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

St. Thomas, Ontario

25°F
Location Chevron down
Location News Videos
Use Current Location
Recent

St. Thomas

Ontario

25°
No results found.
Try searching for a city, zip code or point of interest.
settings
St. Thomas, 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
Saturday, December 20

Current Weather

3:42 AM

25°F
Mostly clear
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
RealFeel®
22°
Wind
W 6 mph
Wind Gusts
11 mph
Humidity
70%
Indoor Humidity
28% (Very Dry)
Dew Point
16° F
Pressure
↔ 30.12 in
Cloud Cover
24%
Visibility
13 mi
Cloud Ceiling
40000 ft

Day

12/20
39°Hi
RealFeel® 26°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
RealFeel Shade™ 26°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
Cloudy and increasingly windy

Max UV Index1.0 (Low)

AccuLumen Brightness Index™1 (Dark)

WindSSW 17 mph

Wind Gusts32 mph

Probability of Precipitation25%

Probability of Thunderstorms0%

Precipitation0.00 in

Cloud Cover100%

Morning

Afternoon

Night

12/20
19°Lo
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
Partly cloudy and breezy

WindW 15 mph

Wind Gusts31 mph

Probability of Precipitation5%

Probability of Thunderstorms0%

Precipitation0.00 in

Cloud Cover37%

Evening

Overnight

Sun & Moon

9 hrs 02 mins
Rise 7:51 AM
Set 4:53 PM
Waxing Crescent
Rise 8:46 AM
Set 5:08 PM

Temperature History

12/20
High
Low
Forecast
39°
19°
Average
32°
19°
Last Year
29°
18°
Record
55°
1957
-16°
1942

Further Ahead

Hourly

Daily

Monthly

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Weather Forecasts

Christmas week US travelers to face stormy weather on West Coast

6 hours ago

Weather News

Largest wildlife overpass in North America opens across 6-lane highway

13 hours ago

Weather Forecasts

Heavy rain, flooding to focus on California leading up to Christmas

12 hours ago

Winter Weather

What are the snowiest cities in the US?

1 day ago

Winter Weather

White Christmas forecast 2025: Storm may deliver last-minute snow

2 days ago

 More Stories

Featured Stories

Weather News


Los Angeles wildfires linked to spike in heart, lung emergencies

17 hours ago

Astronomy

Satellite ‘Crash Clock’ shows orbit 2.8 days from potential disaster

2 days ago

Weather News

Why the weirdest sea level changes on Earth are happening off the coas...

1 day ago

Weather News

Is it safe to eat snow? Here's what the science says

2 days ago

Astronomy

Interstellar comet 3I/ATLAS swings by Earth this week

17 hours ago
World North America Canada Ontario St. Thomas

Weather Near St. Thomas:

  • Cleveland, OH
  • Hamilton, Ontario
  • London, 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 RealFeel® and RealFeel Shade™ 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 RealFeel® and RealFeel Shade™ 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
© 2025 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

...

...

...