Go Back
  • For Business
  • |
  • Warnings
  • Data Suite
  • Newsletters
  • Advertising
  • Superior Accuracy™
Dangerous heat wave to expand east early this week, affecting 170 million people. Details here Chevron right

Harmon, IL

79°F
Location Chevron down
Location News Videos
Use Current Location
Recent

Harmon

Illinois

79°
No results found.
Try searching for a city, zip code or point of interest.
settings
Harmon, 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

Newsletters

Advertising

Superior Accuracy™

Video

Winter Center

Today Hourly

Daily

Radar MinuteCast Monthly Air Quality Health & Activities
Heat Advisory

June 23 - August 6

Mon 6/23

94° /71°
6%
Breezy this morning; otherwise, hot with plenty of sunshine; stay hydrated when outside in the heat
alerts

Heat Advisory

10:00 AM Saturday - 12:00 AM Tuesday

RealFeel®101°

RealFeel Shade™97°

Max UV Index11 (Extreme)

WindSW 13 mph

Tue 6/24

90° /72°
55%
Hot and humid with increasing cloudiness; a heavy thunderstorm in the afternoon; thunderstorms can bring localized damaging wind gusts

RealFeel®98°

RealFeel Shade™95°

Max UV Index9 (Very High)

WindWSW 7 mph

Wed 6/25

85° /73°
80%
Periods of clouds and sunshine with a thunderstorm; very humid; thunderstorms can bring localized damaging wind gusts

RealFeel®96°

RealFeel Shade™94°

Max UV Index6 (High)

WindSSE 6 mph

Thu 6/26

91° /70°
40%
Partly sunny, hot and humid with a thunderstorm in parts of the area; possible danger of dehydration and heatstroke while doing strenuous activities

RealFeel®98°

RealFeel Shade™94°

Max UV Index11 (Extreme)

WindSW 9 mph

Fri 6/27

86° /69°
68%
Mostly cloudy and uncomfortably humid; an afternoon thunderstorm

RealFeel®95°

RealFeel Shade™92°

Max UV Index5 (Moderate)

WindW 8 mph

Sat 6/28

87° /69°
42%
Cloudy and humid with a thunderstorm in parts of the area

RealFeel®93°

RealFeel Shade™89°

Max UV Index6 (High)

WindWSW 8 mph

Sun 6/29

88° /68°
65%
Mostly cloudy, warm and humid; occasional morning rain and a thunderstorm followed by a thunderstorm in spots in the afternoon

RealFeel®95°

RealFeel Shade™91°

Max UV Index5 (Moderate)

WindWSW 8 mph

Mon 6/30

86° /66°
43%
Humid with times of clouds and sun; a thunderstorm in spots in the morning followed by a shower in spots in the afternoon

RealFeel®93°

RealFeel Shade™85°

Max UV Index10 (Very High)

WindNW 7 mph

Tue 7/1

84° /63°
1%
Mostly sunny and humid

RealFeel®89°

RealFeel Shade™81°

Max UV Index10 (Very High)

WindNW 7 mph

Wed 7/2

85° /61°
5%
Partly sunny and humid

RealFeel®93°

RealFeel Shade™85°

Max UV Index7 (High)

WindE 2 mph

Thu 7/3

83° /65°
1%
Sunshine and humid

RealFeel®91°

RealFeel Shade™82°

Max UV Index10 (Very High)

WindSSE 6 mph

Fri 7/4

82° /65°
1%
Humid with plenty of sunshine

RealFeel®91°

RealFeel Shade™82°

Max UV Index10 (Very High)

WindW 6 mph

Sat 7/5

83° /63°
5%
Humid with clouds followed by a brightening sky

RealFeel®88°

RealFeel Shade™82°

Max UV Index6 (High)

WindW 5 mph

Sun 7/6

90° /66°
20%
Mostly sunny and hot

RealFeel®94°

RealFeel Shade™88°

Max UV Index10 (Very High)

WindENE 7 mph

Mon 7/7

78° /59°
5%
Plenty of sun

RealFeel®85°

RealFeel Shade™76°

Max UV Index10 (Very High)

WindESE 5 mph

Tue 7/8

79° /63°
25%
Mostly cloudy

RealFeel®80°

RealFeel Shade™79°

Max UV Index7 (High)

WindSE 5 mph

Wed 7/9

83° /68°
5%
Humid with plenty of sunshine

RealFeel®91°

RealFeel Shade™88°

Max UV Index10 (Very High)

WindS 8 mph

Thu 7/10

87° /67°
20%
Sunshine and humid

RealFeel®94°

RealFeel Shade™87°

Max UV Index10 (Very High)

WindNE 7 mph

Fri 7/11

86° /69°
25%
Clouds to start, then sunshine returns and humid

RealFeel®93°

RealFeel Shade™90°

Max UV Index10 (Very High)

WindSW 10 mph

Sat 7/12

85° /68°
70%
Overcast and humid; afternoon showers and thunderstorms

RealFeel®89°

RealFeel Shade™89°

Max UV Index3 (Moderate)

WindSSW 8 mph

Sun 7/13

82° /67°
5%
Humid with plenty of sunshine

RealFeel®89°

RealFeel Shade™83°

Max UV Index10 (Very High)

WindNNW 6 mph

Mon 7/14

81° /67°
25%
Becoming cloudy and humid

RealFeel®83°

RealFeel Shade™83°

Max UV Index5 (Moderate)

WindSE 7 mph

Tue 7/15

80° /66°
65%
Mostly cloudy and humid; a couple of afternoon showers and a thunderstorm

