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

Round Lake, Ontario

36°F
Location Chevron down
Location News Videos
Use Current Location
Recent

Round Lake

Ontario

36°
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
Round Lake, 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

View hourly forecasts 10-days ahead

Activate Your Premium+ Subscription

Chevron right

WinterCast

Little to no accumulation

Sun, 4/19, 5:00 PM - Sun, 4/19, 6:00 PM

Snow

2 AM

35°
RealFeel® 28°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 37%
Chevron down
Mostly cloudy

WindWNW 8 mph

Air QualityExcellent

Wind Gusts18 mph

Humidity77%

Indoor Humidity37% (Dry)

Dew Point28° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover86%

Visibility10 mi

Cloud Ceiling20000 ft

3 AM

34°
RealFeel® 26°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 44%
Chevron down
Mostly cloudy w/ showers

WindWNW 8 mph

Air QualityExcellent

Wind Gusts20 mph

Humidity75%

Indoor Humidity36% (Dry)

Dew Point27° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover59%

Rain0.01 in

Visibility10 mi

Cloud Ceiling10000 ft

4 AM

33°
RealFeel® 28°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 40%
Chevron down
Partly cloudy

WindWNW 7 mph

Air QualityExcellent

Wind Gusts17 mph

Humidity71%

Indoor Humidity34% (Dry)

Dew Point25° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

5 AM

33°
RealFeel® 28°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 40%
Chevron down
Partly cloudy

WindWNW 7 mph

Air QualityExcellent

Wind Gusts16 mph

Humidity70%

Indoor Humidity34% (Dry)

Dew Point24° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

6 AM

32°
RealFeel® 26°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 44%
Chevron down
Partly cloudy w/ showers

WindWNW 6 mph

Air QualityExcellent

Wind Gusts16 mph

Humidity68%

Indoor Humidity33% (Dry)

Dew Point23° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover45%

Rain0.01 in

Visibility10 mi

Cloud Ceiling30000 ft

7 AM

32°
RealFeel® 29°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 40%
Chevron down
Partly sunny

RealFeel Shade™29°

WindWNW 7 mph

Air QualityExcellent

Max UV Index0.7 (Low)

Wind Gusts16 mph

Humidity66%

Indoor Humidity32% (Dry)

Dew Point22° F

AccuLumen Brightness Index™4 (Dull)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

8 AM

34°
RealFeel® 33°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 0%
Chevron down
Partly sunny

RealFeel Shade™29°

WindWNW 7 mph

Air QualityExcellent

Max UV Index1.6 (Low)

Wind Gusts17 mph

Humidity57%

Indoor Humidity31% (Dry)

Dew Point20° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

9 AM

37°
RealFeel® 36°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 0%
Chevron down
Partly sunny

RealFeel Shade™31°

WindWNW 8 mph

Air QualityExcellent

Max UV Index2.5 (Low)

Wind Gusts18 mph

Humidity48%

Indoor Humidity30% (Dry)

Dew Point19° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

10 AM

39°
RealFeel® 39°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 0%
Chevron down
Partly sunny

RealFeel Shade™33°

WindW 8 mph

Air QualityExcellent

Max UV Index3.7 (Moderate)

Wind Gusts22 mph

Humidity41%

Indoor Humidity29% (Very Dry)

Dew Point17° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

11 AM

41°
RealFeel® 41°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 0%
Chevron down
Partly sunny

RealFeel Shade™34°

WindW 9 mph

Air QualityFair

Max UV Index4.8 (Moderate)

Wind Gusts24 mph

Humidity36%

Indoor Humidity28% (Very Dry)

Dew Point16° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover39%

Visibility10 mi

Cloud Ceiling30000 ft

12 PM

42°
RealFeel® 43°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 0%
Chevron down
Partly sunny

RealFeel Shade™35°

WindW 10 mph

Air QualityFair

Max UV Index6.1 (High)

Wind Gusts27 mph

Humidity33%

Indoor Humidity27% (Very Dry)

Dew Point15° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

1 PM

43°
RealFeel® 44°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 2%
Chevron down
Partly sunny

RealFeel Shade™35°

WindW 12 mph

Air QualityFair

Max UV Index6.7 (High)

Wind Gusts29 mph

Humidity32%

Indoor Humidity27% (Very Dry)

Dew Point15° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

2 PM

43°
RealFeel® 43°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 22%
Chevron down
Partly sunny

RealFeel Shade™35°

WindW 12 mph

Air QualityFair

Max UV Index6.1 (High)

Wind Gusts29 mph

Humidity31%

Indoor Humidity27% (Very Dry)

