidity11% (Extremely Dry)

Dew Point-8° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover95%

Visibility5 mi

Cloud Ceiling2000 ft

11 AM

5°
RealFeel® -14°
Frigid
RealFeel Guide
Frigid
-24° to -11°
Caution advised. Frostbite to exposed skin within 8 minutes. Hypothermia likely without protective clothing.
LEARN MORE
rain drop 6%
Chevron down
Cloudy

RealFeel Shade™-14°

WindW 15 mph

Air QualityExcellent

Max UV Index0.8 (Low)

Wind Gusts21 mph

Humidity56%

Indoor Humidity12% (Extremely Dry)

Dew Point-7° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover95%

Visibility5 mi

Cloud Ceiling2000 ft

12 PM

7°
RealFeel® -12°
Frigid
RealFeel Guide
Frigid
-24° to -11°
Caution advised. Frostbite to exposed skin within 8 minutes. Hypothermia likely without protective clothing.
LEARN MORE
rain drop 4%
Chevron down
Cloudy

RealFeel Shade™-12°

WindW 15 mph

Air QualityExcellent

Max UV Index0.8 (Low)

Wind Gusts21 mph

Humidity55%

Indoor Humidity12% (Extremely Dry)

Dew Point-6° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover95%

Visibility5 mi

Cloud Ceiling2000 ft

1 PM

8°
RealFeel® -9°
Bitterly Cold
RealFeel Guide
Bitterly Cold
-10° to 9°
Caution advised. Frostbite to exposed skin within 15 minutes. Hypothermia likely without protective clothing.
LEARN MORE
rain drop 0%
Chevron down
Mostly cloudy

RealFeel Shade™-11°

WindW 14 mph

Air QualityExcellent

Max UV Index1.2 (Low)

Wind Gusts20 mph

Humidity55%

Indoor Humidity13% (Extremely Dry)

Dew Point-5° F

AccuLumen Brightness Index™5 (Medium)

Cloud Cover78%

Visibility5 mi

Cloud Ceiling3700 ft

2 PM

9°
RealFeel® -7°
Bitterly Cold
RealFeel Guide
Bitterly Cold
-10° to 9°
Caution advised. Frostbite to exposed skin within 15 minutes. Hypothermia likely without protective clothing.
LEARN MORE
rain drop 0%
Chevron down
Mostly cloudy

RealFeel Shade™-7°

WindW 13 mph

Air QualityFair

Max UV Index1.0 (Low)

Wind Gusts20 mph

Humidity56%

Indoor Humidity14% (Extremely Dry)

Dew Point-4° F

AccuLumen Brightness Index™5 (Medium)

Cloud Cover77%

Visibility5 mi

Cloud Ceiling3700 ft

3 PM

10°
RealFeel® -4°
Bitterly Cold
RealFeel Guide
Bitterly Cold
-10° to 9°
Caution advised. Frostbite to exposed skin within 15 minutes. Hypothermia likely without protective clothing.
LEARN MORE
rain drop 0%
Chevron down
Mostly cloudy

RealFeel Shade™-4°

WindW 12 mph

Air QualityFair

Max UV Index0.7 (Low)

Wind Gusts20 mph

Humidity56%

Indoor Humidity14% (Extremely Dry)

Dew Point-3° F

AccuLumen Brightness Index™5 (Medium)

Cloud Cover77%

Visibility5 mi

Cloud Ceiling3700 ft

4 PM

11°
RealFeel® -1°
Bitterly Cold
RealFeel Guide
Bitterly Cold
-10° to 9°
Caution advised. Frostbite to exposed skin within 15 minutes. Hypothermia likely without protective clothing.
LEARN MORE
rain drop 1%
Chevron down
Mostly cloudy

RealFeel Shade™-1°

WindW 10 mph

Air QualityFair

Max UV Index0.4 (Low)

Wind Gusts20 mph

Humidity56%

Indoor Humidity15% (Extremely Dry)

Dew Point-2° F

AccuLumen Brightness Index™4 (Dull)

Cloud Cover76%

Visibility5 mi

Cloud Ceiling3700 ft

5 PM

9°
RealFeel® -1°
Bitterly Cold
RealFeel Guide
Bitterly Cold
-10° to 9°
Caution advised. Frostbite to exposed skin within 15 minutes. Hypothermia likely without protective clothing.
LEARN MORE
rain drop 1%
Chevron down
Mostly cloudy

RealFeel Shade™-1°

WindW 8 mph

Air QualityFair

Max UV Index0.2 (Low)

Wind Gusts15 mph

Humidity61%

Indoor Humidity15% (Extremely Dry)

