Sullivan, IL Weather Forecast & Current Conditions

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Sullivan Weather Map
UTC Time: 9/20/2026, 13:09
Your Time:
Aeronautical Observation: Automated synoptic observations via NWS Gateway.
Auto-refresh in: 5:02

Sullivan, IL Regional Weather

Expires:202609201400;;765368
ASUS43 KLOT 201308
RWRIL 

ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
800 AM CDT SUN SEP 20 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.


ILZ028>032-037-038-041>044-048-051>054-059>061-201400-
CENTRAL ILLINOIS
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
PONTIAC        CLOUDY    69  69 100 NE5       29.94S TC  21           
BLOOMINGTON    CLOUDY    69  68  96 NE5       29.95R TC  21           
DECATUR        CLOUDY    73  70  90 NE7       29.94R TC  23           
PEORIA         CLOUDY    69  67  93 CALM      29.91S TC  21           
LACON*         CLOUDY    67  65  92 CALM      29.91R TC  20           
LINCOLN*       CLOUDY    72  71  99 CALM      29.92S TC  22           
SPRINGFIELD    PTSUNNY   73  68  84 NE6       29.92S TC  23           
TAYLORVILLE    NOT AVBL                                               
$$


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

Sullivan, IL

Today
Thunderstorms
88°/ 62° 31°/ 17°
50%
Monday
Thunderstorms
72°/ 55° 22°/ 13°
40%
Tuesday
Mostly Cloudy
68°/ 52° 20°/ 11°
0%
Wednesday
Cloudy
72°22°
0%
Thursday
Cloudy
72°/ 52° 22°/ 11°
0%
Fri Night-Sat
Cloudy
52°11°
0%

Day: Partly sunny this morning, then mostly cloudy with a chance of showers and thunderstorms this afternoon. Highs in the upper 80s. Northwest winds 5 to 10 mph. Chance of rain 40 percent.

Night: Mostly cloudy with a chance of showers. A chance of thunderstorms, mainly in the evening. Cooler with lows in the lower 60s. Northeast winds 10 to 15 mph. Chance of rain 50 percent.

Shelbyville, IL

Today
Thunderstorms
88°/ 62° 31°/ 17°
60%
Monday
Thunderstorms
75°/ 55° 24°/ 13°
40%
Tuesday
Mostly Cloudy
68°/ 52° 20°/ 11°
0%
Wednesday
Cloudy
72°22°
0%
Thursday
Cloudy
72°/ 52° 22°/ 11°
0%
Fri Night-Sat
Cloudy
52°11°
0%

Day: Partly sunny. A slight chance of showers and thunderstorms this afternoon. Highs in the upper 80s. West winds 5 to 10 mph. Chance of rain 20 percent.

Night: Mostly cloudy. A chance of showers and thunderstorms in the evening, then showers likely with a slight chance of thunderstorms after midnight. Cooler with lows in the lower 60s. Northeast winds 5 to 10 mph. Chance of rain 60 percent.

Tuscola, IL

Today
Thunderstorms
88°/ 62° 31°/ 17°
50%
Monday
Thunderstorms
72°/ 55° 22°/ 13°
50%
Tuesday
Mostly Cloudy
68°/ 52° 20°/ 11°
0%
Wednesday
Cloudy
72°22°
0%
Thursday
Cloudy
72°/ 52° 22°/ 11°
0%
Fri Night-Sat
Cloudy
50°10°
0%

Day: Partly sunny this morning, then mostly cloudy with a chance of showers and thunderstorms this afternoon. Highs in the upper 80s. Northeast winds 5 to 10 mph, becoming north this afternoon. Chance of rain 40 percent.

Night: Mostly cloudy with a chance of showers. A chance of thunderstorms, mainly in the evening. Cooler with lows in the lower 60s. Northeast winds around 10 mph with gusts up to 20 mph. Chance of rain 50 percent.

Monticello, IL

Today
Thunderstorms
85°/ 60° 29°/ 16°
50%
Monday
Rain Showers
68°/ 55° 20°/ 13°
40%
Tuesday
Mostly Cloudy
65°/ 52° 18°/ 11°
0%
Wednesday
Cloudy
68°20°
0%
Thursday
Cloudy
68°/ 52° 20°/ 11°
0%
Friday
Cloudy
72°22°
0%
Saturday
Cloudy
72°22°
0%

Day: Mostly cloudy with a chance of showers and thunderstorms. Highs in the mid 80s. Northeast winds 5 to 10 mph, becoming north 10 to 15 mph this afternoon. Chance of rain 50 percent.

