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Simpson Lake, IL Weather Forecast & Current Conditions

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Simpson Lake, IL Weather Maps

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Simpson Lake Weather Map
UTC Time: 10/3/2026, 14:19
Your Time:
Aeronautical Observation: Automated synoptic observations via NWS Gateway.
Auto-refresh in: 5:02

Simpson Lake, IL Regional Weather

Expires:202610031500;;466227
ASUS43 KLOT 031410
RWRIL 

ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
900 AM CDT SAT OCT 03 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.


ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-031500-
SOUTH-CENTRAL ILLINOIS
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CARBONDALE     SUNNY     57  52  82 NE6       30.24S TC  14           
CAIRO*         PTSUNNY   62  56  81 NE8       30.21R TC  16           
EFFINGHAM*     SUNNY     57  48  71 NE6       30.30R TC  14           
MT. VERNON     SUNNY     58  49  72 NE9       30.26R TC  14           
CENTRALIA*     SUNNY     57  48  72 NE8       30.27R TC  14           
SALEM*         SUNNY     57  50  77 MISG      30.27R TC  14           
METROPOLIS*    SUNNY     61  53  75 NE6       30.21S TC  16           
$$


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

Simpson Lake, IL

Today
Sunny
72°/ 55° 22°/ 13°
0%
Sunday
Sunny
78°/ 52° 26°/ 11°
0%
Monday
Sunny
72°/ 48° 22°/ 9°
0%
Tue Night
Clear
48°9°
0%
Wednesday
Clear
82°28°
0%
Thursday
Clear
82°28°
0%
Friday
Clear
82°28°
0%

Day: Mostly sunny. Highs in the lower 70s. Northeast winds 5 to 10 mph.

Night: Mostly cloudy. Lows in the mid 50s. Northeast winds around 5 mph.

Golconda, IL

Today
Sunny
75°/ 55° 24°/ 13°
0%
Sunday
Sunny
75°/ 52° 24°/ 11°
0%
Monday
Sunny
72°/ 48° 22°/ 9°
0%
Tue Night
Clear
48°9°
0%
Wednesday
Clear
82°28°
0%
Thursday
Clear
82°28°
0%
Friday
Clear
82°28°
0%

Day: Mostly sunny. Highs in the mid 70s. Northeast winds 5 to 10 mph.

Night: Mostly cloudy. Lows in the mid 50s. Northeast winds around 5 mph.

Harrisburg, IL

Today
Sunny
75°/ 52° 24°/ 11°
0%
Sunday
Sunny
78°/ 50° 26°/ 10°
0%
Monday
Sunny
72°/ 45° 22°/ 7°
0%
Tue Night
Clear
45°7°
0%
Wednesday
Clear
82°28°
0%
Thursday
Clear
82°28°
0%
Friday
Clear
82°28°
0%

Day: Sunny. Highs in the mid 70s. Northeast winds 5 to 10 mph.

Night: Mostly cloudy. Lows in the lower 50s. Northeast winds around 5 mph in the evening, becoming light and variable.

Metropolis, IL

Today
Partly Cloudy
75°/ 55° 24°/ 13°
0%
Sunday
Sunny
78°/ 52° 26°/ 11°
0%
Monday
Sunny
75°/ 48° 24°/ 9°
0%
Tue Night
Clear
48°9°
0%
Wednesday
Sunny
78°/ 52° 26°/ 11°
0%
Thursday
Clear
52°11°
0%
Friday
Clear
52°11°
0%

Day: Partly sunny. Highs in the mid 70s. Northeast winds around 5 mph.

Night: Mostly cloudy. Lows in the mid 50s. Northeast winds around 5 mph.

Herrin, IL

Today
Sunny
75°/ 52° 24°/ 11°
0%
Sunday
Sunny
78°/ 50° 26°/ 10°
0%
Monday
Sunny
72°/ 48° 22°/ 9°
0%
Tue Night
Clear
48°9°
0%
Wednesday
Sunny
80°/ 52° 27°/ 11°
0%
Thursday
Clear
52°11°
0%
Friday
Clear
52°11°
0%

Day: Sunny. Highs in the mid 70s. Northeast winds 5 to 10 mph.

Night: Mostly cloudy. Lows in the lower 50s. Northeast winds around 5 mph in the evening, becoming light and variable.

