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

Round Lake, Ontario

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

Round Lake

Ontario

22°
No results found.
Try searching for a city, zip code or point of interest.
settings
Round Lake, 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
Sunday, December 21

Current Weather

1:12 PM

22°F
Cloudy
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
RealFeel Shade™ 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
RealFeel®
10°
RealFeel Shade™
9°
Max UV Index
0.9 (Low)
Wind
WNW 11 mph
Wind Gusts
24 mph
Humidity
70%
Indoor Humidity
26% (Very Dry)
Dew Point
14° F
Pressure
↑ 30.38 in
Cloud Cover
91%
Visibility
16 mi
Cloud Ceiling
34000 ft

Day

12/21
23°Hi
RealFeel® 10°
Bitterly Cold
RealFeel Guide
Bitterly 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 Shade™ 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
Times of clouds and sun with a flurry; breezy
alerts

Yellow Watch - Snow Squall

12:00 AM Sunday - 5:00 PM Sunday

Max UV Index1.0 (Low)

AccuLumen Brightness Index™3 (Dull)

WindWNW 16 mph

Wind Gusts35 mph

Probability of Precipitation40%

Probability of Thunderstorms0%

Precipitation0.00 in

Hours of Precipitation2

Cloud Cover52%

Morning

Afternoon

Night

12/21
4°Lo
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
Mainly clear and colder

WindW 4 mph

Wind Gusts16 mph

Probability of Precipitation25%

Probability of Thunderstorms0%

Precipitation0.00 in

Cloud Cover23%

Evening

Overnight

Sun & Moon

8 hrs 47 mins
Rise 7:47 AM
Set 4:34 PM
Waxing Crescent
Rise 9:26 AM
Set 5:50 PM

Temperature History

12/21
High
Low
Forecast
23°
4°
Average
31°
15°
Last Year
18°
1°

Further Ahead

Hourly

Daily

Monthly

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Winter Weather

Northeastern US will get a mixed bag of precipitation this holiday wee...

35 minutes ago

Weather Forecasts

Christmas week US travelers to face stormy weather on West Coast

28 minutes ago

Weather News

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

1 day ago

Severe Weather

2nd atmospheric river to flood California with firehose of rain

1 hour ago

Winter Weather

What are the snowiest cities in the US?

1 hour ago

 More Stories

Featured Stories

Weather News


Los Angeles wildfires linked to spike in heart, lung emergencies

2 days ago

Astronomy

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

4 days ago

Weather News

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

3 days ago

Weather News

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

3 days ago

Astronomy

Interstellar comet 3I/ATLAS swings by Earth this week

2 days ago
World North America Canada Ontario Round Lake

Weather Near Round Lake:

  • 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

...

...

...