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

Chelmsford, Ontario

-20°F
Location Chevron down
Location News Videos
Use Current Location
Recent

Chelmsford

Ontario

-20°
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
Chelmsford, 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

Mon, 2/9, 9:00 AM - Wed, 2/11, 7:00 AM

Snow

3 AM

-18°
RealFeel® -27°
Dangerous Cold
RealFeel Guide
Dangerous Cold
-43° to -25°
Significant caution advised. Frostbite to exposed skin within 2 minutes. Hypothermia likely without protective clothing.
LEARN MORE
rain drop 0%
Chevron down
Clear

WindNNW 6 mph

Air QualityFair

Wind Gusts9 mph

Humidity100%

Indoor Humidity7% (Dangerously Dry)

Dew Point-18° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover5%

Visibility10 mi

Cloud Ceiling30000 ft

4 AM

-19°
RealFeel® -26°
Dangerous Cold
RealFeel Guide
Dangerous Cold
-43° to -25°
Significant caution advised. Frostbite to exposed skin within 2 minutes. Hypothermia likely without protective clothing.
LEARN MORE
rain drop 0%
Chevron down
Clear

WindNNW 6 mph

Air QualityFair

Wind Gusts9 mph

Humidity100%

Indoor Humidity7% (Dangerously Dry)

Dew Point-19° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover6%

Visibility10 mi

Cloud Ceiling30000 ft

5 AM

-19°
RealFeel® -26°
Dangerous Cold
RealFeel Guide
Dangerous Cold
-43° to -25°
Significant caution advised. Frostbite to exposed skin within 2 minutes. Hypothermia likely without protective clothing.
LEARN MORE
rain drop 0%
Chevron down
Clear

WindNNW 6 mph

Air QualityFair

Wind Gusts9 mph

Humidity100%

Indoor Humidity7% (Dangerously Dry)

Dew Point-19° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover6%

Visibility10 mi

Cloud Ceiling30000 ft

6 AM

-19°
RealFeel® -26°
Dangerous Cold
RealFeel Guide
Dangerous Cold
-43° to -25°
Significant caution advised. Frostbite to exposed skin within 2 minutes. Hypothermia likely without protective clothing.
LEARN MORE
rain drop 0%
Chevron down
Clear

WindN 6 mph

Air QualityFair

Wind Gusts9 mph

Humidity99%

Indoor Humidity7% (Dangerously Dry)

Dew Point-19° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover6%

Visibility10 mi

Cloud Ceiling30000 ft

7 AM

-19°
RealFeel® -25°
Dangerous Cold
RealFeel Guide
Dangerous Cold
-43° to -25°
Significant caution advised. Frostbite to exposed skin within 2 minutes. Hypothermia likely without protective clothing.
LEARN MORE
rain drop 0%
Chevron down
Mostly clear

WindN 6 mph

Air QualityFair

Wind Gusts8 mph

Humidity98%

Indoor Humidity7% (Dangerously Dry)

Dew Point-20° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

8 AM

-17°
RealFeel® -22°
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 0%
Chevron down
Mostly sunny

RealFeel Shade™-22°

WindN 6 mph

Air QualityFair

Max UV Index0.7 (Low)

Wind Gusts8 mph

Humidity91%

Indoor Humidity7% (Dangerously Dry)

Dew Point-19° F

AccuLumen Brightness Index™4 (Dull)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

9 AM

-14°
RealFeel® -17°
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 0%
Chevron down
Mostly sunny

RealFeel Shade™-21°

WindN 6 mph

Air QualityFair

Max UV Index1.4 (Low)

Wind Gusts7 mph

Humidity82%

Indoor Humidity7% (Dangerously Dry)

Dew Point-18° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

10 AM

-11°
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 0%
Chevron down
Mostly sunny

RealFeel Shade™-17°

WindN 6 mph

Air QualityFair

Max UV Index1.9 (Low)

Wind Gusts7 mph

Humidity75%

Indoor Humidity8% (Dangerously Dry)

Dew Point-17° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

11 AM

-8°
RealFeel® -6°
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 sunny

RealFeel Shade™-13°

WindNNW 6 mph

Air QualityFair

Max UV Index2.3 (Low)

Wind Gusts7 mph

Humidity69%

Indoor Humidity8% (Dangerously Dry)

Dew Point-16° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

12 PM

-5°
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 0%
Chevron down
Mostly sunny

RealFeel Shade™-9°

WindNW 5 mph

Air QualityFair

Max UV Index2.4 (Low)

