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Hazardous Weather Conditions

Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Mostly Cloudy

43°F

6°C

Humidity 42%
Wind Speed E 10 mph
Barometer 30.14 in (1020.9 mb)
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill37°F (3°C)
Last update 17 Nov 8:54 am CST
Extended Forecast for

2 Miles SSW Decatur IL

  • Today

    Today: Mostly sunny, with a high near 56. Southeast wind 5 to 10 mph.

    High: 56 °F

    Mostly Sunny

  • Tonight

    Tonight: Rain and possibly a thunderstorm before 4am, then rain likely. Low around 45. East southeast wind 10 to 14 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 45 °F

    Rain

  • Tuesday

    Tuesday: A 50 percent chance of rain. Mostly cloudy, with a high near 57. Southeast wind 8 to 14 mph becoming north northeast in the afternoon. Winds could gust as high as 18 mph.

    High: 57 °F

    Chance Rain

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 40. Northeast wind 6 to 9 mph.

    Low: 40 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 55. Northeast wind around 6 mph becoming calm in the afternoon.

    High: 55 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 42. Calm wind becoming east southeast around 5 mph after midnight.

    Low: 42 °F

    Mostly Cloudy

  • Thursday

    Thursday: Rain. High near 62. East southeast wind 6 to 10 mph becoming south in the afternoon. Winds could gust as high as 15 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 62 °F

    Rain

  • Thursday Night

    Thursday Night: Rain likely. Mostly cloudy, with a low around 49. Chance of precipitation is 70%.

    Low: 49 °F

    Rain Likely

  • Friday

    Friday: Rain likely, mainly before noon. Mostly cloudy, with a high near 60. Chance of precipitation is 60%.

    High: 60 °F

    Rain Likely

Detailed Forecast

Today
Mostly sunny, with a high near 56. Southeast wind 5 to 10 mph.
Tonight
Rain and possibly a thunderstorm before 4am, then rain likely. Low around 45. East southeast wind 10 to 14 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday
A 50 percent chance of rain. Mostly cloudy, with a high near 57. Southeast wind 8 to 14 mph becoming north northeast in the afternoon. Winds could gust as high as 18 mph.
Tuesday Night
Mostly cloudy, with a low around 40. Northeast wind 6 to 9 mph.
Wednesday
Mostly cloudy, with a high near 55. Northeast wind around 6 mph becoming calm in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 42. Calm wind becoming east southeast around 5 mph after midnight.
Thursday
Rain. High near 62. East southeast wind 6 to 10 mph becoming south in the afternoon. Winds could gust as high as 15 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
Rain likely. Mostly cloudy, with a low around 49. Chance of precipitation is 70%.
Friday
Rain likely, mainly before noon. Mostly cloudy, with a high near 60. Chance of precipitation is 60%.
Friday Night
A 40 percent chance of rain before midnight. Mostly cloudy, with a low around 41.
Saturday
Partly sunny, with a high near 53.
Saturday Night
Partly cloudy, with a low around 36.
Sunday
Mostly sunny, with a high near 55.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSW Decatur IL
 39.86°N 88.94°W (Elev. 682 ft)
Last Update:
6:36 am CST Nov 17, 2025
Forecast Valid:
9am CST Nov 17, 2025-6pm CST Nov 23, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation