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

Castleton, Ontario

42°F
Location Chevron down
Location News Videos
Use Current Location
Recent

Castleton

Ontario

42°
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
Castleton, 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 WinterCast Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities
Monday, April 6

Day

4/6
40°Hi
RealFeel® 29°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
RealFeel Shade™ 28°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
Cloudy and breezy with a flurry

Max UV Index2.0 (Low)

AccuLumen Brightness Index™1 (Dark)

WindWNW 15 mph

Wind Gusts27 mph

Probability of Precipitation43%

Probability of Thunderstorms0%

Precipitation0.00 in

Snow0.05 in

Hours of Precipitation4

Cloud Cover95%

Morning

Afternoon

Night

4/6
26°Lo
RealFeel® 13°
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
Partly to mostly cloudy with a couple of snow showers

WindNW 9 mph

Wind Gusts25 mph

Probability of Precipitation85%

Probability of Thunderstorms4%

Precipitation0.01 in

Snow0.20 in

Hours of Precipitation4

Cloud Cover70%

Evening

Overnight

Sun & Moon

13 hrs 00 mins
Rise 6:44 AM
Set 7:44 PM
Waning Gibbous
Rise 12:01 AM
Set 8:30 AM

Temperature History

4/6
High
Low
Forecast
40°
26°
Average
45°
34°
Last Year
47°
33°

Further Ahead

Hourly

10-Day

Monthly

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Weather Forecasts

Slow-moving rainstorm to douse Florida drought, wildfire risk

2 hours ago

Brush fire quickly explodes in size in Southern California

2 days ago 0:26
Live Blog

Artemis II update: Astronauts prepare for moon flyby operations

LATEST ENTRY

Artemis II crew receives historic message ahead of closest moon flyby

1 hour ago

Winter Weather

Cold air returns with snow in Northeast after weekend warmth

2 hours ago

Severe Weather

Third storm in 3 weeks to unleash more rain, flooding in Hawaii

1 hour ago

 More Stories

Featured Stories

Winter Weather

French vineyards light hundreds of fires to fight off a spring freeze

2 days ago

Climate

How a 264,500-pound home was saved from erosion in the Outer Banks

3 days ago

Why Easter moves around each year

5 days ago 0:31

Recreation

Grand Canyon water restrictions could close South Rim lodging

3 days ago

Astronomy

Pink Moon, 1st full moon of spring, lights up April sky

3 days ago
World North America Canada Ontario Castleton

Weather Near Castleton:

  • Markham, 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

...

...

...