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Caseyville, IL Weather Forecast & Current Conditions

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Caseyville, IL Weather Maps

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Caseyville Weather Map
UTC Time: 10/3/2026, 02:07
Your Time:
Aeronautical Observation: Automated synoptic observations via NWS Gateway.
Auto-refresh in: 5:02

Caseyville, IL Regional Weather

Expires:202610030300;;439586
ASUS43 KLOT 030201
RWRIL 

ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
900 PM CDT FRI OCT 02 2026

NOTE: "FAIR" INDICATES FEW OR NO CLOUDS BELOW 12,000 FEET WITH NO
SIGNIFICANT WEATHER AND/OR OBSTRUCTIONS TO VISIBILITY.

* THESE STATIONS ARE NOT UNDER NWS QUALITY CONTROL. THEY ALSO MAY NOT
  REPORT WEATHER SUCH AS PRECIPITATION OR FOG.


ILZ079-100>102-030300-
SOUTHWEST ILLINOIS
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
BELLEVILLE     CLEAR     60  51  69 N5        30.20R TC  16           
CAHOKIA*       CLEAR     64  51  62 N7        30.21R TC  18           
$$


SKY/WX - Weather  TMP - Temperature  DP - Dew Point  RH - Humidity
WIND - Wind Direction/Speed  PRES - Barometric Pressure  VSB - Visibility
WCI - Wind Chill Index  E13G22 Wind - East Wind 13 mph/Gusts of 22 mph

Caseyville, IL

Tonight
Clear
52°11°
0%
Saturday
Sunny
75°/ 52° 24°/ 11°
0%
Sunday
Sunny
78°/ 52° 26°/ 11°
0%
Monday
Clear
75°24°
0%
Tuesday
Clear
75°/ 50° 24°/ 10°
0%
Wed Night
Clear
55°13°
0%
Thursday
Clear
55°13°
0%
Friday
Clear
55°13°
0%

Night: Mostly clear. Cooler with lows in the lower 50s. Northeast winds 5 to 10 mph.

Alton, IL

Tonight
Clear
52°11°
0%
Saturday
Sunny
75°/ 52° 24°/ 11°
0%
Sunday
Sunny
78°/ 52° 26°/ 11°
0%
Monday
Clear
75°24°
0%
Tuesday
Clear
75°/ 50° 24°/ 10°
0%
Wed Night
Clear
55°13°
0%
Thursday
Clear
55°13°
0%
Friday
Clear
55°13°
0%

Night: Mostly clear. Cooler with lows in the lower 50s. Northeast winds 5 to 10 mph.

Alton, MO

Tonight
Clear
52°11°
0%
Saturday
Sunny
75°/ 52° 24°/ 11°
0%
Sunday
Sunny
78°/ 52° 26°/ 11°
0%
Monday
Clear
75°24°
0%
Tuesday
Clear
75°/ 50° 24°/ 10°
0%
Wed Night
Clear
55°13°
0%
Thursday
Clear
55°13°
0%
Friday
Clear
55°13°
0%

Night: Mostly clear. Cooler with lows in the lower 50s. Northeast winds 5 to 10 mph.

Monroe County, IL

Tonight
Cloudy
52°11°
0%
Saturday
Sunny
75°/ 52° 24°/ 11°
0%
Sunday
Sunny
78°/ 52° 26°/ 11°
0%
Monday
Sunny
72°/ 45° 22°/ 7°
0%
Tue Night-Wed
Clear
48°9°
0%
Wed Night
Clear
55°13°
0%
Thursday
Clear
55°13°
0%
Friday
Clear
55°13°
0%

Night: Partly cloudy this evening, then becoming mostly clear. Cooler with lows in the lower 50s. Northeast winds 5 to 10 mph.

Centralia, IL

Tonight
Cloudy
52°11°
0%
Saturday
Sunny
75°/ 52° 24°/ 11°
0%
Sunday
Sunny
78°/ 52° 26°/ 11°
0%
Monday
Clear
75°24°
0%
Tue Night
Clear
75°24°
0%
Wednesday
Sunny
82°/ 55° 28°/ 13°
0%
Thursday
Clear
55°13°
0%
Friday
Clear
55°13°
0%

Night: Partly cloudy this evening, then clearing. Cooler with lows in the lower 50s. Northeast winds 5 to 10 mph.

