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

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Fog/Mist

48°F

9°C

Humidity 93%
Wind Speed NW 20 G 30 mph
Barometer 29.87 in (1011.3 mb)
Dewpoint 46°F (8°C)
Visibility 3.00 mi
Wind Chill41°F (5°C)
Last update 7 Mar 12:54 pm CST
Extended Forecast for

Elwin IL

  • This Afternoon

    This Afternoon: A 20 percent chance of showers before 2pm. Cloudy, with a high near 61. Breezy, with a west northwest wind 16 to 21 mph, with gusts as high as 31 mph.

    High: 61 °F

    Slight Chance
    Showers and
    Breezy

  • Tonight

    Tonight: Mostly cloudy, with a low around 35. West northwest wind 7 to 15 mph, with gusts as high as 22 mph.

    Low: 35 °F

    Mostly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 62. Southwest wind 8 to 17 mph, with gusts as high as 24 mph.

    High: 62 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 44. South southwest wind around 14 mph, with gusts as high as 22 mph.

    Low: 44 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 73. South southwest wind 13 to 18 mph, with gusts as high as 25 mph.

    High: 73 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 58. South wind 13 to 15 mph, with gusts as high as 22 mph.

    Low: 58 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 78. Breezy, with a south southwest wind 13 to 21 mph, with gusts as high as 30 mph.

    High: 78 °F

    Partly Sunny
    then Chance
    T-storms and
    Breezy

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm. Low around 51. Breezy. Chance of precipitation is 100%.

    Low: 51 °F

    Showers and
    Breezy

  • Wednesday

    Wednesday: Showers. High near 63. Breezy. Chance of precipitation is 100%.

    High: 63 °F

    Breezy.
    Showers then
    Showers
    Likely

Detailed Forecast

This Afternoon
A 20 percent chance of showers before 2pm. Cloudy, with a high near 61. Breezy, with a west northwest wind 16 to 21 mph, with gusts as high as 31 mph.
Tonight
Mostly cloudy, with a low around 35. West northwest wind 7 to 15 mph, with gusts as high as 22 mph.
Sunday
Sunny, with a high near 62. Southwest wind 8 to 17 mph, with gusts as high as 24 mph.
Sunday Night
Clear, with a low around 44. South southwest wind around 14 mph, with gusts as high as 22 mph.
Monday
Sunny, with a high near 73. South southwest wind 13 to 18 mph, with gusts as high as 25 mph.
Monday Night
Mostly clear, with a low around 58. South wind 13 to 15 mph, with gusts as high as 22 mph.
Tuesday
A 50 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 78. Breezy, with a south southwest wind 13 to 21 mph, with gusts as high as 30 mph.
Tuesday Night
Showers and possibly a thunderstorm. Low around 51. Breezy. Chance of precipitation is 100%.
Wednesday
Showers. High near 63. Breezy. Chance of precipitation is 100%.
Wednesday Night
Partly cloudy, with a low around 29. Blustery.
Thursday
Mostly sunny, with a high near 48.
Thursday Night
Mostly cloudy, with a low around 39. Breezy.
Friday
Mostly cloudy, with a high near 62. Breezy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Elwin IL
 39.78°N 88.97°W (Elev. 705 ft)
Last Update:
1:11 pm CST Mar 7, 2026
Forecast Valid:
1pm CST Mar 7, 2026-6pm CDT Mar 13, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation