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

Unionville, Ontario

22°F
Location Chevron down
Location News Videos
Use Current Location
Recent

Unionville

Ontario

22°
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
Unionville, 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, 3/16, 5:00 PM - Tue, 3/17, 8:00 PM

Snow

Trace - 0.05 in

Sun, 3/22, 1:00 AM - Sun, 3/22, 2:00 AM

Ice

2 AM

20°
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 58%
Chevron down
Flurries
alerts

Special Weather Statement

12:20 AM Tuesday - 1:00 PM Tuesday

WindWSW 21 mph

Air QualityFair

Wind Gusts38 mph

Humidity68%

Indoor Humidity25% (Very Dry)

Dew Point11° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Snowtrace

Visibility8 mi

Cloud Ceiling4000 ft

3 AM

18°
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 58%
Chevron down
Flurries
alerts

Special Weather Statement

12:20 AM Tuesday - 1:00 PM Tuesday

WindWSW 21 mph

Air QualityFair

Wind Gusts39 mph

Humidity64%

Indoor Humidity22% (Very Dry)

Dew Point8° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover99%

Snowtrace

Visibility8 mi

Cloud Ceiling2000 ft

4 AM

17°
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 48%
Chevron down
Cloudy
alerts

Special Weather Statement

12:20 AM Tuesday - 1:00 PM Tuesday

WindWSW 22 mph

Air QualityFair

Wind Gusts40 mph

Humidity62%

Indoor Humidity20% (Very Dry)

Dew Point6° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover99%

Visibility8 mi

Cloud Ceiling2000 ft

5 AM

15°
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 46%
Chevron down
Cloudy
alerts

Special Weather Statement

12:20 AM Tuesday - 1:00 PM Tuesday

WindWSW 21 mph

Air QualityFair

Wind Gusts39 mph

Humidity62%

Indoor Humidity19% (Extremely Dry)

Dew Point4° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover99%

Visibility8 mi

Cloud Ceiling2000 ft

6 AM

14°
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 55%
Chevron down
Flurries
alerts

Special Weather Statement

12:20 AM Tuesday - 1:00 PM Tuesday

WindW 20 mph

Air QualityFair

Wind Gusts37 mph

Humidity62%

Indoor Humidity18% (Extremely Dry)

Dew Point3° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover99%

Snowtrace

Visibility8 mi

Cloud Ceiling2700 ft

7 AM

13°
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 46%
Chevron down
Cloudy
alerts

Special Weather Statement

12:20 AM Tuesday - 1:00 PM Tuesday

WindW 18 mph

Air QualityFair

Wind Gusts35 mph

Humidity63%

Indoor Humidity18% (Extremely Dry)

Dew Point2° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover99%

Visibility8 mi

Cloud Ceiling2000 ft

8 AM

12°
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 37%
Chevron down
Cloudy
alerts

Special Weather Statement

12:20 AM Tuesday - 1:00 PM Tuesday

RealFeel Shade™-8°

WindW 16 mph

Air QualityFair

Max UV Index0.2 (Low)

Wind Gusts40 mph

Humidity63%

Indoor Humidity17% (Extremely Dry)

Dew Point2° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover99%

Visibility5 mi

Cloud Ceiling2000 ft

9 AM

13°
RealFeel® -7°
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 44%
Chevron down
Cloudy
alerts

Special Weather Statement

12:20 AM Tuesday - 1:00 PM Tuesday

RealFeel Shade™-7°

WindWNW 16 mph

Air QualityFair

Max UV Index0.5 (Low)

Wind Gusts40 mph

Humidity60%

Indoor Humidity17% (Extremely Dry)

Dew Point1° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover94%

Visibility5 mi

Cloud Ceiling2000 ft

10 AM

14°
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 51%
Chevron down
Flurries
alerts

Special Weather Statement

12:20 AM Tuesday - 1:00 PM Tuesday

RealFeel Shade™-6°

WindWNW 16 mph

Air QualityFair

Max UV Index0.7 (Low)

Wind Gusts39 mph

Humidity55%

Indoor Humidity17% (Extremely Dry)

Dew Point1° F

AccuLumen Brightness Index™3 (Dull)

Cloud Cover89%

Snowtrace

Visibility5 mi

Cloud Ceiling2900 ft

11 AM

15°
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 57%
Chevron down
Flurries
alerts

Special Weather Statement

12:20 AM Tuesday - 1:00 PM Tuesday

RealFeel Shade™-5°

WindWNW 16 mph

Air QualityFair

Max UV Index1.1 (Low)

Wind Gusts39 mph

Humidity53%

Indoor Humidity17% (Extremely Dry)

Dew Point1° F

AccuLumen Brightness Index™4 (Dull)

Cloud Cover84%

Snowtrace

Visibility5 mi

Cloud Ceiling2900 ft

12 PM

18°
RealFeel® 0°
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 47%
Chevron down
Mostly cloudy
alerts

Special Weather Statement

12:20 AM Tuesday - 1:00 PM Tuesday

RealFeel Shade™-2°

WindWNW 17 mph

Air QualityFair

Max UV Index1.2 (Low)

