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

Mount St. Louis, Ontario

33°F
Location Chevron down
Location News Videos
Use Current Location
Recent

Mount St. Louis

Ontario

33°
No results found.
Try searching for a city, zip code or point of interest.
settings
Mount St. Louis, 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

WinterCast

3 - 6 in

Fri, 12/26, 10:00 AM - Fri, 12/26, 7:00 PM

Snow

0.05 - 0.15 in

Fri, 12/26, 7:00 PM - Sat, 12/27, 6:00 AM

Ice

8 AM

31°
RealFeel® 18°
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 0%
Chevron down
Cloudy

RealFeel Shade™18°

WindNNW 15 mph

Air QualityExcellent

Max UV Index0.1 (Low)

Wind Gusts27 mph

Humidity96%

Indoor Humidity39% (Slightly Dry)

Dew Point30° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover97%

Visibility10 mi

Cloud Ceiling1800 ft

9 AM

30°
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 0%
Chevron down
Cloudy

RealFeel Shade™15°

WindNNW 15 mph

Air QualityExcellent

Max UV Index0.2 (Low)

Wind Gusts28 mph

Humidity87%

Indoor Humidity35% (Dry)

Dew Point26° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover97%

Visibility10 mi

Cloud Ceiling1900 ft

10 AM

27°
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
rain drop 0%
Chevron down
Cloudy

RealFeel Shade™13°

WindNNW 15 mph

Air QualityExcellent

Max UV Index0.4 (Low)

Wind Gusts29 mph

Humidity79%

Indoor Humidity32% (Dry)

Dew Point22° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover97%

Visibility10 mi

Cloud Ceiling1900 ft

11 AM

25°
RealFeel® 10°
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 0%
Chevron down
Mostly cloudy

RealFeel Shade™10°

WindN 15 mph

Air QualityExcellent

Max UV Index0.5 (Low)

Wind Gusts27 mph

Humidity77%

Indoor Humidity30% (Dry)

Dew Point19° F

AccuLumen Brightness Index™3 (Dull)

Cloud Cover89%

Visibility10 mi

Cloud Ceiling1900 ft

12 PM

24°
RealFeel® 10°
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 0%
Chevron down
Mostly cloudy

RealFeel Shade™8°

WindN 15 mph

Air QualityExcellent

Max UV Index1.4 (Low)

Wind Gusts25 mph

Humidity73%

Indoor Humidity28% (Very Dry)

Dew Point16° F

AccuLumen Brightness Index™4 (Dull)

Cloud Cover80%

Visibility10 mi

Cloud Ceiling30000 ft

1 PM

22°
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 0%
Chevron down
Intermittent clouds

RealFeel Shade™6°

WindN 14 mph

Air QualityExcellent

Max UV Index1.5 (Low)

Wind Gusts23 mph

Humidity67%

Indoor Humidity26% (Very Dry)

Dew Point13° F

AccuLumen Brightness Index™5 (Medium)

Cloud Cover72%

Visibility10 mi

Cloud Ceiling30000 ft

2 PM

21°
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 0%
Chevron down
Intermittent clouds

RealFeel Shade™7°

WindN 13 mph

Air QualityExcellent

Max UV Index1.3 (Low)

Wind Gusts22 mph

Humidity63%

Indoor Humidity24% (Very Dry)

Dew Point11° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover68%

Visibility10 mi

Cloud Ceiling30000 ft

3 PM

20°
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 0%
Chevron down
Intermittent clouds

RealFeel Shade™8°

WindN 12 mph

Air QualityExcellent

Max UV Index0.8 (Low)

Wind Gusts20 mph

Humidity62%

Indoor Humidity23% (Very Dry)

Dew Point9° F

AccuLumen Brightness Index™4 (Dull)

Cloud Cover65%

Visibility10 mi

Cloud Ceiling30000 ft

4 PM

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 0%
Chevron down
Intermittent clouds

RealFeel Shade™6°

WindN 10 mph

Air QualityExcellent

Max UV Index0.2 (Low)

Wind Gusts18 mph

Humidity62%

Indoor Humidity21% (Very Dry)

Dew Point7° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover61%

Visibility10 mi

Cloud Ceiling23500 ft

5 PM

15°
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 0%
Chevron down
Intermittent clouds

WindN 9 mph

Air QualityExcellent

Wind Gusts18 mph

Humidity65%

Indoor Humidity20% (Very Dry)

Dew Point6° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover74%

Visibility10 mi

Cloud Ceiling23500 ft

6 PM

13°
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 0%
Chevron down
Mostly cloudy

WindN 8 mph

Air QualityExcellent

Wind Gusts17 mph

Humidity69%

Indoor Humidity19% (Very Dry)

Dew Point5° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover86%

Visibility10 mi

Cloud Ceiling18200 ft

7 PM

11°
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 0%
Chevron down
Cloudy

WindNNE 8 mph

Air QualityExcellent

Wind Gusts17 mph

Humidity70%

Indoor Humidity18% (Extremely Dry)

Dew Point3° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover99%

Visibility10 mi

Cloud Ceiling18200 ft

8 PM

10°
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 0%
Chevron down
Cloudy

WindNNE 7 mph

Air QualityExcellent

Wind Gusts17 mph

Humidity70%

Indoor Humidity17% (Extremely Dry)

Dew Point2° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling18200 ft

9 PM

9°
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 0%
Chevron down
Cloudy

WindNNE 7 mph

Air QualityExcellent

Wind Gusts17 mph

Humidity70%

Indoor Humidity17% (Extremely Dry)

Dew Point1° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling18200 ft

10 PM

9°
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 0%
Chevron down
Cloudy

WindNE 7 mph

Air QualityExcellent

Wind Gusts17 mph

Humidity70%

Indoor Humidity17% (Extremely Dry)

Dew Point1° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling18200 ft

11 PM

9°
RealFeel® 1°
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 0%
Chevron down
Cloudy

WindNE 7 mph

Air QualityExcellent

Wind Gusts17 mph

Humidity71%

Indoor Humidity17% (Extremely Dry)

Dew Point2° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling18200 ft

Further Ahead

Tomorrow

Saturday

Daily

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Weather Forecasts

Dangerous storm to flood California through Christmas

2 hours ago

Winter Weather

Late-week snowstorm looms for part of Northeast, including NYC

1 hour ago

Weather News

State of emergency issued in Southern California as storm blasts state

14 hours ago

Winter Weather

Arctic blast to bring waves of dangerous cold to Midwest, Northeast

1 hour ago

Weather Forecasts

Warmest Christmas on record likely in part of US

1 hour ago

 More Stories

Featured Stories

Recreation

Hiker’s body recovered from California's tallest mountain after storms

20 hours ago

Recreation

Big Bend National Park asks visitors to stop treating it like a ‘trash...

22 hours ago

Astronomy

The upsidedown moon: Why the moon looks odd on the other side of the w...

1 day ago

Weather News

NPS seeking tips to help find missing 26-year-old woman

2 days ago

Astronomy

These are the top 3 astronomy stories of 2025

2 days ago
World North America Canada Ontario Mount St. Louis

Weather Near Mount St. Louis:

  • 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 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

...

...

...