Go Back
  • For Business
  • |
  • Warnings
  • Data Suite
  • Forensics
  • Advertising
  • Superior Accuracy™
100+ F in Phoenix as record-shattering March scorcher intensifies. See how hot it will get. Chevron right

Round Lake, IL

21°F
Location Chevron down
Location News Videos
Use Current Location
Recent

Round Lake

Illinois

21°
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, IL 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

View hourly forecasts 10-days ahead

Activate Your Premium+ Subscription

Chevron right

WinterCast

A coating to an inch

Wed, 3/18, 12:00 AM - Wed, 3/18, 8:00 AM

Snow

4 AM

22°
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 61%
Chevron down
Snow

WindS 17 mph

Air QualityFair

Wind Gusts21 mph

Humidity85%

Indoor Humidity29% (Very Dry)

Dew Point18° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Snow0.22 in

Visibility3 mi

Cloud Ceiling1900 ft

5 AM

23°
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 49%
Chevron down
Cloudy

WindS 17 mph

Air QualityFair

Wind Gusts21 mph

Humidity85%

Indoor Humidity30% (Dry)

Dew Point19° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover99%

Visibility10 mi

Cloud Ceiling2200 ft

6 AM

23°
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 49%
Chevron down
Cloudy

WindS 16 mph

Air QualityFair

Wind Gusts21 mph

Humidity86%

Indoor Humidity30% (Dry)

Dew Point19° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover99%

Visibility10 mi

Cloud Ceiling2500 ft

7 AM

24°
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 55%
Chevron down
Snow

RealFeel Shade™4°

WindS 16 mph

Air QualityFair

Max UV Index0.0 (Low)

Wind Gusts21 mph

Humidity87%

Indoor Humidity31% (Dry)

Dew Point20° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Snow0.23 in

Visibility3 mi

Cloud Ceiling2800 ft

8 AM

24°
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 43%
Chevron down
Cloudy

RealFeel Shade™9°

WindS 15 mph

Air QualityFair

Max UV Index0.2 (Low)

Wind Gusts20 mph

Humidity84%

Indoor Humidity31% (Dry)

Dew Point20° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover94%

Visibility10 mi

Cloud Ceiling3000 ft

9 AM

25°
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 61%
Chevron down
Flurries

RealFeel Shade™9°

WindS 16 mph

Air QualityFair

Max UV Index0.4 (Low)

Wind Gusts20 mph

Humidity85%

Indoor Humidity32% (Dry)

Dew Point21° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover94%

Snowtrace

Visibility10 mi

Cloud Ceiling2900 ft

10 AM

27°
RealFeel® 11°
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 61%
Chevron down
Flurries

RealFeel Shade™11°

WindS 16 mph

Air QualityFair

Max UV Index0.6 (Low)

Wind Gusts20 mph

Humidity82%

Indoor Humidity32% (Dry)

Dew Point22° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover94%

Snowtrace

Visibility10 mi

Cloud Ceiling2800 ft

11 AM

29°
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 40%
Chevron down
Cloudy

RealFeel Shade™14°

WindSSW 16 mph

Air QualityFair

Max UV Index1.1 (Low)

Wind Gusts20 mph

Humidity79%

Indoor Humidity33% (Dry)

Dew Point23° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover94%

Visibility10 mi

Cloud Ceiling4200 ft

12 PM

31°
RealFeel® 19°
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 34%
Chevron down
Cloudy

RealFeel Shade™17°

WindSSW 16 mph

Air QualityFair

Max UV Index1.3 (Low)

Wind Gusts20 mph

Humidity77%

Indoor Humidity34% (Dry)

Dew Point25° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover94%

Visibility10 mi

Cloud Ceiling5600 ft

1 PM

33°
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
rain drop 27%
Chevron down
Cloudy

RealFeel Shade™20°

WindSSW 16 mph

Air QualityFair

Max UV Index1.5 (Low)

Wind Gusts21 mph

Humidity75%

Indoor Humidity35% (Dry)

Dew Point26° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover94%

Visibility10 mi

Cloud Ceiling7100 ft

2 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 14%
Chevron down
Cloudy

RealFeel Shade™25°

WindSW 12 mph

Air QualityFair

Max UV Index1.6 (Low)

Wind Gusts16 mph

Humidity73%

Indoor Humidity37% (Dry)

