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Hazardous Weather Conditions

Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Fair

56°F

13°C

Humidity 97%
Wind Speed E 3 mph
Barometer 30.10 in (1019.0 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 25 Aug 1:54 am CDT
Extended Forecast for

2 Miles SSW Decatur IL

  • Overnight

    Overnight: Patchy fog after 3am. Otherwise, mostly clear, with a low around 57. Calm wind.

    Low: 57 °F

    Patchy Fog

  • Tuesday

    Tuesday: Patchy fog before 8am. Otherwise, sunny, with a high near 82. Southeast wind around 6 mph becoming calm in the afternoon.

    High: 82 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 63. Light southeast wind.

    Low: 63 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 87. South wind 5 to 10 mph becoming west in the afternoon. Winds could gust as high as 16 mph.

    High: 87 °F

    Mostly Sunny
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 64. West wind 3 to 7 mph.

    Low: 64 °F

    Chance
    T-storms then
    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 84. Light northwest wind becoming north northwest 5 to 9 mph in the morning.

    High: 84 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 62. North wind 5 to 7 mph becoming calm in the evening.

    Low: 62 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 84.

    High: 84 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

Detailed Forecast

Overnight
Patchy fog after 3am. Otherwise, mostly clear, with a low around 57. Calm wind.
Tuesday
Patchy fog before 8am. Otherwise, sunny, with a high near 82. Southeast wind around 6 mph becoming calm in the afternoon.
Tuesday Night
Partly cloudy, with a low around 63. Light southeast wind.
Wednesday
A 40 percent chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 87. South wind 5 to 10 mph becoming west in the afternoon. Winds could gust as high as 16 mph.
Wednesday Night
A 30 percent chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 64. West wind 3 to 7 mph.
Thursday
Sunny, with a high near 84. Light northwest wind becoming north northwest 5 to 9 mph in the morning.
Thursday Night
Mostly clear, with a low around 62. North wind 5 to 7 mph becoming calm in the evening.
Friday
Sunny, with a high near 84.
Friday Night
Mostly clear, with a low around 61.
Saturday
Mostly sunny, with a high near 86.
Saturday Night
Partly cloudy, with a low around 67.
Sunday
Mostly sunny, with a high near 91.
Sunday Night
Partly cloudy, with a low around 71.
Monday
Mostly sunny, with a high near 92.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSW Decatur IL
 39.86°N 88.94°W (Elev. 682 ft)
Last Update:
1:26 am CDT Aug 25, 2026
Forecast Valid:
2am CDT Aug 25, 2026-6pm CDT Aug 31, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation