Go Back
  • For Business
  • |
  • Warnings
  • Data Suite
  • Forensics
  • Advertising
  • Superior Accuracy™
Flash floods kill 2 in New Jersey, strand subway riders in NYC Chevron right
Tropical rainstorm soaks Florida, could strengthen in Gulf before targeting Louisiana Chevron right

St Charles, IL

77°F
Location Chevron down
Location News Videos
Use Current Location
Recent

St Charles

Illinois

77°
No results found.
Try searching for a city, zip code or point of interest.
settings
St Charles, 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 Hourly

Daily

 Radar MinuteCast Monthly Air Quality Health & Activities
Air Quality Alert

July 16 - August 29

Wed 7/16

90° /69°
78%
Periods of clouds and sunshine with a couple of thunderstorms, especially late; hot and humid
alerts

Air Quality Alert

12:02 PM Monday - 12:00 AM Thursday

RealFeel®99°

RealFeel Shade™93°

Max UV Index9 (Very High)

WindSSW 10 mph

Thu 7/17

75° /56°
80%
Mostly cloudy with a shower

RealFeel®77°

RealFeel Shade™74°

Max UV Index3 (Moderate)

WindN 8 mph

Fri 7/18

81° /64°
2%
Mainly cloudy, warmer and less humid

RealFeel®90°

RealFeel Shade™81°

Max UV Index8 (Very High)

WindSSE 2 mph

Sat 7/19

81° /68°
80%
Cloudy and humid with a thunderstorm in the area

RealFeel®85°

RealFeel Shade™85°

Max UV Index2 (Low)

WindSSW 8 mph

Sun 7/20

80° /63°
80%
Mostly cloudy and humid with a thunderstorm in the area

RealFeel®87°

RealFeel Shade™80°

Max UV Index6 (High)

WindNE 7 mph

Mon 7/21

80° /69°
42%
Mostly cloudy and humid; a thunderstorm in parts of the area in the afternoon

RealFeel®88°

RealFeel Shade™83°

Max UV Index4 (Moderate)

WindSE 4 mph

Tue 7/22

87° /70°
40%
Watch for a strong thunderstorm in the morning; humid with variable cloudiness

RealFeel®99°

RealFeel Shade™92°

Max UV Index7 (High)

WindSSW 7 mph

Wed 7/23

91° /72°
4%
Hot and very humid with plenty of sunshine

RealFeel®101°

RealFeel Shade™97°

Max UV Index10 (Very High)

WindSW 10 mph

Thu 7/24

88° /69°
1%
Humid with plenty of sunshine

RealFeel®101°

RealFeel Shade™91°

Max UV Index10 (Very High)

WindNNW 7 mph

Fri 7/25

84° /67°
6%
Humid with a blend of sun and clouds

RealFeel®97°

RealFeel Shade™92°

Max UV Index9 (Very High)

WindNNW 5 mph

Sat 7/26

81° /64°
19%
Decreasing clouds and humid

RealFeel®95°

RealFeel Shade™86°

Max UV Index9 (Very High)

WindN 5 mph

Sun 7/27

83° /66°
13%
Humid with considerable cloudiness

RealFeel®91°

RealFeel Shade™89°

Max UV Index7 (High)

WindE 7 mph

Mon 7/28

86° /67°
75%
Periods of rain in the morning; otherwise, humid with considerable cloudiness

RealFeel®94°

RealFeel Shade™91°

Max UV Index4 (Moderate)

WindESE 5 mph

Tue 7/29

84° /64°
5%
Sunny and humid

RealFeel®89°

RealFeel Shade™83°

Max UV Index9 (Very High)

WindW 8 mph

Wed 7/30

80° /67°
56%
Cloudy and humid; a couple of afternoon showers

RealFeel®88°

RealFeel Shade™88°

Max UV Index3 (Moderate)

WindNW 2 mph

Thu 7/31

81° /66°
25%
Cloudy and humid

RealFeel®87°

RealFeel Shade™87°

Max UV Index3 (Moderate)

WindSW 4 mph

Fri 8/1

85° /66°
65%
Humid with times of clouds and sun; a couple of showers and a thunderstorm in the afternoon

RealFeel®91°

RealFeel Shade™91°

Max UV Index3 (Moderate)

WindW 7 mph

Sat 8/2

83° /62°
60%
Periods of rain

RealFeel®81°

RealFeel Shade™80°

Max UV Index2 (Low)

WindNE 12 mph

Sun 8/3

77° /61°
25%
Mostly cloudy

RealFeel®77°

RealFeel Shade™74°

Max UV Index3 (Moderate)

WindENE 9 mph

Mon 8/4

77° /60°
10%
Mostly sunny

RealFeel®85°

RealFeel Shade™75°

Max UV Index9 (Very High)

WindENE 5 mph

Tue 8/5

78° /60°
25%
Increasing clouds

RealFeel®83°

RealFeel Shade™77°

Max UV Index8 (Very High)

WindENE 4 mph

Wed 8/6

78° /61°
25%
Some sun, then increasing clouds

RealFeel®81°

RealFeel Shade™77°

Max UV Index8 (Very High)

WindS 5 mph

Thu 8/7

77° /66°
65%
Cloudy and humid; a couple of showers and a thunderstorm in the afternoon

RealFeel®79°

RealFeel Shade™79°

Max UV Index2 (Low)

