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

Cornwall, Ontario

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

Cornwall

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
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

View hourly forecasts 10-days ahead

Activate Your Premium+ Subscription

Chevron right

6 AM

48°
RealFeel® 42°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 66%
Chevron down
Showers
alerts

Yellow Warning - Rainfall

4:05 AM Thursday - 10:00 AM Thursday

RealFeel Shade™42°

WindSW 8 mph

Air QualityExcellent

Max UV Index0.0 (Low)

Wind Gusts9 mph

Humidity88%

Indoor Humidity42% (Ideal Humidity)

Dew Point44° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover99%

Visibility5 mi

Cloud Ceiling1100 ft

7 AM

47°
RealFeel® 42°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 49%
Chevron down
Cloudy
alerts

Yellow Warning - Rainfall

4:05 AM Thursday - 10:00 AM Thursday

RealFeel Shade™42°

WindWSW 9 mph

Air QualityExcellent

Max UV Index0.2 (Low)

Wind Gusts9 mph

Humidity89%

Indoor Humidity41% (Ideal Humidity)

Dew Point44° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover99%

Visibility10 mi

Cloud Ceiling1100 ft

8 AM

48°
RealFeel® 42°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 34%
Chevron down
Cloudy
alerts

Yellow Warning - Rainfall

4:05 AM Thursday - 10:00 AM Thursday

RealFeel Shade™42°

WindW 10 mph

Air QualityExcellent

Max UV Index0.4 (Low)

Wind Gusts14 mph

Humidity80%

Indoor Humidity38% (Ideal Humidity)

Dew Point42° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling800 ft

9 AM

48°
RealFeel® 43°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 34%
Chevron down
Cloudy
alerts

Yellow Warning - Rainfall

4:05 AM Thursday - 10:00 AM Thursday

RealFeel Shade™43°

WindW 10 mph

Air QualityExcellent

Max UV Index0.6 (Low)

Wind Gusts13 mph

Humidity78%

Indoor Humidity38% (Ideal Humidity)

Dew Point41° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover99%

Visibility10 mi

Cloud Ceiling1000 ft

10 AM

48°
RealFeel® 43°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 34%
Chevron down
Cloudy

RealFeel Shade™43°

WindW 10 mph

Air QualityExcellent

Max UV Index0.9 (Low)

Wind Gusts13 mph

Humidity75%

Indoor Humidity37% (Ideal Humidity)

Dew Point41° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover99%

Visibility10 mi

Cloud Ceiling1300 ft

11 AM

49°
RealFeel® 44°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 37%
Chevron down
Cloudy

RealFeel Shade™42°

WindW 10 mph

Air QualityExcellent

Max UV Index1.2 (Low)

Wind Gusts13 mph

Humidity73%

Indoor Humidity36% (Slightly Dry)

Dew Point40° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling1500 ft

12 PM

49°
RealFeel® 43°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 40%
Chevron down
Showers

RealFeel Shade™41°

WindW 10 mph

Air QualityFair

Max UV Index1.4 (Low)

Wind Gusts13 mph

Humidity70%

Indoor Humidity36% (Slightly Dry)

Dew Point40° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover100%

Rain0.01 in

Visibility10 mi

Cloud Ceiling1700 ft

1 PM

50°
RealFeel® 47°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 37%
Chevron down
Cloudy

RealFeel Shade™44°

WindW 10 mph

Air QualityFair

Max UV Index1.7 (Low)

Wind Gusts14 mph

Humidity66%

Indoor Humidity35% (Slightly Dry)

Dew Point40° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling1800 ft

2 PM

51°
RealFeel® 48°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 20%
Chevron down
Cloudy

RealFeel Shade™46°

WindW 10 mph

Air QualityFair

Max UV Index1.6 (Low)

Wind Gusts15 mph

Humidity64%

Indoor Humidity35% (Slightly Dry)

Dew Point39° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling2000 ft

3 PM

52°
RealFeel® 49°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 20%
Chevron down
Cloudy

RealFeel Shade™47°

WindW 10 mph

Air QualityFair

Max UV Index1.2 (Low)

Wind Gusts14 mph

Humidity60%

Indoor Humidity34% (Slightly Dry)

Dew Point39° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover99%

Visibility10 mi

Cloud Ceiling2100 ft

4 PM

52°
RealFeel® 48°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 20%
Chevron down
Cloudy

