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

Mount St. Louis, Ontario

32°F
Location Chevron down
Location News Videos
Use Current Location
Recent

Mount St. Louis

Ontario

32°
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
Mount St. Louis, 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
Sunday, April 5

Current Weather

9:15 PM

32°F
Light snow
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
RealFeel®
13°
Wind
WNW 24 mph
Wind Gusts
35 mph
Humidity
82%
Indoor Humidity
36% (Dry)
Dew Point
27° F
Pressure
↔ 29.94 in
Cloud Cover
100%
Visibility
4 mi
Cloud Ceiling
100 ft

Night

4/5
29°Lo
RealFeel® 12°
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
Windy this evening with intermittent snow and flurries with little or no accumulation; cloudy

WindWNW 14 mph

Wind Gusts35 mph

Probability of Precipitation65%

Probability of Thunderstorms0%

Precipitation0.01 in

Snow0.20 in

Hours of Precipitation4

Cloud Cover96%

Evening

Overnight

Sun & Moon

12 hrs 58 mins
Rise 6:52 AM
Set 7:50 PM
Waning Gibbous
Rise --
Set 8:02 AM

Temperature History

4/5
High
Low
Forecast
38°
29°
Average
45°
26°
Last Year
44°
33°

Current Weather Conditions in Mount St. Louis

Mount St. Louis, Ontario is currently Light snow with a temperature of 32°. The current RealFeel® Temperature is 13° (Very Cold) based on observed conditions including 82% humidity, 100% cloud cover, a UV index of 0, and winds of 24 mph. In shade, the RealFeel Shade™ is 13°. AccuWeather's MinuteCast® provides minute-by-minute precipitation forecasts for Mount St. Louis, powered by forecasting systems and proprietary technology developed by AccuWeather meteorologists since 1962.

Further Ahead

Hourly

10-Day

Monthly

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Weather Forecasts

Slow-moving rainstorm to douse Florida drought, wildfire risk

6 hours ago

Brush fire quickly explodes in size in Southern California

2 days ago 0:26
Live Blog

Artemis II update: Astronauts prepare for moon flyby operations

LATEST ENTRY

Artemis II crew receives historic message ahead of closest moon flyby

5 hours ago

Winter Weather

Cold air returns with snow in Northeast after weekend warmth

6 hours ago

Severe Weather

Third storm in 3 weeks to unleash more rain, flooding in Hawaii

6 hours ago

 More Stories

Featured Stories

Winter Weather

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

2 days ago

Climate

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

3 days ago

Why Easter moves around each year

5 days ago 0:31

Recreation

Grand Canyon water restrictions could close South Rim lodging

3 days ago

Astronomy

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

3 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 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

...

...

...