WindSSW 8 mph

Fri 8/8

79° /66°
56%
A passing morning shower; otherwise, humid with intervals of clouds and sunshine

RealFeel®81°

RealFeel Shade™79°

Max UV Index4 (Moderate)

WindNNE 7 mph

Sat 8/9

78° /65°
41%
Humid with times of clouds and sun; a thundershower in spots in the afternoon

RealFeel®84°

RealFeel Shade™79°

Max UV Index8 (Very High)

WindNNE 5 mph

Sun 8/10

78° /64°
25%
Mostly cloudy

RealFeel®80°

RealFeel Shade™80°

Max UV Index4 (Moderate)

WindNNE 4 mph

Mon 8/11

79° /65°
10%
Sunshine

RealFeel®87°

RealFeel Shade™80°

Max UV Index8 (Very High)

WindS 5 mph

Tue 8/12

82° /66°
25%
Humid with times of clouds and sun

RealFeel®85°

RealFeel Shade™84°

Max UV Index4 (Moderate)

WindSSW 7 mph

Wed 8/13

84° /66°
10%
Mostly sunny and humid

RealFeel®89°

RealFeel Shade™86°

Max UV Index8 (Very High)

WindSSW 8 mph

Thu 8/14

85° /67°
25%
Partly sunny and humid

RealFeel®92°

RealFeel Shade™90°

Max UV Index4 (Moderate)

WindSSW 12 mph

Fri 8/15

82° /67°
65%
Humid with clouds and breaks of sun; a couple of showers and a thunderstorm in the afternoon

RealFeel®90°

RealFeel Shade™90°

Max UV Index5 (Moderate)

WindW 6 mph

Sat 8/16

85° /66°
5%
Humid with plenty of sunshine

RealFeel®93°

RealFeel Shade™85°

Max UV Index8 (Very High)

WindNNE 5 mph

Sun 8/17

82° /66°
5%
Humid with plenty of sun

RealFeel®89°

RealFeel Shade™86°

Max UV Index8 (Very High)

WindSE 6 mph

Mon 8/18

85° /67°
10%
Abundant sunshine and humid

RealFeel®94°

RealFeel Shade™91°

Max UV Index8 (Very High)

WindS 7 mph

Tue 8/19

86° /67°
5%
Brilliant sunshine, warm and humid

RealFeel®94°

RealFeel Shade™90°

Max UV Index8 (Very High)

WindSSW 8 mph

Wed 8/20

84° /66°
65%
Cloudy and humid; a couple of afternoon showers and a thunderstorm

RealFeel®90°

RealFeel Shade™90°

Max UV Index2 (Low)

WindSSW 7 mph

Thu 8/21

85° /67°
25%
Uncomfortably humid with sun followed by increasing clouds

RealFeel®99°

RealFeel Shade™96°

Max UV Index8 (Very High)

WindS 4 mph

Fri 8/22

85° /67°
20%
Partly sunny, warm and very humid

RealFeel®99°

RealFeel Shade™97°

Max UV Index7 (High)

WindSSE 4 mph

Sat 8/23

84° /66°
25%
Cloudy, warm and very humid

RealFeel®92°

RealFeel Shade™92°

Max UV Index2 (Low)

WindS 6 mph

Sun 8/24

86° /67°
5%
Warm and humid with plenty of sunshine

RealFeel®91°

RealFeel Shade™88°

Max UV Index7 (High)

WindSSW 8 mph

Mon 8/25

86° /67°
20%
Partly sunny, warm and humid

RealFeel®98°

RealFeel Shade™90°

Max UV Index7 (High)

WindS 2 mph

Tue 8/26

85° /66°
25%
Warm and humid with periods of clouds and sunshine

RealFeel®98°

RealFeel Shade™90°

Max UV Index7 (High)

WindE 4 mph

Wed 8/27

84° /67°
5%
Sunny, warm and very humid

RealFeel®99°

RealFeel Shade™90°

Max UV Index7 (High)

WindENE 4 mph

Thu 8/28

85° /66°
39%
Partly sunny, remaining warm and very humid; a thunderstorm in spots in the afternoon

RealFeel®99°

RealFeel Shade™94°

Max UV Index7 (High)

WindNNE 2 mph

Fri 8/29

76° /57°
55%
Times of clouds and sun with a passing shower in the afternoon

RealFeel®75°

RealFeel Shade™72°

Max UV Index3 (Moderate)

WindENE 12 mph

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Weather News

Inside the grueling recovery effort after Texas’ deadly flood

14 hours ago

Weather Forecasts

Flood-weary Texas finally drying out, but near 100-degree heat looms

11 hours ago

Hurricane

Tropical Rainstorm to drench Florida, Gulf Coast

11 hours ago

Weather News

Grand Canyon fires force closures

2 hours ago

Weather Forecasts

Flash flood dangers far from over as storms reload across US

12 hours ago

 More Stories

Featured Stories

Astronomy

Noctilucent clouds shimmer in summer sky

1 day ago

Recreation

Yellowstone’s landscape shifts again with discovery of new hot pool

1 day ago

Weather News

Orcas are bringing humans gifts of food – but why?

4 days ago

Weather News

Giant shoes found spark mystery around the soldiers of ancient Rome

1 day ago

Weather News

It’s not just humans – chimpanzees also like to follow trends

1 day ago
World North America United States Illinois St Charles

Weather Near St Charles:

  • 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 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

...

...

...