Night: Mostly cloudy with a chance of showers. A chance of thunderstorms, mainly in the evening. Cooler with lows around 60. Northeast winds 10 to 15 mph. Chance of rain 50 percent.

Charleston, IL

Today
Thunderstorms
88°/ 62° 31°/ 17°
50%
Monday
Thunderstorms
72°/ 55° 22°/ 13°
50%
Tuesday
Mostly Cloudy
68°/ 52° 20°/ 11°
0%
Wed-Wed Night
Cloudy
70°21°
0%
Thursday
Partly Cloudy
72°/ 55° 22°/ 13°
0%
Friday
Partly Cloudy
75°/ 52° 24°/ 11°
0%

Day: Partly sunny. A slight chance of showers and thunderstorms this afternoon. Highs in the upper 80s. Northwest winds 5 to 10 mph. Chance of rain 20 percent.

Night: Mostly cloudy with a chance of showers. A chance of thunderstorms, mainly in the evening. Cooler with lows in the lower 60s. Northeast winds around 10 mph. Chance of rain 50 percent.

Decatur, IL

Today
Thunderstorms
85°/ 62° 29°/ 17°
50%
Monday
Thunderstorms
70°/ 55° 21°/ 13°
40%
Tuesday
Mostly Cloudy
68°/ 52° 20°/ 11°
0%
Wednesday
Cloudy
70°21°
0%
Thursday
Cloudy
70°/ 55° 21°/ 13°
0%
Fri Night-Sat
Cloudy
52°11°
0%

Day: Mostly cloudy. A slight chance of showers and thunderstorms this morning, then a chance of showers and thunderstorms this afternoon. Highs in the mid 80s. Northeast winds 5 to 10 mph, becoming northwest this afternoon. Chance of rain 50 percent.

Night: Mostly cloudy with a chance of showers. A chance of thunderstorms, mainly in the evening. Cooler with lows in the lower 60s. Northeast winds 10 to 15 mph. Chance of rain 50 percent.

Greenup, IL

Today
Thunderstorms
92°/ 65° 33°/ 18°
60%
Monday
Thunderstorms
75°/ 58° 24°/ 14°
40%
Tuesday
Mostly Cloudy
70°/ 52° 21°/ 11°
0%
Wednesday
Cloudy
72°22°
0%
Thu Night
Cloudy
72°22°
0%
Friday
Partly Cloudy
75°/ 52° 24°/ 11°
0%

Day: Partly sunny. A slight chance of showers and thunderstorms this afternoon. Highs in the lower 90s. West winds 5 to 10 mph. Chance of rain 20 percent.

Night: Mostly cloudy. A chance of showers and thunderstorms in the evening, then showers likely with a slight chance of thunderstorms after midnight. Lows in the mid 60s. Northeast winds 5 to 10 mph. Chance of rain 60 percent.

Taylorville, IL

Today
Thunderstorms
88°/ 62° 31°/ 17°
60%
Monday
Thunderstorms
72°/ 58° 22°/ 14°
40%
Tuesday
Mostly Cloudy
68°/ 52° 20°/ 11°
0%
Wednesday
Cloudy
72°22°
0%
Thursday
Cloudy
72°/ 55° 22°/ 13°
0%
Fri Night-Sat
Cloudy
52°11°
0%

Day: Partly sunny. A chance of showers and thunderstorms this afternoon. Highs in the upper 80s. Northwest winds 5 to 10 mph. Chance of rain 40 percent.

Night: Mostly cloudy. A chance of showers and thunderstorms in the evening, then showers likely with a slight chance of thunderstorms after midnight. Cooler with lows in the lower 60s. Northeast winds 5 to 10 mph. Chance of rain 60 percent.

Champaign, IL

Today
Thunderstorms
82°/ 58° 28°/ 14°
50%
Monday
Rain Showers
68°/ 55° 20°/ 13°
50%
Tuesday
Mostly Cloudy
65°/ 52° 18°/ 11°
0%
Wednesday
Mostly Cloudy
52°11°
0%
Thursday
Mostly Cloudy
52°11°
0%
Friday
Mostly Cloudy
52°/ 50° 11°/ 10°
0%

Day: Mostly cloudy with a chance of thunderstorms. A slight chance of showers this morning, then a chance of showers this afternoon. Highs in the lower 80s. Northeast winds 5 to 10 mph. Chance of rain 50 percent.

Night: Mostly cloudy with a chance of showers. A chance of thunderstorms, mainly in the evening. Cooler with lows in the upper 50s. Northeast winds 10 to 15 mph. Chance of rain 50 percent.