Mound City, IL

Today
Partly Cloudy
75°/ 55° 24°/ 13°
0%
Sunday
Sunny
78°/ 52° 26°/ 11°
0%
Monday
Sunny
75°/ 48° 24°/ 9°
0%
Tue Night
Clear
48°9°
0%
Wednesday
Sunny
78°/ 52° 26°/ 11°
0%
Thursday
Clear
52°11°
0%
Friday
Clear
52°11°
0%

Day: Partly sunny. Highs in the mid 70s. Northeast winds 5 to 10 mph.

Night: Mostly cloudy. Lows in the mid 50s. Northeast winds around 5 mph.

Smithland, KY

Today
Partly Cloudy
75°/ 55° 24°/ 13°
0%
Sunday
Sunny
75°/ 50° 24°/ 10°
0%
Monday
Sunny
75°/ 48° 24°/ 9°
0%
Tuesday
Clear
48°9°
0%
Wed Night
Clear
48°9°
0%
Thursday
Clear
82°28°
0%
Friday
Clear
82°28°
0%

Day: Partly sunny. Highs in the mid 70s. Northeast winds 5 to 10 mph.

Night: Mostly cloudy. Lows in the mid 50s. Northeast winds around 5 mph.

Elizabethtown, IL

Today
Sunny
72°/ 55° 22°/ 13°
0%
Sunday
Sunny
75°/ 50° 24°/ 10°
0%
Monday
Sunny
72°/ 45° 22°/ 7°
0%
Tue Night
Clear
45°7°
0%
Wednesday
Clear
80°27°
0%
Thursday
Clear
80°27°
0%
Friday
Clear
80°27°
0%

Day: Mostly sunny. Highs in the lower 70s. Northeast winds 5 to 10 mph.

Night: Mostly cloudy. Lows in the mid 50s. Northeast winds around 5 mph.

Jonesboro, IL

Today
Sunny
72°/ 55° 22°/ 13°
0%
Sunday
Sunny
75°/ 52° 24°/ 11°
0%
Monday
Sunny
72°/ 48° 22°/ 9°
0%
Tue Night
Clear
48°9°
0%
Wednesday
Clear
82°28°
0%
Thursday
Clear
82°28°
0%
Friday
Clear
82°28°
0%

Day: Mostly sunny. Highs in the lower 70s. Northeast winds 5 to 10 mph.

Night: Mostly cloudy. Lows in the mid 50s. Northeast winds around 5 mph.

Paducah, KY

Today
Mostly Cloudy
75°/ 58° 24°/ 14°
0%
Sunday
Sunny
78°/ 52° 26°/ 11°
0%
Monday
Sunny
75°/ 48° 24°/ 9°
0%
Tue Night
Clear
48°9°
0%
Wednesday
Sunny
78°/ 52° 26°/ 11°
0%
Thursday
Clear
52°11°
0%
Friday
Clear
52°11°
0%

Day: Mostly cloudy this morning, then becoming partly sunny. Highs in the mid 70s. Northeast winds 5 to 10 mph.

Night: Mostly cloudy. Lows in the upper 50s. Northeast winds around 5 mph.

Wickliffe, KY

Today
Mostly Cloudy
75°/ 58° 24°/ 14°
0%
Sunday
Sunny
78°/ 52° 26°/ 11°
0%
Monday
Sunny
75°/ 48° 24°/ 9°
0%
Tue Night
Clear
48°9°
0%
Wednesday
Sunny
78°/ 52° 26°/ 11°
0%
Thursday
Clear
52°11°
0%
Friday
Clear
52°11°
0%

Day: Mostly cloudy this morning, then becoming partly sunny. Highs in the mid 70s. Northeast winds 5 to 10 mph.

Night: Mostly cloudy. Lows in the upper 50s. Northeast winds around 5 mph.

Marion, KY

Today
Sunny
72°/ 55° 22°/ 13°
0%
Sunday
Sunny
75°/ 50° 24°/ 10°
0%
Monday
Sunny
72°/ 48° 22°/ 9°
0%
Tuesday
Clear
48°9°
0%
Wednesday
Clear
48°9°
0%
Thu Night
Clear
48°9°
0%
Friday
Sunny
82°28°
0%

Day: Mostly sunny. Highs in the lower 70s. Northeast winds 5 to 10 mph.

Night: Mostly cloudy. Lows in the mid 50s. Northeast winds around 5 mph.