Dew Point-2° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover76%

Visibility5 mi

Cloud Ceiling11700 ft

6 PM

8°
RealFeel® 2°
Bitterly Cold
RealFeel Guide
Bitterly Cold
-10° to 9°
Caution advised. Frostbite to exposed skin within 15 minutes. Hypothermia likely without protective clothing.
LEARN MORE
rain drop 1%
Chevron down
Mostly cloudy

WindWSW 6 mph

Air QualityExcellent

Wind Gusts10 mph

Humidity64%

Indoor Humidity15% (Extremely Dry)

Dew Point-2° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover76%

Visibility5 mi

Cloud Ceiling19700 ft

7 PM

7°
RealFeel® 4°
Bitterly Cold
RealFeel Guide
Bitterly Cold
-10° to 9°
Caution advised. Frostbite to exposed skin within 15 minutes. Hypothermia likely without protective clothing.
LEARN MORE
rain drop 1%
Chevron down
Intermittent clouds

WindSSW 5 mph

Air QualityFair

Wind Gusts6 mph

Humidity66%

Indoor Humidity14% (Extremely Dry)

Dew Point-2° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover61%

Visibility10 mi

Cloud Ceiling27700 ft

8 PM

5°
RealFeel® 3°
Bitterly Cold
RealFeel Guide
Bitterly Cold
-10° to 9°
Caution advised. Frostbite to exposed skin within 15 minutes. Hypothermia likely without protective clothing.
LEARN MORE
rain drop 1%
Chevron down
Intermittent clouds

WindSSW 5 mph

Air QualityFair

Wind Gusts6 mph

Humidity71%

Indoor Humidity14% (Extremely Dry)

Dew Point-3° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover68%

Visibility10 mi

Cloud Ceiling23900 ft

9 PM

3°
RealFeel® 0°
Bitterly Cold
RealFeel Guide
Bitterly Cold
-10° to 9°
Caution advised. Frostbite to exposed skin within 15 minutes. Hypothermia likely without protective clothing.
LEARN MORE
rain drop 1%
Chevron down
Intermittent clouds

WindS 5 mph

Air QualityFair

Wind Gusts6 mph

Humidity76%

Indoor Humidity14% (Extremely Dry)

Dew Point-3° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover70%

Visibility10 mi

Cloud Ceiling20100 ft

10 PM

1°
RealFeel® -3°
Bitterly Cold
RealFeel Guide
Bitterly Cold
-10° to 9°
Caution advised. Frostbite to exposed skin within 15 minutes. Hypothermia likely without protective clothing.
LEARN MORE
rain drop 1%
Chevron down
Intermittent clouds

WindS 6 mph

Air QualityFair

Wind Gusts7 mph

Humidity83%

Indoor Humidity14% (Extremely Dry)

Dew Point-3° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover70%

Visibility10 mi

Cloud Ceiling16300 ft

11 PM

3°
RealFeel® -1°
Bitterly Cold
RealFeel Guide
Bitterly Cold
-10° to 9°
Caution advised. Frostbite to exposed skin within 15 minutes. Hypothermia likely without protective clothing.
LEARN MORE
rain drop 1%
Chevron down
Intermittent clouds

WindSSE 6 mph

Air QualityFair

Wind Gusts7 mph

Humidity80%

Indoor Humidity15% (Extremely Dry)

Dew Point-2° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover70%

Visibility10 mi

Cloud Ceiling13900 ft

Further Ahead

Tomorrow

Thursday

Daily

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Live Blog

Blizzard updates: Northeast travel shut down, over 3 feet piles up

LATEST ENTRY

Travel ban for Southeastern Massachusetts, Rhode Island continues amid blizzard conditions

4 hours ago

Winter Weather

More winter weather on the way behind blockbuster blizzard

12 hours ago

Sparks fly as blizzard knocks out power in Massachussetts

16 hours ago 0:46

Winter Weather

Atmospheric river to blast West Coast with more flooding, snow up high

10 hours ago

Weather Forecasts

Cold blast, freezes and fire danger follow last week's heat

10 hours ago

 More Stories

Featured Stories

Travel

Delta flight returns to airport after engine trouble sparks grass fire

16 hours ago

Winter Weather

6 close friends on ski trip identified among those killed in avalanche

3 days ago

Winter Weather

Utah’s 2026 avalanche season turns deadly after recent surge in slides

3 days ago

Climate

75% of global coffee supply faces rising extreme heat, analysis says

4 days ago

Travel

The island with an air-conditioned ‘forest’ to cope with summers

4 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

...

...

...