For Business
|
Warnings
Data Suite
Forensics
Advertising
Superior Accuracy™

Ancaster, Ontario

12°F

Location

Location News Videos

Use Current Location

Recent

Ancaster

Ontario

No results found.

Try searching for a city, zip code or point of interest.

Create Account Unlock extended daily forecasts and additional saved locations — all with your free account.

Have an account already? Login

settings

Ancaster, 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

WinterCast

Little to no accumulation

Mon, 2/2, 9:00 PM - Tue, 2/3, 12:00 AM

Snow

5 PM

14°

RealFeel® 5°

Bitterly Cold

RealFeel Guide

Bitterly Cold

-10° to 9°

Caution advised. Frostbite to exposed skin within 15 minutes. Hypothermia likely without protective clothing.

7%

Mostly sunny

Yellow Warning - Cold

4:38 PM Friday - 5:56 PM Sunday

RealFeel Shade™5°

WindW 8 mph

Air QualityFair

Max UV Index0.0 (Low)

Wind Gusts14 mph

Humidity57%

Indoor Humidity17% (Extremely Dry)

Dew Point2° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover24%

Visibility10 mi

Cloud Ceiling30000 ft

6 PM

13°

RealFeel® 5°

Bitterly Cold

RealFeel Guide

Bitterly Cold

-10° to 9°

Caution advised. Frostbite to exposed skin within 15 minutes. Hypothermia likely without protective clothing.

7%

Mostly clear

Yellow Warning - Cold

4:38 PM Friday - 5:56 PM Sunday

WindW 7 mph

Air QualityFair

Wind Gusts13 mph

Humidity62%

Indoor Humidity17% (Extremely Dry)

Dew Point2° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover10%

Visibility10 mi

Cloud Ceiling30000 ft

7 PM

11°

RealFeel® 5°

Bitterly Cold

RealFeel Guide

Bitterly Cold

-10° to 9°

Caution advised. Frostbite to exposed skin within 15 minutes. Hypothermia likely without protective clothing.

7%

Cloudy

Yellow Warning - Cold

4:38 PM Friday - 5:56 PM Sunday

WindWSW 6 mph

Air QualityFair

Wind Gusts12 mph

Humidity72%

Indoor Humidity18% (Extremely Dry)

Dew Point4° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover94%

Visibility10 mi

Cloud Ceiling1900 ft

8 PM

9°

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.

7%

Cloudy

Yellow Warning - Cold

4:38 PM Friday - 5:56 PM Sunday

WindWSW 6 mph

Air QualityFair

Wind Gusts10 mph

Humidity78%

Indoor Humidity19% (Extremely Dry)

Dew Point4° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover94%

Visibility10 mi

Cloud Ceiling1900 ft

9 PM

9°

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.

7%

Cloudy

Yellow Warning - Cold

4:38 PM Friday - 5:56 PM Sunday

WindW 6 mph

Air QualityFair

Wind Gusts9 mph

Humidity80%

Indoor Humidity19% (Extremely Dry)

Dew Point4° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover94%

Visibility10 mi

Cloud Ceiling1900 ft

10 PM

9°

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.

7%

Cloudy

Yellow Warning - Cold

4:38 PM Friday - 5:56 PM Sunday

WindW 6 mph

Air QualityFair

Wind Gusts9 mph

Humidity81%

Indoor Humidity19% (Extremely Dry)

Dew Point4° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover94%

Visibility10 mi

Cloud Ceiling1900 ft

11 PM

7°

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.

7%

Cloudy

Yellow Warning - Cold

4:38 PM Friday - 5:56 PM Sunday

WindWNW 6 mph

Air QualityFair

Wind Gusts9 mph

Humidity82%

Indoor Humidity18% (Extremely Dry)

Dew Point3° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover94%

Visibility10 mi

Cloud Ceiling1900 ft

Further Ahead

Tomorrow

Sunday

Daily

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Winter Weather

Bomb cyclone to focus most of its furious snow on Carolinas

53 minutes ago

Winter Weather

Florida bracing for coldest conditions in decades by Sunday

2 hours ago

Winter Weather

NYC’s 'snow hot tubs' have already melted 23 million of pounds of snow

4 hours ago

Weather Forecasts

Spring forecast: Wintry weather isn’t finished yet in parts of the US

2 days ago

Winter Weather

"Severe winter of 2025-26" to continue for weeks in Midwest, Northeast

1 hour ago

Featured Stories

Astronomy

Full Snow Moon rises Sunday, lighting up winter’s coldest nights

1 day ago

Winter Weather

100 miles of icy Mississippi interstates closed after trucks got stuck

1 day ago

Weather News

Firefighters battle out-of-control fires in Victoria amid record heat

1 day ago

Winter Weather

Spain sees rare snow from Storm Kristin, after extreme winds in Portug...

1 day ago

Winter Weather

Will Phil see his shadow on Monday? Groundhog Day predictions

2 days ago

World North America Canada Ontario Ancaster

Weather Near Ancaster:

Hamilton, Ontario
Mississauga Valley, Ontario
Toronto, 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

...

...

...