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

Castleton, Ontario

45°F
Location Chevron down
Location News Videos
Use Current Location
Recent

Castleton

Ontario

45°
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

View hourly forecasts 10-days ahead

Activate Your Premium+ Subscription

Chevron right

WinterCast

Little to no accumulation

Mon, 4/6, 11:00 PM - Tue, 4/7, 5:00 AM

Snow

12 PM

46°
RealFeel® 37°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 44%
Chevron down
Cloudy

RealFeel Shade™35°

WindWSW 18 mph

Air QualityFair

Max UV Index1.3 (Low)

Wind Gusts36 mph

Humidity64%

Indoor Humidity43% (Slightly Dry)

Dew Point35° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover97%

Visibility10 mi

Cloud Ceiling3000 ft

1 PM

46°
RealFeel® 36°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 36%
Chevron down
Cloudy

RealFeel Shade™34°

WindWSW 18 mph

Air QualityFair

Max UV Index1.5 (Low)

Wind Gusts36 mph

Humidity61%

Indoor Humidity41% (Slightly Dry)

Dew Point33° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling3000 ft

2 PM

45°
RealFeel® 35°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 34%
Chevron down
Cloudy

RealFeel Shade™34°

WindWSW 18 mph

Air QualityFair

Max UV Index1.2 (Low)

Wind Gusts37 mph

Humidity61%

Indoor Humidity41% (Slightly Dry)

Dew Point33° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling3000 ft

3 PM

44°
RealFeel® 34°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 34%
Chevron down
Cloudy

RealFeel Shade™33°

WindWSW 17 mph

Air QualityFair

Max UV Index1.1 (Low)

Wind Gusts36 mph

Humidity62%

Indoor Humidity41% (Slightly Dry)

Dew Point32° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover98%

Visibility10 mi

Cloud Ceiling2900 ft

4 PM

44°
RealFeel® 34°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 40%
Chevron down
Cloudy

RealFeel Shade™34°

WindW 16 mph

Air QualityFair

Max UV Index0.9 (Low)

Wind Gusts35 mph

Humidity64%

Indoor Humidity41% (Slightly Dry)

Dew Point32° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover97%

Visibility10 mi

Cloud Ceiling4400 ft

5 PM

43°
RealFeel® 30°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 66%
Chevron down
Showers

RealFeel Shade™30°

WindW 15 mph

Air QualityFair

Max UV Index0.6 (Low)

Wind Gusts33 mph

Humidity66%

Indoor Humidity41% (Slightly Dry)

Dew Point32° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover95%

Rain0.02 in

Visibility6 mi

Cloud Ceiling4400 ft

6 PM

41°
RealFeel® 30°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 49%
Chevron down
Cloudy

RealFeel Shade™30°

WindW 16 mph

Air QualityFair

Max UV Index0.3 (Low)

Wind Gusts31 mph

Humidity67%

Indoor Humidity40% (Slightly Dry)

Dew Point31° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover96%

Visibility10 mi

Cloud Ceiling4400 ft

7 PM

40°
RealFeel® 29°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 38%
Chevron down
Cloudy

RealFeel Shade™29°

WindW 16 mph

Air QualityFair

Max UV Index0.1 (Low)

Wind Gusts29 mph

Humidity65%

Indoor Humidity38% (Dry)

Dew Point29° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover97%

Visibility10 mi

Cloud Ceiling4400 ft

8 PM

38°
RealFeel® 26°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 16%
Chevron down
Cloudy

WindW 15 mph

Air QualityFair

Wind Gusts28 mph

Humidity66%

Indoor Humidity37% (Dry)

Dew Point28° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover94%

Visibility10 mi

Cloud Ceiling3100 ft

9 PM

36°
RealFeel® 23°
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
rain drop 16%
Chevron down
Cloudy

WindW 15 mph

Air QualityFair

Wind Gusts28 mph

Humidity71%

Indoor Humidity36% (Dry)

Dew Point27° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover94%

Visibility10 mi

Cloud Ceiling3100 ft

10 PM

35°
RealFeel® 22°
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
rain drop 16%
Chevron down
Cloudy

WindW 16 mph

Air QualityFair

Wind Gusts28 mph

Humidity72%

Indoor Humidity36% (Dry)

Dew Point27° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover94%

Visibility10 mi

Cloud Ceiling2400 ft

11 PM

35°
RealFeel® 22°
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
rain drop 16%
Chevron down
Cloudy

WindW 16 mph

Air QualityFair

Wind Gusts28 mph

Humidity71%

Indoor Humidity36% (Dry)

Dew Point26° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover94%

Visibility10 mi

Cloud Ceiling1700 ft

Hourly Weather Forecast for Castleton

AccuWeather's hourly forecast for Castleton provides hour-by-hour temperatures, RealFeel® Temperature, and precipitation probability through the next 10 days. The current hour shows 46° with a RealFeel® of 37° and a 44% chance of Cloudy. 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

Tuesday

10-Day

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Severe Weather

Storms to rumble through Easter, bringing downpours, damaging winds

5 hours ago

Brush fire quickly explodes in size in Southern California

1 day ago 0:26
Live Blog

Artemis II update: Astronauts prepare for moon flyby operations

LATEST ENTRY

Day 4: Deep space cruising, lunar flyby prep continues

3 hours ago

Weather Forecasts

Wild temperature swings, rain to hit East before calm returns

5 hours ago

Weather Forecasts

Significant warmup in the West to exacerbate ongoing drought

5 hours ago

 More Stories

Featured Stories

Winter Weather

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

1 day ago

Climate

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

2 days ago

Why Easter moves around each year

5 days ago 0:31

Recreation

Grand Canyon water restrictions could close South Rim lodging

2 days ago

Astronomy

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

2 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

...

...

...