Effingham, IL

Today
Partly Cloudy
92°/ 65° 33°/ 18°
60%
Monday
Thunderstorms
78°/ 58° 26°/ 14°
40%
Tuesday
Mostly Cloudy
72°/ 52° 22°/ 11°
0%
Wednesday
Cloudy
75°24°
0%
Thursday
Cloudy
75°24°
0%
Friday
Cloudy
75°24°
0%
Saturday
Cloudy
75°24°
0%

Day: Partly sunny. Highs in the lower 90s. West winds 5 to 10 mph.

Night: Mostly cloudy. A chance of showers and thunderstorms in the evening, then showers likely with a slight chance of thunderstorms after midnight. Lows in the mid 60s. North winds 5 to 10 mph. Chance of rain 60 percent.

Marshall, IL

Today
Thunderstorms
92°/ 65° 33°/ 18°
50%
Monday
Thunderstorms
75°/ 58° 24°/ 14°
50%
Tuesday
Mostly Cloudy
70°/ 55° 21°/ 13°
0%
Wed-Wed Night
Cloudy
72°22°
0%
Thursday
Partly Cloudy
72°/ 52° 22°/ 11°
0%
Friday
Cloudy
52°11°
0%
Saturday
Cloudy
52°11°
0%

Day: Partly sunny. A slight chance of showers and thunderstorms this afternoon. Highs in the lower 90s. West winds 5 to 10 mph. Chance of rain 20 percent.

Night: Mostly cloudy with a chance of showers. A chance of thunderstorms, mainly in the evening. Lows in the mid 60s. Northeast winds around 10 mph. Chance of rain 50 percent.

Litchfield, IL

Today
Thunderstorms
92°/ 65° 33°/ 18°
70%
Monday
Thunderstorms
78°/ 58° 26°/ 14°
50%
Tuesday
Mostly Cloudy
72°/ 52° 22°/ 11°
0%
Wednesday
Cloudy
52°11°
0%
Thu Night
Cloudy
52°11°
0%
Friday
Partly Cloudy
75°/ 52° 24°/ 11°
0%

Day: Partly sunny. A slight chance of showers and thunderstorms this afternoon. Highs in the lower 90s. West winds around 5 mph. Chance of rain 20 percent.

Night: Mostly cloudy with a chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. Lows in the mid 60s. Northeast winds 5 to 10 mph. Chance of rain 70 percent.

Paris, IL

Today
Thunderstorms
88°/ 62° 31°/ 17°
50%
Monday
Thunderstorms
72°/ 55° 22°/ 13°
50%
Tuesday
Mostly Cloudy
68°/ 52° 20°/ 11°
0%
Wednesday
Mostly Cloudy
52°11°
0%
Thursday
Mostly Cloudy
52°11°
0%
Friday
Mostly Cloudy
52°/ 50° 11°/ 10°
0%

Day: Partly sunny this morning, then mostly cloudy with a chance of showers and thunderstorms this afternoon. Highs in the upper 80s. North winds 5 to 10 mph. Chance of rain 40 percent.

Night: Mostly cloudy with a chance of showers. A chance of thunderstorms, mainly in the evening. Lows in the lower 60s. Northeast winds around 10 mph with gusts up to 20 mph. Chance of rain 50 percent.

Clinton, IL

Today
Thunderstorms
82°/ 60° 28°/ 16°
70%
Monday
Rain Showers
68°/ 55° 20°/ 13°
40%
Tuesday
Mostly Cloudy
65°/ 52° 18°/ 11°
0%
Wednesday
Cloudy
68°20°
0%
Thursday
Cloudy
68°/ 52° 20°/ 11°
0%
Fri Night-Sat
Cloudy
52°11°
0%

Day: Mostly cloudy with a chance of thunderstorms. A chance of showers this morning, then showers likely this afternoon. Highs in the lower 80s. Northeast winds 5 to 10 mph, becoming north 10 to 15 mph this afternoon. Chance of rain 70 percent.

Night: Mostly cloudy with a chance of showers. A chance of thunderstorms, mainly in the evening. Cooler with lows around 60. Northeast winds 10 to 15 mph. Chance of rain 50 percent.

Newton, IL

Today
Sunny
92°/ 65° 33°/ 18°
60%
Monday
Thunderstorms
78°/ 58° 26°/ 14°
40%
Tuesday
Mostly Cloudy
72°/ 55° 22°/ 13°
0%
Wednesday
Cloudy
72°22°
0%
Thu Night
Cloudy
72°22°
0%
Friday
Partly Cloudy
75°/ 52° 24°/ 11°
0%

Day: Mostly sunny. Highs in the lower 90s. West winds 5 to 10 mph.