Shawneetown, IL

Today
Sunny
72°/ 52° 22°/ 11°
0%
Sunday
Sunny
78°/ 48° 26°/ 9°
0%
Monday
Sunny
72°/ 45° 22°/ 7°
0%
Tue Night
Clear
45°7°
0%
Wednesday
Clear
82°28°
0%
Thursday
Clear
82°28°
0%
Friday
Clear
82°28°
0%

Day: Mostly sunny. Highs in the lower 70s. Northeast winds 5 to 10 mph.

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

Carbondale, IL

Today
Sunny
75°/ 52° 24°/ 11°
0%
Sunday
Sunny
78°/ 52° 26°/ 11°
0%
Monday
Sunny
72°/ 48° 22°/ 9°
0%
Tue Night
Clear
48°9°
0%
Wednesday
Sunny
80°/ 52° 27°/ 11°
0%
Thursday
Clear
52°11°
0%
Friday
Clear
52°11°
0%

Day: Sunny. Highs in the mid 70s. Northeast winds 5 to 10 mph.

Night: Mostly cloudy. Lows in the lower 50s. Northeast winds around 5 mph in the evening, becoming light and variable.

West Frankfort, IL

Today
Sunny
75°/ 52° 24°/ 11°
0%
Sunday
Sunny
78°/ 52° 26°/ 11°
0%
Monday
Sunny
75°/ 48° 24°/ 9°
0%
Tue Night
Clear
48°9°
0%
Wednesday
Sunny
82°/ 52° 28°/ 11°
0%
Thursday
Clear
52°11°
0%
Friday
Clear
52°11°
0%

Day: Sunny. Highs in the mid 70s. Northeast winds 5 to 10 mph.

Night: Mostly cloudy. Lows in the lower 50s. Northeast winds around 5 mph in the evening, becoming light and variable.

Cairo, IL

Today
Partly Cloudy
75°/ 58° 24°/ 14°
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%

Day: Partly sunny. Highs in the mid 70s. Northeast winds 5 to 10 mph.

Night: Mostly cloudy. Lows in the upper 50s. Northeast winds around 5 mph.

McLeansboro, IL

Today
Sunny
75°/ 52° 24°/ 11°
0%
Sunday
Sunny
78°/ 52° 26°/ 11°
0%
Monday
Sunny
75°/ 45° 24°/ 7°
0%
Tue Night
Clear
45°7°
0%
Wednesday
Clear
82°28°
0%
Thursday
Clear
82°28°
0%
Friday
Clear
82°28°
0%

Day: Sunny. Highs in the mid 70s. Northeast winds 5 to 10 mph.

Night: Mostly cloudy. Lows in the lower 50s. Northeast winds around 5 mph in the evening, becoming light and variable.

Benton, KY

Today
Mostly Cloudy
75°/ 58° 24°/ 14°
0%
Sunday
Sunny
75°/ 52° 24°/ 11°
0%
Monday
Sunny
75°/ 52° 24°/ 11°
0%
Tuesday
Clear
52°11°
0%
Wednesday
Clear
52°11°
0%
Thu Night
Clear
52°11°
0%
Friday
Sunny
82°28°
0%

Day: Mostly cloudy this morning, then becoming partly sunny. Highs in the mid 70s. Northeast winds 5 to 10 mph.

Night: Mostly cloudy. Lows in the upper 50s. Northeast winds around 5 mph.

Carmi, IL

Today
Sunny
75°/ 52° 24°/ 11°
0%
Sunday
Sunny
78°/ 52° 26°/ 11°
0%
Monday
Sunny
75°/ 45° 24°/ 7°
0%
Tue Night
Clear
45°7°
0%
Wednesday
Clear
82°28°
0%
Thursday
Clear
82°28°
0%
Friday
Clear
82°28°
0%

Day: Sunny. Highs in the mid 70s. Northeast winds 5 to 10 mph.

Night: Mostly cloudy. Lows in the lower 50s. Northeast winds around 5 mph in the evening, becoming light and variable.

Morganfield, KY

Today
Sunny
72°/ 52° 22°/ 11°
0%
Sunday
Sunny
75°/ 48° 24°/ 9°
0%
Monday
Sunny
72°/ 45° 22°/ 7°
0%
Tue Night
Clear
45°7°
0%
Wednesday
Clear
82°28°
0%
Thursday
Clear
82°28°
0%
Friday
Clear
82°28°
0%

Day: Mostly sunny. Highs in the lower 70s. Northeast winds 5 to 10 mph.

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

Names listed above may include county names.

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