Wind Gusts6 mph

Humidity65%

Indoor Humidity9% (Extremely Dry)

Dew Point-14° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

1 PM

-2°
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 0%
Chevron down
Mostly sunny

RealFeel Shade™-5°

WindW 5 mph

Air QualityFair

Max UV Index2.3 (Low)

Wind Gusts6 mph

Humidity61%

Indoor Humidity9% (Extremely Dry)

Dew Point-12° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

2 PM

1°
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 sunny

RealFeel Shade™-2°

WindW 5 mph

Air QualityFair

Max UV Index1.9 (Low)

Wind Gusts6 mph

Humidity58%

Indoor Humidity10% (Extremely Dry)

Dew Point-11° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

3 PM

3°
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 sunny

RealFeel Shade™0°

WindWSW 5 mph

Air QualityFair

Max UV Index1.4 (Low)

Wind Gusts6 mph

Humidity56%

Indoor Humidity11% (Extremely Dry)

Dew Point-9° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

4 PM

4°
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 0%
Chevron down
Mostly sunny

RealFeel Shade™3°

WindSW 5 mph

Air QualityFair

Max UV Index0.7 (Low)

Wind Gusts6 mph

Humidity56%

Indoor Humidity11% (Extremely Dry)

Dew Point-8° F

AccuLumen Brightness Index™4 (Dull)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

5 PM

2°
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 0%
Chevron down
Mostly sunny

RealFeel Shade™-3°

WindSW 6 mph

Air QualityFair

Max UV Index0.0 (Low)

Wind Gusts7 mph

Humidity63%

Indoor Humidity11% (Extremely Dry)

Dew Point-8° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

6 PM

-1°
RealFeel® -6°
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 clear

WindSSW 6 mph

Air QualityFair

Wind Gusts7 mph

Humidity68%

Indoor Humidity11% (Extremely Dry)

Dew Point-9° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

7 PM

-3°
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 0%
Chevron down
Mostly cloudy

WindSSW 6 mph

Air QualityFair

Wind Gusts7 mph

Humidity74%

Indoor Humidity11% (Extremely Dry)

Dew Point-10° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover76%

Visibility10 mi

Cloud Ceiling30000 ft

8 PM

-4°
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

WindSSW 6 mph

Air QualityFair

Wind Gusts7 mph

Humidity77%

Indoor Humidity10% (Extremely Dry)

Dew Point-10° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover76%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

-5°
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

WindSSW 6 mph

Air QualityFair

Wind Gusts7 mph

Humidity79%

Indoor Humidity10% (Extremely Dry)

Dew Point-10° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover76%

Visibility10 mi

Cloud Ceiling30000 ft

10 PM

-7°
RealFeel® -11°
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 0%
Chevron down
Mostly cloudy

WindSW 6 mph

Air QualityFair

Wind Gusts7 mph

Humidity85%

Indoor Humidity10% (Extremely Dry)

Dew Point-10° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover76%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

-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 0%
Chevron down
Mostly cloudy

WindSW 6 mph

Air QualityFair

Wind Gusts7 mph

Humidity80%

Indoor Humidity10% (Extremely Dry)

Dew Point-10° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover76%

Visibility10 mi

Cloud Ceiling30000 ft

Further Ahead

Tomorrow

Tuesday

Daily

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Winter Weather

Coldest weekend of the winter to grip Northeast; Subzero temperatures

39 minutes ago

Winter Weather

Cold drives heating demand as utility rate hikes impacts millions

1 day ago

Winter Weather

New Jersey firefighter dies after falling into frozen Delaware River

1 day ago

Weather Forecasts

Cold to pull back in eastern U.S. during week two, three of February

39 minutes ago

Winter Weather

Flying snow, ice are injuring drivers: In some states, it can cost you

1 day ago

 More Stories

Featured Stories

Winter Weather

Ice on the Hudson River visible from space

1 day ago

Astronomy

6 planets, moon will align in February, but there's a catch

2 days ago

Recreation

Death Valley seeks tips after illegal off-roading damages rare plants

2 days ago

Weather News

Teen swam hours to get help for family swept out to sea

3 days ago

Winter Weather

Snow piles nearly 7 feet high as deadly storms bury northern Japan

4 days ago
World North America Canada Ontario Chelmsford

Weather Near Chelmsford:

  • Barrie, Ontario
  • Greater Sudbury, Ontario
  • Rouyn-Noranda, Quebec
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

...

...

...