RealFeel Shade™48°

WindW 9 mph

Air QualityFair

Max UV Index1.0 (Low)

Wind Gusts14 mph

Humidity61%

Indoor Humidity34% (Slightly Dry)

Dew Point38° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover99%

Visibility10 mi

Cloud Ceiling2200 ft

5 PM

51°
RealFeel® 48°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 20%
Chevron down
Cloudy

RealFeel Shade™48°

WindW 9 mph

Air QualityFair

Max UV Index0.6 (Low)

Wind Gusts14 mph

Humidity60%

Indoor Humidity33% (Slightly Dry)

Dew Point38° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling2300 ft

6 PM

51°
RealFeel® 48°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 20%
Chevron down
Cloudy

RealFeel Shade™48°

WindW 8 mph

Air QualityFair

Max UV Index0.4 (Low)

Wind Gusts13 mph

Humidity60%

Indoor Humidity32% (Slightly Dry)

Dew Point38° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling2700 ft

7 PM

50°
RealFeel® 47°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 25%
Chevron down
Cloudy

RealFeel Shade™47°

WindW 8 mph

Air QualityFair

Max UV Index0.2 (Low)

Wind Gusts10 mph

Humidity60%

Indoor Humidity32% (Slightly Dry)

Dew Point37° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling3200 ft

8 PM

50°
RealFeel® 47°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 49%
Chevron down
Cloudy

RealFeel Shade™47°

WindW 7 mph

Air QualityExcellent

Max UV Index0.0 (Low)

Wind Gusts9 mph

Humidity60%

Indoor Humidity31% (Slightly Dry)

Dew Point37° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover99%

Visibility10 mi

Cloud Ceiling3600 ft

9 PM

48°
RealFeel® 43°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 57%
Chevron down
Rain

WindWNW 7 mph

Air QualityExcellent

Wind Gusts8 mph

Humidity63%

Indoor Humidity31% (Slightly Dry)

Dew Point36° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover96%

Rain0.01 in

Visibility6 mi

Cloud Ceiling3900 ft

10 PM

46°
RealFeel® 41°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 57%
Chevron down
Rain

WindNW 7 mph

Air QualityExcellent

Wind Gusts8 mph

Humidity66%

Indoor Humidity30% (Slightly Dry)

Dew Point35° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover95%

Rain0.01 in

Visibility6 mi

Cloud Ceiling4200 ft

11 PM

46°
RealFeel® 43°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 49%
Chevron down
Cloudy

WindNW 6 mph

Air QualityExcellent

Wind Gusts7 mph

Humidity65%

Indoor Humidity43% (Slightly Dry)

Dew Point35° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling4600 ft

Hourly Weather Forecast for Cornwall

AccuWeather's hourly forecast for Cornwall provides hour-by-hour temperatures, RealFeel® Temperature, and precipitation probability through the next 10 days. The current hour shows 48° with a RealFeel® of 42°, showers with a 66% chance of precipitation. Each hourly forecast includes wind speed, humidity, air quality, UV index, and the AccuLumen Brightness Index™, AccuWeather's measure of perceived outdoor light intensity. Forecasts are generated by proprietary systems developed by AccuWeather meteorologists since 1962.

Further Ahead

Tomorrow

Saturday

10-Day

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Weather Forecasts

Summer forecast: Heat, storms to shape the season as El Niño develops

16 hours ago

Weather Forecasts

Rain to douse southern U.S. wildfire risk, ease drought into weekend

14 minutes ago

Severe Weather

Tornado survivor recalls emerging from storm shelter in Oklahoma

18 hours ago

Severe Weather

Severe weather on the move into southern, eastern U.S. through midweek

1 hour ago

Severe Weather

EF3 Texas tornado shreds homes, buildings following weekend twisters n...

13 hours ago

 More Stories

Featured Stories

Astronomy

Mysterious green glow in Hawaii sky likely rare atmospheric phenomenon

10 hours ago

Weather News

Humpback whale 'Timmy' guided to safety in rescue off Germany’s coast

15 hours ago

Weather News

World’s largest wildlife crossing to open this year

1 day ago

Astronomy

2 full moons will light up May 2026, including a rare blue moon

1 day ago

Severe Weather

Super tornado outbreak of 2011 still impacts weather forecasting

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

...

...

...