Jefferson County, MO

Tonight
Cloudy
52°11°
0%
Saturday
Sunny
75°/ 52° 24°/ 11°
0%
Sunday
Sunny
78°/ 52° 26°/ 11°
0%
Monday
Sunny
72°/ 45° 22°/ 7°
0%
Tue Night-Wed
Clear
48°9°
0%
Wed Night
Clear
55°13°
0%
Thursday
Clear
55°13°
0%
Friday
Clear
55°13°
0%

Night: Partly cloudy this evening, then becoming mostly clear. Cooler with lows in the lower 50s. Northeast winds 5 to 10 mph.

Litchfield, IL

Tonight
Clear
48°9°
0%
Saturday
Sunny
75°/ 50° 24°/ 10°
0%
Sunday
Sunny
78°/ 50° 26°/ 10°
0%
Monday
Clear
75°24°
0%
Tue Night
Clear
75°24°
0%
Wednesday
Clear
82°28°
0%
Thursday
Clear
82°/ 55° 28°/ 13°
0%

Night: Mostly clear. Cooler with lows in the upper 40s. Northeast winds 5 to 10 mph.

Greene County, IL

Tonight
Clear
48°9°
0%
Saturday
Sunny
75°/ 48° 24°/ 9°
0%
Sunday
Sunny
78°/ 48° 26°/ 9°
0%
Monday
Clear
75°24°
0%
Tuesday
Clear
75°/ 52° 24°/ 11°
0%
Wednesday
Clear
52°11°
0%
Thursday
Clear
52°/ 55° 11°/ 13°
0%

Night: Clear, cooler with lows in the upper 40s. Northeast winds 5 to 10 mph.

Chester, IL

Tonight
Mostly Cloudy
52°11°
0%
Saturday
Sunny
75°/ 55° 24°/ 13°
0%
Sunday
Sunny
78°/ 52° 26°/ 11°
0%
Monday
Sunny
75°/ 45° 24°/ 7°
0%
Tue Night-Wed
Clear
48°9°
0%
Wed Night
Clear
55°13°
0%
Thursday
Clear
55°13°
0%
Friday
Clear
55°13°
0%

Night: Mostly cloudy this evening, then clearing. Cooler with lows in the lower 50s. Northeast winds 5 to 10 mph.

Washington, MO

Tonight
Clear
52°11°
0%
Saturday
Sunny
72°/ 52° 22°/ 11°
0%
Sunday
Sunny
78°/ 52° 26°/ 11°
0%
Monday
Sunny
72°/ 45° 22°/ 7°
0%
Tue Night-Wed
Clear
48°9°
0%
Wed Night
Clear
55°13°
0%
Thursday
Clear
55°13°
0%
Friday
Clear
55°13°
0%

Night: Mostly clear. Lows in the lower 50s. Northeast winds around 5 mph.

Pinckneyville, IL

Tonight
Mostly Cloudy
52°11°
0%
Saturday
Sunny
75°/ 52° 24°/ 11°
0%
Sunday
Sunny
80°/ 52° 27°/ 11°
0%
Monday
Sunny
75°/ 45° 24°/ 7°
0%
Tue Night-Wed
Clear
48°9°
0%
Wed Night
Clear
52°11°
0%
Thursday
Clear
52°11°
0%
Friday
Clear
52°11°
0%

Night: Mostly cloudy this evening, then clearing. Lows in the lower 50s. Northeast winds 5 to 10 mph.

Chester, MO

Tonight
Mostly Cloudy
52°11°
0%
Saturday
Sunny
75°/ 55° 24°/ 13°
0%
Sunday
Sunny
78°/ 52° 26°/ 11°
0%
Monday
Sunny
75°/ 45° 24°/ 7°
0%
Tue Night-Wed
Clear
48°9°
0%
Wed Night
Clear
55°13°
0%
Thursday
Clear
55°13°
0%
Friday
Clear
55°13°
0%

Night: Mostly cloudy this evening, then clearing. Cooler with lows in the lower 50s. Northeast winds 5 to 10 mph.