Night: Mostly cloudy. A chance of showers and thunderstorms in the evening, then showers likely with a slight chance of thunderstorms after midnight. Lows in the mid 60s. North winds 5 to 10 mph. Chance of rain 60 percent.

Springfield, IL

Today
Thunderstorms
85°/ 62° 29°/ 17°
60%
Monday
Thunderstorms
72°/ 58° 22°/ 14°
40%
Tuesday
Mostly Cloudy
68°/ 52° 20°/ 11°
0%
Wednesday
Cloudy
72°22°
0%
Thursday
Cloudy
72°/ 55° 22°/ 13°
0%
Fri Night-Sat
Cloudy
52°11°
0%

Day: Mostly cloudy with a slight chance of showers and thunderstorms this morning, then partly sunny with a chance of showers and thunderstorms this afternoon. Highs in the mid 80s. North winds 5 to 10 mph. Chance of rain 50 percent.

Night: Mostly cloudy. A chance of showers and thunderstorms in the evening, then showers likely with a slight chance of thunderstorms after midnight. Lows in the lower 60s. Northeast winds around 10 mph. Chance of rain 60 percent.

Lincoln, IL

Today
Thunderstorms
82°/ 62° 28°/ 17°
70%
Monday
Rain Showers
68°/ 58° 20°/ 14°
40%
Tuesday
Mostly Cloudy
65°/ 52° 18°/ 11°
0%
Wednesday
Cloudy
70°21°
0%
Thursday
Cloudy
70°/ 52° 21°/ 11°
0%
Fri Night-Sat
Cloudy
52°11°
0%

Day: Mostly cloudy with a chance of thunderstorms. A chance of showers this morning, then showers likely this afternoon. Highs in the lower 80s. Northeast winds 5 to 10 mph, becoming north with gusts up to 20 mph this afternoon. Chance of rain 70 percent.

Night: Mostly cloudy with a chance of showers. A chance of thunderstorms, mainly in the evening. Lows in the lower 60s. Northeast winds 10 to 15 mph. Chance of rain 50 percent.

Danville, IL

Today
Thunderstorms
82°/ 60° 28°/ 16°
50%
Monday
Rain Showers
68°/ 55° 20°/ 13°
50%
Tuesday
Mostly Cloudy
65°/ 52° 18°/ 11°
0%
Wednesday
Mostly Cloudy
52°11°
0%
Thu Night
Mostly Cloudy
52°11°
0%
Friday
Cloudy
72°22°
0%
Saturday
Cloudy
72°22°
0%

Day: Mostly cloudy with a chance of thunderstorms. A slight chance of showers this morning, then a chance of showers this afternoon. Highs in the lower 80s. Northeast winds 5 to 10 mph. Chance of rain 50 percent.

Night: Mostly cloudy with a chance of showers. A chance of thunderstorms, mainly in the evening. Lows around 60. Northeast winds 10 to 15 mph. Chance of rain 50 percent.

Bloomington, IL

Today
Thunderstorms
78°/ 58° 26°/ 14°
90%
Monday
Rain Showers
68°/ 55° 20°/ 13°
40%
Tuesday
Mostly Cloudy
65°/ 50° 18°/ 10°
0%
Wednesday
Cloudy
68°20°
0%
Thursday
Cloudy
68°/ 52° 20°/ 11°
0%
Fri Night-Sat
Cloudy
50°10°
0%

Day: Showers with a chance of thunderstorms. Highs in the upper 70s. Temperature falling into the mid 70s this afternoon. Northeast winds 10 to 15 mph. Chance of rain 90 percent.

Night: A chance of thunderstorms in the evening. Cloudy with a chance of showers. Cooler with lows in the upper 50s. Northeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 40 percent.

Flora, IL

Today
Sunny
95°/ 65° 35°/ 18°
60%
Monday
Thunderstorms
80°/ 60° 27°/ 16°
40%
Tuesday
Mostly Cloudy
72°/ 55° 22°/ 13°
0%
Wednesday
Cloudy
75°24°
0%
Thu Night
Cloudy
75°24°
0%
Friday
Partly Cloudy
75°/ 52° 24°/ 11°
0%

Day: Mostly sunny. Highs in the mid 90s. West winds 5 to 10 mph.

Night: Mostly cloudy. A chance of showers and thunderstorms in the evening, then showers likely with a slight chance of thunderstorms after midnight. Lows in the mid 60s. North winds 5 to 10 mph. Chance of rain 60 percent.

Names listed above may include county names.

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