RealFeel®88°

RealFeel Shade™88°

Max UV Index5 (Moderate)

WindWSW 5 mph

Wed 7/16

79° /67°
65%
A couple of showers in the morning; otherwise, humid with considerable cloudiness

RealFeel®84°

RealFeel Shade™83°

Max UV Index2 (Low)

WindENE 7 mph

Thu 7/17

78° /67°
70%
Considerable cloudiness and humid with showers and thunderstorms becoming more widespread

RealFeel®81°

RealFeel Shade™81°

Max UV Index2 (Low)

WindE 8 mph

Fri 7/18

80° /66°
65%
A couple of morning showers and a thunderstorm; otherwise, remaining cloudy and humid

RealFeel®88°

RealFeel Shade™88°

Max UV Index2 (Low)

WindSSW 5 mph

Sat 7/19

80° /68°
25%
Humid with times of clouds and sun

RealFeel®89°

RealFeel Shade™86°

Max UV Index10 (Very High)

WindSW 4 mph

Sun 7/20

85° /69°
39%
Partly sunny and uncomfortably humid; a thunderstorm in spots in the afternoon

RealFeel®97°

RealFeel Shade™94°

Max UV Index10 (Very High)

WindSSW 6 mph

Mon 7/21

86° /68°
25%
Uncomfortably humid with increasing cloudiness

RealFeel®95°

RealFeel Shade™94°

Max UV Index7 (High)

WindWNW 2 mph

Tue 7/22

84° /67°
20%
Humid with more sun than clouds

RealFeel®90°

RealFeel Shade™85°

Max UV Index10 (Very High)

WindNW 7 mph

Wed 7/23

81° /67°
20%
Humid with partial sunshine

RealFeel®88°

RealFeel Shade™83°

Max UV Index9 (Very High)

WindS 4 mph

Thu 7/24

82° /66°
55%
A passing morning shower; otherwise, humid with some sun

RealFeel®90°

RealFeel Shade™84°

Max UV Index10 (Very High)

WindNNE 5 mph

Fri 7/25

79° /62°
5%
Less humid with plenty of sun

RealFeel®83°

RealFeel Shade™77°

Max UV Index10 (Very High)

WindNE 8 mph

Sat 7/26

79° /60°
25%
Clouds and intervals of sunshine

RealFeel®78°

RealFeel Shade™78°

Max UV Index5 (Moderate)

WindE 5 mph

Sun 7/27

80° /63°
5%
Plenty of sun

RealFeel®85°

RealFeel Shade™78°

Max UV Index9 (Very High)

WindENE 5 mph

Mon 7/28

81° /65°
20%
Plenty of sunshine

RealFeel®88°

RealFeel Shade™82°

Max UV Index9 (Very High)

WindE 4 mph

Tue 7/29

83° /67°
20%
Mostly sunny and humid

RealFeel®91°

RealFeel Shade™86°

Max UV Index9 (Very High)

WindWNW 4 mph

Wed 7/30

86° /67°
25%
Mostly cloudy and humid

RealFeel®93°

RealFeel Shade™89°

Max UV Index9 (Very High)

WindSSE 6 mph

Thu 7/31

86° /69°
25%
Humid with clouds and sunshine

RealFeel®88°

RealFeel Shade™87°

Max UV Index4 (Moderate)

WindSSW 10 mph

Fri 8/1

88° /67°
25%
Warm and humid with clouds and sunshine

RealFeel®87°

RealFeel Shade™85°

Max UV Index6 (High)

WindNNW 9 mph

Sat 8/2

82° /63°
25%
Less humid with clouds and sun

RealFeel®87°

RealFeel Shade™81°

Max UV Index9 (Very High)

WindENE 6 mph

Sun 8/3

78° /61°
25%
Turning cloudy

RealFeel®84°

RealFeel Shade™77°

Max UV Index9 (Very High)

WindE 7 mph

Mon 8/4

83° /67°
25%
Mostly sunny and humid

RealFeel®92°

RealFeel Shade™88°

Max UV Index9 (Very High)

WindWNW 2 mph

Tue 8/5

82° /63°
40%
Partly sunny and humid with a thunderstorm around

RealFeel®89°

RealFeel Shade™84°

Max UV Index9 (Very High)

WindSW 6 mph

Wed 8/6

81° /61°
65%
Humid with sun and some clouds; a couple of showers and a thunderstorm in the afternoon

RealFeel®88°

RealFeel Shade™83°

Max UV Index9 (Very High)

WindSW 10 mph

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Weather Forecasts

Dangerous heat wave to envelop 170 million Americans through late June

5 hours ago

Severe Weather

Severe storms to continue riding edge of heat dome into new week

3 hours ago

Weather News

Coast Guard ends search after 6 killed in Lake Tahoe boat capsizing

3 hours ago

Astronomy

NASA raises chance for asteroid to hit moon

3 days ago

Weather News

5 ways people cooled off in the summer before air conditioning

4 days ago

More Stories

Featured Stories

Astronomy

Summer solstice: Everything to know about the year's longest day

3 days ago

Health

‘Nimbus’ COVID-19 variant arrives in U.S. after China surge

3 days ago

Severe Weather

Rare high-elevation tornado confirmed at Pikes Peak

4 days ago

Weather News

First methane-powered sea spiders found crawling on the ocean floor

4 days ago

Weather News

‘Dragon Man’ DNA revelation puts a face to group of ancient humans

2 days ago

World North America United States Illinois Harmon

Weather Near Harmon:

  • Belvidere, IL
  • Freeport, IL
  • Rockford, 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 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

...

...

...