SULLIVAN, IL 61951 Weather Forecast & Current Conditions

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MATTOON, IL
Current Weather

4:53 AM CDT JUN 26, 2025
Few Clouds
77°F
Feels Like: 78°F
Dewpoint: 73°F
Rel. Hum.: 87%
Visibility: 10 miles
Wind: SSW at 6 mph
Pressure: 30.03 inches
Last 72 hours

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SULLIVAN, IL 61951
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
TODAY
Mostly sunny. Isolated showers and thunderstorms this afternoon. Highs in the mid 90s. Southwest winds 5 to 10 mph. Chance of rain 20 percent. Heat index values up to 103.
TONIGHT
Partly cloudy. Isolated showers and thunderstorms in the evening. Humid with lows in the mid 70s. South winds 5 to 10 mph. Chance of rain 20 percent.
FRIDAY
Mostly sunny. A slight chance of showers and thunderstorms in the morning, then showers and thunderstorms likely in the afternoon. Humid with highs around 90. Southwest winds 10 to 15 mph. Chance of rain 60 percent.
FRIDAY NIGHT
Mostly cloudy with a chance of showers and thunderstorms. Humid with lows around 70. West winds 5 to 10 mph. Chance of rain 50 percent.
SATURDAY
Partly sunny with a chance of showers and thunderstorms. Humid with highs in the upper 80s. West winds around 5 mph. Chance of rain 50 percent.
SATURDAY NIGHT
Partly cloudy. Lows in the lower 70s.
SUNDAY
Mostly sunny. A chance of showers and thunderstorms in the afternoon. Highs around 90. Chance of rain 30 percent.
SUNDAY NIGHT
Mostly cloudy with a chance of showers and thunderstorms. Lows in the lower 70s. Chance of rain 50 percent.
MONDAY
Partly sunny with a chance of showers and thunderstorms in the morning, then mostly cloudy with showers and thunderstorms likely in the afternoon. Highs in the upper 80s. Chance of rain 70 percent.
MONDAY NIGHT
Mostly cloudy in the evening, then becoming partly cloudy. Lows in the upper 60s.
TUESDAY THROUGH WEDNESDAY
Partly cloudy. Highs in the mid 80s. Lows in the mid 60s.

Visible Weather Satellite
SULLIVAN, IL 61951
Infrared Weather Satellite
SULLIVAN, IL 61951
NEXRAD Weather Radar
SULLIVAN, IL 61951

MATTOON, IL 3 hourly weather forecast

weather forecast created  8:00 PM EDT  6/25/2025
Thursday
26 JUN 2025
SULLIVAN, IL 61951 weather forecast Day 1, 0 hours 1 AM 78° 80° Partly Cloudy 6%

0% Thunder
( 10% severe)
S   5 88% 74°
Low 75° SULLIVAN, IL 61951 weather forecast Day 1, 3 hours 4 AM 76° 76° Clear SSW   5 90% 73°
High 91° SULLIVAN, IL 61951 weather forecast Day 1, 6 hours 7 AM 78° 80° Partly Cloudy 11%
RAIN
<.01 in
0% Thunder
( 12% severe)
SW   6 85% 73°

Partly Cloudy



SULLIVAN, IL 61951 weather forecast Day 1, 9 hours 10 AM 85° 93° Partly Cloudy WSW   8 70% 74°
SULLIVAN, IL 61951 weather forecast Day 1, 12 hours 1 PM 89° 96° Partly Cloudy 15%
RAIN
.1–.25 in
0% Thunder
( 29% severe)
WSW   8 57% 72°
SULLIVAN, IL 61951 weather forecast Day 1, 15 hours 4 PM 89° 96° Partly Cloudy SW   8 57% 72°
SULLIVAN, IL 61951 weather forecast Day 1, 18 hours 7 PM 86° 92° Partly Cloudy 7%

0% Thunder
( 21% severe)
S   7 63% 72°
SULLIVAN, IL 61951 weather forecast Day 1, 21 hours 10 PM 80° 84° Partly Cloudy S   6 77% 72°
Friday
27 JUN 2025
SULLIVAN, IL 61951 weather forecast Day 2, 0 hours 1 AM 78° 80° Partly Cloudy 6%

0% Thunder
( 11% severe)
SSW   7 79% 71°
Low 74° SULLIVAN, IL 61951 weather forecast Day 2, 3 hours 4 AM 76° 77° Partly Cloudy SSW   7 85% 71°
High 89° SULLIVAN, IL 61951 weather forecast Day 2, 6 hours 7 AM 77° 79° Partly Cloudy 12%
RAIN
<.01 in
0% Thunder
( 19% severe)
SW   7 82% 71°

Partly Cloudy

Chance of Rain

SULLIVAN, IL 61951 weather forecast Day 2, 9 hours 10 AM 83° 88° Partly Cloudy WSW   10 70% 72°
SULLIVAN, IL 61951 weather forecast Day 2, 12 hours 1 PM 86° 91° Partly Cloudy 46%
RAIN
1–2 in
0% Thunder
( 52% severe)
WSW   12 61% 71°
SULLIVAN, IL 61951 weather forecast Day 2, 15 hours 4 PM 86° 91° Mostly Cloudy WSW   10 61% 71°
SULLIVAN, IL 61951 weather forecast Day 2, 18 hours 7 PM 83° 88° Mostly Cloudy 25%
RAIN
***
0% Thunder
( 34% severe)
W   7 67% 71°
SULLIVAN, IL 61951 weather forecast Day 2, 21 hours 10 PM 78° 80° Mostly Cloudy WSW   5 79% 71°

MATTOON, IL extended weather forecast

Saturday
28 JUN 2025
Sunday
29 JUN 2025
Monday
30 JUN 2025
Tuesday
1 JUL 2025
Wednesday
2 JUL 2025
Low 71° Low 72° Low 72° Low 67° Low 65°
High 88° High 92° High 87° High 86° High 88°
SULLIVAN, IL 61951 weather forecast Day 3 SULLIVAN, IL 61951 weather forecast Day 4 SULLIVAN, IL 61951 weather forecast Day 5 SULLIVAN, IL 61951 weather forecast Day 6 SULLIVAN, IL 61951 weather forecast Day 7
Mostly Cloudy
70% Rain
Partly Cloudy
23% Rain
Overcast
59% Rain
Partly Cloudy
30% Rain
Clear
14% Rain
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