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Griffin, Illinois Weather Forecast
Griffin, Illinois Weather
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Weather Forecast for Griffin, Illinois : Clark County
Issued: 3:16 am CST Dec 18, 2025 Latitude: 39.4467022 Longitude: -87.6547484 View on Google Maps

MouseOver for Detail Forecast
Overnight Thursday Friday Saturday Sunday Monday Tuesday Wednesday
20% chance of rain on Overnight 100% chance of rain on Thursday Mostly Cloudy on Friday Partly Sunny on Saturday Sunny on Sunday Partly Sunny on Monday Mostly Cloudy on Tuesday Mostly Cloudy on Wednesday
Low: 48°F High: 52°F High: 31°F High: 48°F High: 36°F High: 41°F High: 52°F High: 54°F
Low: 18°F Low: 24°F Low: 23°F Low: 22°F Low: 34°F Low: 40°F  
Rain Rain Mostly Cloudy Partly Sunny Sunny Partly Sunny Mostly Cloudy Mostly Cloudy
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Current Conditions at
EDGAR COUNTY ARPT - (KPRG)
41°
Feels like 32°F
Cloudy
as of 3:15 AM CST
Rel. Humidity: 86%
Dew Point: 37°F
Visibility: 10 Miles
Pressure: 29.77 in.
Flight Rule: MVFR
Wind Data
16 MPH
170° South
Cloud Level(s): Solid Overcast at 1600ft
Current Conditions at
TERRE HAUTE - (KHUF)
48°
Feels like 42°F
Cloudy
as of 3:53 AM EST
Rel. Humidity: 81%
Dew Point: 43°F
Visibility: 10 Miles
Pressure: 29.82 in.
Flight Rule: VFR
Wind Data
14 MPH
Gust: 22 MPH
170° South
Cloud Level(s): Scattered at 3600ft, Solid Overcast at 6500ft
Current Conditions at
ROBINSON - (KRSV)
50°
Feels like 44°F
Cloudy
as of 3:15 AM CST
Rel. Humidity: 76%
Dew Point: 43°F
Visibility: 10 Miles
Pressure: 29.80 in.
Flight Rule: VFR
Wind Data
15 MPH
Gust: 24 MPH
170° South
Cloud Level(s): Broken at 3200ft, Broken at 3900ft, Solid Overcast at 8500ft
Current Conditions at
MATTOON - (KMTO)
48°
Feels like 41°F
Cloudy
as of 3:16 AM CST
Rel. Humidity: 87%
Dew Point: 45°F
Visibility: 10 Miles
Pressure: 29.73 in.
Flight Rule: MVFR
Wind Data
18 MPH
Gust: 33 MPH
170° South
Cloud Level(s): Broken at 1500ft, Solid Overcast at 2300ft
20% chance of rain Overnight Overnight... A slight chance of drizzle before 4am, then a slight chance of rain between 4am and 5am, then a chance of drizzle after 5am. Cloudy, with a steady temperature around 48. South wind around 16 mph, with gusts as high as 31 mph. Chance of precipitation is 20%.

100% chance of rain Thursday Thursday... Rain before 5pm, then a chance of showers after 5pm. High near 52. Breezy, with a south wind 20 to 25 mph becoming west 14 to 19 mph in the afternoon. Winds could gust as high as 43 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

40% chance of rain & snow Thursday Night Thursday Night... A chance of rain and snow showers before 11pm, then a chance of snow showers between 11pm and 3am. Mostly cloudy, with a low around 18. Wind chill values between 4 and 14. Blustery, with a west wind 10 to 15 mph increasing to 18 to 23 mph after midnight. Winds could gust as high as 36 mph. Chance of precipitation is 40%.

Mostly Cloudy on Friday Friday... Mostly cloudy, then gradually becoming sunny, with a high near 31. Wind chill values between 4 and 14. Blustery, with a west northwest wind 15 to 20 mph becoming south southwest 6 to 11 mph in the afternoon. Winds could gust as high as 29 mph.

Cloudy on Friday Night Friday Night... Partly cloudy, with a low around 24. South wind 6 to 15 mph, with gusts as high as 25 mph.

Partly Sunny on Saturday Saturday... Partly sunny, with a high near 48. South wind 8 to 16 mph becoming west southwest in the afternoon. Winds could gust as high as 26 mph.

Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 23. Northwest wind around 7 mph, with gusts as high as 15 mph.

Sunny on Sunday Sunday... Sunny, with a high near 36.

Mostly Cloudy on Sunday Night Sunday Night... Mostly cloudy, with a low around 22.

Partly Sunny on Monday Monday... Partly sunny, with a high near 41.

Mostly Cloudy on Monday Night Monday Night... Mostly cloudy, with a low around 34.

Mostly Cloudy on Tuesday Tuesday... Mostly cloudy, with a high near 52.

Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 40.

Mostly Cloudy on Wednesday Wednesday... Mostly cloudy, with a high near 54.

Current Radar Image


Sun Almanac for Griffin, Illinois
Sunrise: 07:06 AM
Sunset: 4:29 PM
Civil Sunrise:06:36 AM
Civil Sunset: 4:59 PM
Nautical Sunrise: 06:02 AM
Nautical Sunset: 5:33 PM
Astro Sunrise: 05:29 AM
Astro Sunset: 6:06 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.