Dew Point15° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

3 PM

44°
RealFeel® 42°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 22%
Chevron down
Partly sunny

RealFeel Shade™35°

WindW 12 mph

Air QualityFair

Max UV Index4.8 (Moderate)

Wind Gusts30 mph

Humidity31%

Indoor Humidity27% (Very Dry)

Dew Point15° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

4 PM

43°
RealFeel® 39°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 27%
Chevron down
Partly sunny

RealFeel Shade™34°

WindW 12 mph

Air QualityFair

Max UV Index3.7 (Moderate)

Wind Gusts30 mph

Humidity33%

Indoor Humidity27% (Very Dry)

Dew Point15° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover35%

Visibility10 mi

Cloud Ceiling30000 ft

5 PM

41°
RealFeel® 35°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 57%
Chevron down
Partly sunny w/ flurries

RealFeel Shade™31°

WindW 12 mph

Air QualityFair

Max UV Index2.5 (Low)

Wind Gusts30 mph

Humidity35%

Indoor Humidity27% (Very Dry)

Dew Point15° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover26%

Snowtrace

Visibility10 mi

Cloud Ceiling30000 ft

6 PM

40°
RealFeel® 34°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 47%
Chevron down
Mostly sunny

RealFeel Shade™32°

WindW 12 mph

Air QualityFair

Max UV Index1.6 (Low)

Wind Gusts29 mph

Humidity36%

Indoor Humidity27% (Very Dry)

Dew Point15° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

7 PM

38°
RealFeel® 31°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 28%
Chevron down
Mostly sunny

RealFeel Shade™31°

WindW 10 mph

Air QualityFair

Max UV Index0.7 (Low)

Wind Gusts27 mph

Humidity38%

Indoor Humidity27% (Very Dry)

Dew Point14° F

AccuLumen Brightness Index™4 (Dull)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

8 PM

35°
RealFeel® 28°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 5%
Chevron down
Partly sunny

RealFeel Shade™28°

WindWNW 9 mph

Air QualityFair

Max UV Index0.0 (Low)

Wind Gusts23 mph

Humidity42%

Indoor Humidity27% (Very Dry)

Dew Point14° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover46%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

32°
RealFeel® 25°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 5%
Chevron down
Partly cloudy

WindWNW 8 mph

Air QualityFair

Wind Gusts21 mph

Humidity49%

Indoor Humidity27% (Very Dry)

Dew Point15° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover46%

Visibility10 mi

Cloud Ceiling30000 ft

10 PM

30°
RealFeel® 24°
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 5%
Chevron down
Partly cloudy

WindWNW 8 mph

Air QualityFair

Wind Gusts20 mph

Humidity54%

Indoor Humidity28% (Very Dry)

Dew Point16° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover46%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

29°
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 5%
Chevron down
Partly cloudy

WindWNW 8 mph

Air QualityFair

Wind Gusts20 mph

Humidity57%

Indoor Humidity28% (Very Dry)

Dew Point16° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover46%

Visibility10 mi

Cloud Ceiling30000 ft

Hourly Weather Forecast for Round Lake

AccuWeather's hourly forecast for Round Lake provides hour-by-hour temperatures, RealFeel® Temperature, and precipitation probability through the next 10 days. The current hour shows 35° with a RealFeel® of 28°, mostly cloudy with a 37% chance of precipitation. Each hourly forecast includes wind speed, humidity, air quality, UV index, and the AccuLumen Brightness Index™, AccuWeather's measure of perceived outdoor light intensity. Forecasts are generated by proprietary systems developed by AccuWeather meteorologists since 1962.

Further Ahead

Tomorrow

Tuesday

10-Day

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Severe Weather

Severe weather, tornado risk on Saturday from New York to Tennessee

8 hours ago

Winter Weather

Cars are emerging from a massive snow pile months after winter storms

2 days ago

Winter Weather

Grab the jackets again as cold air, freezes return to the Northeast

10 hours ago

Weather Forecasts

Storm to to bring California more rain, thunder and Sierra Nevada snow

10 hours ago

Severe Weather

1st lightning death of 2026 reported after Wisconsin storm

1 day ago

 More Stories

Featured Stories

Astronomy

Lyrids 2026: How to see the 1st meteor shower since January

19 hours ago

Weather News

Evacuations, rescues underway as flooding continues in Wisconsin, Mich...

1 day ago

Weather News

Falling ice chunk crashes through roof, lands on living room couch

2 days ago

Weather News

7-month-old dies after being found in hot car in Tennessee

1 day ago

Weather News

114 years later: How weather helped seal the Titanic’s fate

3 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 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

...

...

...