Wind Gusts38 mph

Humidity50%

Indoor Humidity17% (Extremely Dry)

Dew Point2° F

AccuLumen Brightness Index™3 (Dull)

Cloud Cover89%

Visibility5 mi

Cloud Ceiling2000 ft

1 PM

20°
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 38%
Chevron down
Cloudy

RealFeel Shade™1°

WindWNW 17 mph

Air QualityFair

Max UV Index1.2 (Low)

Wind Gusts37 mph

Humidity49%

Indoor Humidity18% (Extremely Dry)

Dew Point4° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover94%

Visibility5 mi

Cloud Ceiling2000 ft

2 PM

22°
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.
LEARN MORE
rain drop 34%
Chevron down
Cloudy

RealFeel Shade™5°

WindWNW 17 mph

Air QualityFair

Max UV Index1.0 (Low)

Wind Gusts36 mph

Humidity48%

Indoor Humidity19% (Very Dry)

Dew Point5° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover99%

Visibility5 mi

Cloud Ceiling2000 ft

3 PM

23°
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 34%
Chevron down
Cloudy

RealFeel Shade™6°

WindWNW 17 mph

Air QualityFair

Max UV Index0.8 (Low)

Wind Gusts35 mph

Humidity48%

Indoor Humidity20% (Very Dry)

Dew Point5° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover99%

Visibility5 mi

Cloud Ceiling2000 ft

4 PM

24°
RealFeel® 7°
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 36%
Chevron down
Cloudy

RealFeel Shade™7°

WindW 16 mph

Air QualityExcellent

Max UV Index0.6 (Low)

Wind Gusts33 mph

Humidity47%

Indoor Humidity20% (Very Dry)

Dew Point6° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover99%

Visibility5 mi

Cloud Ceiling2000 ft

5 PM

22°
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.
LEARN MORE
rain drop 49%
Chevron down
Cloudy

RealFeel Shade™5°

WindW 16 mph

Air QualityExcellent

Max UV Index0.4 (Low)

Wind Gusts31 mph

Humidity49%

Indoor Humidity20% (Very Dry)

Dew Point6° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover100%

Visibility5 mi

Cloud Ceiling2000 ft

6 PM

22°
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 59%
Chevron down
Flurries

RealFeel Shade™4°

WindW 16 mph

Air QualityExcellent

Max UV Index0.2 (Low)

Wind Gusts30 mph

Humidity50%

Indoor Humidity20% (Very Dry)

Dew Point6° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover100%

Snowtrace

Visibility5 mi

Cloud Ceiling3100 ft

7 PM

21°
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 59%
Chevron down
Flurries

RealFeel Shade™4°

WindW 14 mph

Air QualityExcellent

Max UV Index0.0 (Low)

Wind Gusts28 mph

Humidity50%

Indoor Humidity20% (Very Dry)

Dew Point5° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Snowtrace

Visibility5 mi

Cloud Ceiling3100 ft

8 PM

20°
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 4%
Chevron down
Cloudy

WindW 13 mph

Air QualityExcellent

Wind Gusts27 mph

Humidity51%

Indoor Humidity19% (Very Dry)

Dew Point5° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling3100 ft

9 PM

19°
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 1%
Chevron down
Cloudy

WindW 12 mph

Air QualityExcellent

Wind Gusts24 mph

Humidity54%

Indoor Humidity20% (Very Dry)

Dew Point5° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover99%

Visibility10 mi

Cloud Ceiling3200 ft

10 PM

19°
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 1%
Chevron down
Cloudy

WindW 9 mph

Air QualityExcellent

Wind Gusts23 mph

Humidity56%

Indoor Humidity20% (Very Dry)

Dew Point6° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover99%

Visibility10 mi

Cloud Ceiling3200 ft

11 PM

19°
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 1%
Chevron down
Cloudy

WindWNW 8 mph

Air QualityExcellent

Wind Gusts22 mph

Humidity57%

Indoor Humidity20% (Very Dry)

Dew Point6° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover98%

Visibility10 mi

Cloud Ceiling3200 ft

Further Ahead

Tomorrow

Thursday

Daily

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Weather News

March megastorm slams U.S. with blizzard, tornado threat: See updates

9 hours ago

Weather Forecasts

Hawaii Kona storm sweeps state with 135-mph winds, 44 inches of rain

12 hours ago

Winter Weather

Strengthening March Megastorm to unleash powerful winds, blizzard

9 hours ago

Severe Weather

High risk for severe weather to erupt in the eastern US

9 hours ago

Severe Weather

Severe weather wallops central, eastern US forcing school closures

10 hours ago

 More Stories

Featured Stories

Weather News

Lightning strikes gas meter, sparking fire next to burn ban sign

3 days ago

Winter Weather

Nine states had their warmest winter ever recorded

5 days ago

Weather News

'Doomsday fish' rescued after washing ashore in Mexico

4 days ago

Recreation

'Quicksand alert' issued at National Park Service site

5 days ago

Severe Weather

Why nighttime tornadoes are 2.5 times more deadly

6 days ago
World North America Canada Ontario Unionville

Weather Near Unionville:

  • Brampton, 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

...

...

...