Go Back
  • For Business
  • |
  • Warnings
  • Data Suite
  • Forensics
  • Advertising
  • Superior Accuracy™
Record-shattering March scorcher to bring summerlike heat to Southwest. See how hot it will get. Chevron right

Caseyville, IL

20°F
Location Chevron down
Location News Videos
Use Current Location
Recent

Caseyville

Illinois

20°
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
Caseyville, 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

Unlock extended 90-day forecasts

Activate Your Premium+ Subscription

Chevron right

March 17 - April 15

Tue 3/17

34° /29°
25%
Turning cloudy and cold

RealFeel®36°

RealFeel Shade™33°

Max UV Index5.0 (Moderate)

WindWSW 7 mph

Wed 3/18

64° /43°
2%
Breezy in the morning; otherwise, mostly sunny

RealFeel®65°

RealFeel Shade™62°

Max UV Index5.0 (Moderate)

WindWSW 12 mph

Thu 3/19

73° /43°
25%
Mostly sunny and very warm

RealFeel®74°

RealFeel Shade™70°

Max UV Index5.0 (Moderate)

WindWSW 10 mph

Fri 3/20

78° /51°
0%
Partly sunny and very warm

RealFeel®82°

RealFeel Shade™76°

Max UV Index5.0 (Moderate)

WindSW 4 mph

Sat 3/21

83° /51°
4%
Remaining very warm with plenty of sunshine

RealFeel®85°

RealFeel Shade™81°

Max UV Index5.0 (Moderate)

WindWSW 7 mph

Sun 3/22

71° /36°
6%
Mostly sunny, breezy and warm

RealFeel®70°

RealFeel Shade™67°

Max UV Index5.0 (Moderate)

WindWNW 14 mph

Mon 3/23

52° /37°
7%
Mostly sunny and cooler

RealFeel®53°

RealFeel Shade™46°

Max UV Index6.0 (High)

WindENE 9 mph

Tue 3/24

60° /49°
0%
Partly sunny

RealFeel®63°

RealFeel Shade™59°

Max UV Index6.0 (High)

WindESE 6 mph

Wed 3/25

69° /50°
49%
A shower in spots in the morning; otherwise, after a cloudy start, sunshine returns

RealFeel®69°

RealFeel Shade™65°

Max UV Index6.0 (High)

WindSSE 13 mph

Thu 3/26

57° /33°
79%
Cooler with clouds and breaks of sun; afternoon showers and thunderstorms

RealFeel®64°

RealFeel Shade™58°

Max UV Index6.0 (High)

WindWSW 12 mph

Fri 3/27

57° /35°
0%
Partly sunny

RealFeel®60°

RealFeel Shade™55°

Max UV Index6.0 (High)

WindNE 7 mph

Sat 3/28

59° /46°
70%
A thick cloud cover; a passing morning shower followed by periods of rain in the afternoon

RealFeel®54°

RealFeel Shade™52°

Max UV Index2.0 (Low)

WindENE 10 mph

Sun 3/29

68° /44°
13%
Sun followed by increasing clouds

RealFeel®68°

RealFeel Shade™65°

Max UV Index4.0 (Moderate)

WindSE 8 mph

Mon 3/30

61° /38°
20%
Plenty of sunshine

RealFeel®69°

RealFeel Shade™61°

Max UV Index6.0 (High)

WindSE 5 mph

Tue 3/31

66° /45°
25%
Times of clouds and sun

RealFeel®65°

RealFeel Shade™64°

Max UV Index3.0 (Moderate)

WindS 8 mph

Wed 4/1

65° /45°
63%
Rain

RealFeel®64°

RealFeel Shade™63°

Max UV Index1.0 (Low)

WindSE 7 mph

Thu 4/2

64° /42°
25%
Cloudy

RealFeel®62°

RealFeel Shade™62°

Max UV Index2.0 (Low)

WindNNW 9 mph

Fri 4/3

55° /41°
63%
Cooler with rain

RealFeel®49°

RealFeel Shade™47°

Max UV Index1.0 (Low)

WindNW 12 mph

Sat 4/4

55° /40°
68%
Overcast with periods of rain in the afternoon

RealFeel®55°

RealFeel Shade™54°

Max UV Index5.0 (Moderate)

WindE 7 mph

Sun 4/5

56° /41°
10%
Mostly sunny

RealFeel®60°

RealFeel Shade™52°

Max UV Index7.0 (High)

WindNW 8 mph

Mon 4/6

63° /42°
5%
Brilliant sunshine

RealFeel®71°

RealFeel Shade™63°

Max UV Index7.0 (High)

WindSW 4 mph

Tue 4/7

68° /40°
59%
Cloudy with showers

RealFeel®66°

RealFeel Shade™66°

Max UV Index2.0 (Low)

WindNNE 9 mph

Wed 4/8

56° /39°
25%
Cooler with a thick cloud cover

RealFeel®55°

RealFeel Shade™55°

Max UV Index2.0 (Low)

WindENE 6 mph

Thu 4/9

57° /36°
20%
Mostly sunny

RealFeel®67°

RealFeel Shade™57°

Max UV Index7.0 (High)

WindNNE 5 mph

Fri 4/10

58° /39°
25%
Cloudy

RealFeel®59°

RealFeel Shade™57°

Max UV Index2.0 (Low)

WindS 5 mph

Sat 4/11

58° /43°
20%
Sunny to partly cloudy

RealFeel®62°

RealFeel Shade™56°

Max UV Index7.0 (High)

WindWNW 8 mph

Sun 4/12

59° /37°
25%
Increasing cloudiness

RealFeel®58°

RealFeel Shade™56°

Max UV Index5.0 (Moderate)

WindN 8 mph

Mon 4/13

58° /37°
10%
Sunny

RealFeel®64°

RealFeel Shade™55°

Max UV Index8.0 (Very High)

WindWNW 7 mph

Tue 4/14

59° /38°
10%
Mostly sunny

RealFeel®63°

RealFeel Shade™56°

Max UV Index8.0 (Very High)

WindNNW 7 mph

Wed 4/15

58° /38°
25%
Cloudy

RealFeel®61°

RealFeel Shade™60°

Max UV Index2.0 (Low)

WindSW 2 mph

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

1 hour ago

Winter Weather

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

1 hour ago

Weather Forecasts

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

6 hours ago

Astronomy

See it: Bright daytime meteor triggers sonic boom over Cleveland

48 minutes ago

Weather Forecasts

Hawaii Kona storm sweeps state with 135-mph winds, 44 inches of rain

22 hours ago

 More Stories

Featured Stories

Astronomy

Moon project delays among barrage of challenges for NASA

3 days ago

Winter Weather

Nine states had their warmest winter ever recorded

5 days ago

Weather News

'Doomsday fish' rescued after washing ashore in Mexico

4 days ago

Recreation

'Quicksand alert' issued at National Park Service site

5 days ago

Severe Weather

Why nighttime tornadoes are 2.5 times more deadly

6 days ago
World North America United States Illinois Caseyville

Weather Near Caseyville:

  • O'Fallon, MO
  • St. Charles, MO
  • St. Louis, MO
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

...

...

...