Farmington, MO

Tonight
Mostly Cloudy
52°11°
0%
Saturday
Sunny
75°/ 55° 24°/ 13°
0%
Sunday
Sunny
78°/ 52° 26°/ 11°
0%
Monday
Clear
75°24°
0%
Tuesday
Clear
75°/ 48° 24°/ 9°
0%
Wed Night
Clear
55°13°
0%
Thursday
Clear
55°13°
0%
Friday
Clear
55°13°
0%

Night: Mostly cloudy this evening, then clearing. Cooler with lows in the lower 50s. Northeast winds 5 to 10 mph.

Mount Vernon, IL

Tonight
Mostly Cloudy
52°11°
0%
Saturday
Sunny
75°/ 52° 24°/ 11°
0%
Sunday
Sunny
80°/ 52° 27°/ 11°
0%
Monday
Clear
75°24°
0%
Tue Night
Clear
75°24°
0%
Wednesday
Sunny
82°/ 52° 28°/ 11°
0%
Thursday
Clear
52°11°
0%
Friday
Clear
52°11°
0%

Night: Mostly cloudy this evening, then clearing. Lows in the lower 50s. Northeast winds 5 to 10 mph.

Carbondale, IL

Tonight
Mostly Cloudy
55°13°
0%
Saturday
Sunny
75°/ 55° 24°/ 13°
0%
Sunday
Sunny
78°/ 55° 26°/ 13°
0%
Monday
Sunny
75°/ 48° 24°/ 9°
0%
Tue Night
Clear
48°9°
0%
Wednesday
Sunny
80°/ 55° 27°/ 13°
0%
Thursday
Clear
55°13°
0%
Friday
Clear
55°13°
0%

Night: Mostly cloudy this evening, then clearing. Lows in the mid 50s. Northeast winds 5 to 10 mph.

Perryville, MO

Tonight
Mostly Cloudy
55°13°
0%
Saturday
Sunny
75°/ 55° 24°/ 13°
0%
Sunday
Sunny
78°/ 55° 26°/ 13°
0%
Monday
Sunny
75°/ 48° 24°/ 9°
0%
Tue Night-Wed
Clear
48°9°
0%
Wed Night
Clear
55°13°
0%
Thursday
Clear
55°13°
0%
Friday
Clear
55°13°
0%

Night: Mostly cloudy this evening, then clearing. Lows in the mid 50s. Northeast winds 5 to 10 mph.

Quincy, MO

Tonight
Clear
48°9°
0%
Saturday
Sunny
72°/ 52° 22°/ 11°
0%
Sunday
Sunny
75°/ 48° 24°/ 9°
0%
Monday
Clear
72°22°
0%
Tuesday
Clear
72°/ 55° 22°/ 13°
0%
Wednesday
Clear
55°13°
0%
Thu Night
Clear
55°13°
0%
Friday
Sunny
78°26°
0%

Night: Clear. Lows in the upper 40s. Northeast winds 5 to 10 mph.

Taylorville, IL

Tonight
Clear
48°9°
0%
Saturday
Sunny
75°/ 48° 24°/ 9°
0%
Sunday
Sunny
78°/ 48° 26°/ 9°
0%
Monday
Clear
75°24°
0%
Tue Night
Clear
75°24°
0%
Wednesday
Clear
82°28°
0%
Thursday
Clear
82°/ 55° 28°/ 13°
0%

Night: Clear, cooler with lows in the upper 40s. Northeast winds 5 to 10 mph.

Springfield, IL

Tonight
Clear
45°7°
0%
Saturday
Sunny
72°/ 48° 22°/ 9°
0%
Sunday
Sunny
78°/ 48° 26°/ 9°
0%
Monday
Clear
72°22°
0%
Tuesday
Clear
72°/ 52° 22°/ 11°
0%
Wednesday
Clear
52°11°
0%
Thu Night
Clear
52°11°
0%
Friday
Sunny
82°28°
0%

Night: Clear, cooler with lows in the mid 40s. Northeast winds 5 to 10 mph.

Winchester, IL

Tonight
Clear
45°7°
0%
Saturday
Sunny
72°/ 48° 22°/ 9°
0%
Sunday
Sunny
75°/ 48° 24°/ 9°
0%
Monday
Clear
72°22°
0%
Tuesday
Clear
72°/ 52° 22°/ 11°
0%
Wednesday
Clear
52°11°
0%
Thursday
Clear
52°/ 55° 11°/ 13°
0%

Night: Clear, cooler with lows in the mid 40s. Northeast winds 5 to 10 mph.

Names listed above may include county names.

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