National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Overcast

44°F

7°C

Humidity 76%
Wind Speed NW 16 G 28 mph
Barometer 30.02 in (1016.5 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Wind Chill37°F (3°C)
Last update 9 Jan 9:54 am CST
Extended Forecast for

2 Miles NNW Blue Mound IL

  • Today

    Today: Mostly cloudy, with a high near 48. West northwest wind 11 to 16 mph becoming north 5 to 10 mph in the afternoon. Winds could gust as high as 24 mph.

    High: 48 °F

    Mostly Cloudy

  • Tonight

    Tonight: A 30 percent chance of rain after 3am. Mostly cloudy, with a low around 37. Light and variable wind becoming north northwest around 5 mph after midnight.

    Low: 37 °F

    Mostly Cloudy
    then Chance
    Rain

  • Saturday

    Saturday: A 30 percent chance of rain before noon. Cloudy through mid morning, then gradual clearing, with a high near 43. West northwest wind 6 to 11 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 29 mph.

    High: 43 °F

    Chance Rain
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 21. West northwest wind 14 to 18 mph, with gusts as high as 26 mph.

    Low: 21 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 33. Northwest wind 9 to 18 mph, with gusts as high as 26 mph.

    High: 33 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 24. South southwest wind 6 to 11 mph, with gusts as high as 18 mph.

    Low: 24 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 44. Southwest wind 9 to 15 mph, with gusts as high as 21 mph.

    High: 44 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 34.

    Low: 34 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 50.

    High: 50 °F

    Mostly Cloudy

Detailed Forecast

Today
Mostly cloudy, with a high near 48. West northwest wind 11 to 16 mph becoming north 5 to 10 mph in the afternoon. Winds could gust as high as 24 mph.
Tonight
A 30 percent chance of rain after 3am. Mostly cloudy, with a low around 37. Light and variable wind becoming north northwest around 5 mph after midnight.
Saturday
A 30 percent chance of rain before noon. Cloudy through mid morning, then gradual clearing, with a high near 43. West northwest wind 6 to 11 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 29 mph.
Saturday Night
Partly cloudy, with a low around 21. West northwest wind 14 to 18 mph, with gusts as high as 26 mph.
Sunday
Mostly sunny, with a high near 33. Northwest wind 9 to 18 mph, with gusts as high as 26 mph.
Sunday Night
Mostly clear, with a low around 24. South southwest wind 6 to 11 mph, with gusts as high as 18 mph.
Monday
Sunny, with a high near 44. Southwest wind 9 to 15 mph, with gusts as high as 21 mph.
Monday Night
Partly cloudy, with a low around 34.
Tuesday
Mostly cloudy, with a high near 50.
Tuesday Night
A 30 percent chance of rain before midnight. Mostly cloudy, with a low around 34.
Wednesday
A chance of rain and snow. Partly sunny, with a high near 39.
Wednesday Night
Mostly cloudy, with a low around 22.
Thursday
Mostly sunny, with a high near 34.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNW Blue Mound IL
 39.74°N 89.12°W (Elev. 600 ft)
Last Update:
9:37 am CST Jan 9, 2026
Forecast Valid:
10am CST Jan 9, 2026-6pm CST Jan 15, 2026
 
Forecast Discussion
 
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Additional Resources

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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