Dew Point28° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover93%

Visibility10 mi

Cloud Ceiling11100 ft

3 PM

37°
RealFeel® 30°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 14%
Chevron down
Cloudy

RealFeel Shade™28°

WindSW 12 mph

Air QualityFair

Max UV Index1.5 (Low)

Wind Gusts15 mph

Humidity72%

Indoor Humidity38% (Dry)

Dew Point29° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover91%

Visibility10 mi

Cloud Ceiling15100 ft

4 PM

39°
RealFeel® 32°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 14%
Chevron down
Cloudy

RealFeel Shade™30°

WindSW 10 mph

Air QualityFair

Max UV Index1.2 (Low)

Wind Gusts15 mph

Humidity70%

Indoor Humidity38% (Slightly Dry)

Dew Point30° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover90%

Visibility10 mi

Cloud Ceiling19100 ft

5 PM

38°
RealFeel® 32°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 14%
Chevron down
Cloudy

RealFeel Shade™32°

WindSW 9 mph

Air QualityFair

Max UV Index0.9 (Low)

Wind Gusts14 mph

Humidity74%

Indoor Humidity39% (Slightly Dry)

Dew Point30° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover92%

Visibility10 mi

Cloud Ceiling22700 ft

6 PM

36°
RealFeel® 31°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 14%
Chevron down
Cloudy

RealFeel Shade™31°

WindSW 8 mph

Air QualityFair

Max UV Index0.4 (Low)

Wind Gusts13 mph

Humidity81%

Indoor Humidity39% (Slightly Dry)

Dew Point31° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover94%

Visibility10 mi

Cloud Ceiling26400 ft

7 PM

35°
RealFeel® 31°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 11%
Chevron down
Cloudy

RealFeel Shade™31°

WindSW 7 mph

Air QualityFair

Max UV Index0.0 (Low)

Wind Gusts9 mph

Humidity85%

Indoor Humidity40% (Slightly Dry)

Dew Point31° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover94%

Visibility10 mi

Cloud Ceiling30000 ft

8 PM

34°
RealFeel® 32°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 5%
Chevron down
Cloudy

WindWSW 6 mph

Air QualityFair

Wind Gusts6 mph

Humidity88%

Indoor Humidity39% (Slightly Dry)

Dew Point31° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover94%

Visibility10 mi

Cloud Ceiling27900 ft

9 PM

33°
RealFeel® 32°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 5%
Chevron down
Cloudy

WindWSW 5 mph

Air QualityFair

Wind Gusts6 mph

Humidity91%

Indoor Humidity39% (Slightly Dry)

Dew Point30° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover94%

Visibility10 mi

Cloud Ceiling25700 ft

10 PM

31°
RealFeel® 31°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 5%
Chevron down
Cloudy

WindWSW 4 mph

Air QualityFair

Wind Gusts5 mph

Humidity97%

Indoor Humidity39% (Slightly Dry)

Dew Point30° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover94%

Visibility10 mi

Cloud Ceiling23600 ft

11 PM

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

WindWSW 4 mph

Air QualityFair

Wind Gusts5 mph

Humidity95%

Indoor Humidity39% (Slightly Dry)

Dew Point30° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover94%

Visibility10 mi

Cloud Ceiling20500 ft

Further Ahead

Tomorrow

Friday

Daily

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Winter Weather

Snow squalls to create highway dangers in Upper Midwest, Northeast

18 hours ago

Weather Forecasts

Record-shattering March scorcher: 70 million to bake in heat dome

1 hour ago

Winter Weather

Blizzard snarls travel; Midwest city sees biggest snow day since 1889

18 hours ago

Weather Forecasts

Pineapple express to bring flooding in Washington, British Columbia

1 hour ago

Astronomy

See it: Bright daytime meteor triggers sonic boom over Cleveland

16 hours ago

More Stories

Featured Stories

Astronomy

Exoplanet discovery reveals ‘sulfur world’ that smells like rotten egg...

13 hours ago

Health

Two dead, 11 others infected in meningitis outbreak linked to universi...

14 hours ago

Weather News

Watch the rescue: Coast Guard saves snowmobiler stranded on ice

13 hours ago

Astronomy

Moon project delays among barrage of challenges for NASA

4 days ago

Severe Weather

Why nighttime tornadoes are 2.5 times more deadly

1 week ago

World North America United States Illinois Round Lake

Weather Near Round Lake:

  • Chicago, IL
  • Joliet, IL
  • Naperville, IL
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

...

...

...