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

Unionville, Ontario

9°F
Location Chevron down
Location News Videos
Use Current Location
Recent

Unionville

Ontario

9°
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

Little to no accumulation

Fri, 3/20, 8:00 AM - Fri, 3/20, 9:00 AM

Snow

7 AM

9°
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 7%
Chevron down
Mostly cloudy

WindSE 5 mph

Air QualityFair

Wind Gusts10 mph

Humidity97%

Indoor Humidity22% (Very Dry)

Dew Point8° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover76%

Visibility10 mi

Cloud Ceiling30000 ft

8 AM

12°
RealFeel® 11°
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 6%
Chevron down
Cloudy

RealFeel Shade™11°

WindSSE 5 mph

Air QualityPoor

Max UV Index0.2 (Low)

Wind Gusts9 mph

Humidity88%

Indoor Humidity23% (Very Dry)

Dew Point9° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling3300 ft

9 AM

15°
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 6%
Chevron down
Cloudy

RealFeel Shade™9°

WindS 7 mph

Air QualityPoor

Max UV Index0.5 (Low)

Wind Gusts13 mph

Humidity88%

Indoor Humidity25% (Very Dry)

Dew Point12° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling3400 ft

10 AM

18°
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 6%
Chevron down
Cloudy

RealFeel Shade™8°

WindS 9 mph

Air QualityFair

Max UV Index0.7 (Low)

Wind Gusts15 mph

Humidity81%

Indoor Humidity26% (Very Dry)

Dew Point13° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling3400 ft

11 AM

22°
RealFeel® 11°
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 6%
Chevron down
Cloudy

RealFeel Shade™11°

WindS 12 mph

Air QualityFair

Max UV Index1.0 (Low)

Wind Gusts18 mph

Humidity69%

Indoor Humidity26% (Very Dry)

Dew Point13° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling3400 ft

12 PM

25°
RealFeel® 15°
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 6%
Chevron down
Cloudy

RealFeel Shade™13°

WindS 12 mph

Air QualityFair

Max UV Index1.2 (Low)

Wind Gusts20 mph

Humidity60%

Indoor Humidity26% (Very Dry)

Dew Point13° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling3400 ft

1 PM

29°
RealFeel® 19°
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 7%
Chevron down
Cloudy

RealFeel Shade™17°

WindS 12 mph

Air QualityFair

Max UV Index1.2 (Low)

Wind Gusts22 mph

Humidity54%

Indoor Humidity27% (Very Dry)

Dew Point14° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling3400 ft

2 PM

29°
RealFeel® 19°
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 7%
Chevron down
Cloudy

RealFeel Shade™18°

WindS 12 mph

Air QualityFair

Max UV Index1.0 (Low)

Wind Gusts24 mph

Humidity56%

Indoor Humidity27% (Very Dry)

Dew Point15° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling3400 ft

3 PM

30°
RealFeel® 20°
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 7%
Chevron down
Cloudy

RealFeel Shade™20°

WindS 12 mph

Air QualityFair

Max UV Index0.9 (Low)

Wind Gusts24 mph

Humidity55%

Indoor Humidity28% (Very Dry)

Dew Point16° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling3400 ft

4 PM

31°
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 7%
Chevron down
Cloudy

RealFeel Shade™22°

WindS 12 mph

Air QualityFair

Max UV Index0.7 (Low)

Wind Gusts24 mph

Humidity49%

Indoor Humidity27% (Very Dry)

Dew Point14° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling9600 ft

5 PM

31°
RealFeel® 20°
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 7%
Chevron down
Cloudy

RealFeel Shade™20°

WindS 12 mph

Air QualityFair

Max UV Index0.5 (Low)

Wind Gusts24 mph

Humidity50%

Indoor Humidity26% (Very Dry)

Dew Point14° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling9600 ft

6 PM

31°
RealFeel® 21°
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 7%
Chevron down
Cloudy

RealFeel Shade™21°

WindS 10 mph

Air QualityFair

Max UV Index0.2 (Low)

Wind Gusts22 mph

Humidity51%

Indoor Humidity27% (Very Dry)

Dew Point14° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling9600 ft

7 PM

29°
RealFeel® 21°
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 7%
Chevron down
Cloudy

RealFeel Shade™21°

WindSSE 9 mph

Air QualityFair

Max UV Index0.0 (Low)

Wind Gusts20 mph

Humidity57%

Indoor Humidity28% (Very Dry)

Dew Point16° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling9600 ft

8 PM

29°
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 7%
Chevron down
Cloudy

WindSSE 8 mph

Air QualityFair

Wind Gusts16 mph

Humidity62%

Indoor Humidity29% (Very Dry)

Dew Point18° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling6300 ft

9 PM

29°
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 7%
Chevron down
Cloudy

WindSSE 7 mph

Air QualityFair

Wind Gusts15 mph

Humidity67%

Indoor Humidity30% (Dry)

Dew Point19° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling6300 ft

10 PM

28°
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 7%
Chevron down
Cloudy

WindSSE 7 mph

Air QualityFair

Wind Gusts14 mph

Humidity73%

Indoor Humidity31% (Dry)

Dew Point21° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling4800 ft

11 PM

28°
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 7%
Chevron down
Cloudy

WindSSE 7 mph

Air QualityFair

Wind Gusts14 mph

Humidity78%

Indoor Humidity32% (Dry)

Dew Point22° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling3300 ft

Further Ahead

Tomorrow

Friday

Daily

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Winter Weather

Snow squalls to create highway dangers in Upper Midwest, Northeast

20 hours ago

Weather Forecasts

Record-shattering March scorcher: 70 million to bake in heat dome

1 hour ago

Winter Weather

Blizzard snarls travel; Midwest city sees biggest snow day since 1889

20 hours ago

Weather Forecasts

Pineapple Express to bring flooding in Washington, British Columbia

1 hour ago

Astronomy

See it: Bright daytime meteor triggers sonic boom over Cleveland

18 hours ago

 More Stories

Featured Stories

Astronomy

Exoplanet discovery reveals ‘sulfur world’ that smells like rotten egg...

15 hours ago

Health

Two dead, 11 others infected in meningitis outbreak linked to universi...

16 hours ago

Weather News

Watch the rescue: Coast Guard saves snowmobiler stranded on ice

15 hours ago

Astronomy

Moon project delays among barrage of challenges for NASA

4 days ago

Severe Weather

Why nighttime tornadoes are 2.5 times more deadly

1 week 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

...

...

...