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Hazardous Weather Conditions

Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Overcast

46°F

8°C

Humidity 93%
Wind Speed E 5 mph
Barometer 29.61 in (1002.7 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Wind Chill44°F (7°C)
Last update 19 Feb 2:54 am CST
Extended Forecast for

2 Miles ENE Harristown IL

  • Overnight

    Overnight: A slight chance of showers and thunderstorms before 3am, then a slight chance of showers between 3am and 4am. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 44. East southeast wind around 6 mph. Chance of precipitation is 20%.

    Low: 44 °F

    Slight Chance
    T-storms and
    Patchy Fog

  • Thursday

    Thursday: Showers and thunderstorms likely, mainly between 1pm and 3pm. Areas of fog before 10am. Otherwise, mostly cloudy, with a high near 64. South southeast wind 7 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 64 °F

    Slight Chance
    T-storms and
    Areas Fog
    then T-storms
    Likely

  • Thursday Night

    Thursday Night: A 30 percent chance of showers before 9pm. Partly cloudy, with a low around 34. Breezy, with a south wind 9 to 14 mph becoming west 19 to 24 mph after midnight. Winds could gust as high as 38 mph.

    Low: 34 °F

    Chance
    Showers then
    Partly Cloudy
    and Breezy

  • Friday

    Friday: Mostly cloudy, then gradually becoming sunny, with a high near 44. Breezy, with a west wind 19 to 24 mph decreasing to 13 to 18 mph in the afternoon. Winds could gust as high as 37 mph.

    High: 44 °F

    Decreasing
    Clouds and
    Breezy

  • Friday Night

    Friday Night: Mostly clear, with a low around 25. Northwest wind 6 to 10 mph, with gusts as high as 15 mph.

    Low: 25 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 41. West northwest wind 7 to 14 mph, with gusts as high as 18 mph.

    High: 41 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 22. Northwest wind 10 to 16 mph, with gusts as high as 22 mph.

    Low: 22 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 34. Breezy.

    High: 34 °F

    Partly Sunny
    and Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 18.

    Low: 18 °F

    Mostly Clear

Detailed Forecast

Overnight
A slight chance of showers and thunderstorms before 3am, then a slight chance of showers between 3am and 4am. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 44. East southeast wind around 6 mph. Chance of precipitation is 20%.
Thursday
Showers and thunderstorms likely, mainly between 1pm and 3pm. Areas of fog before 10am. Otherwise, mostly cloudy, with a high near 64. South southeast wind 7 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A 30 percent chance of showers before 9pm. Partly cloudy, with a low around 34. Breezy, with a south wind 9 to 14 mph becoming west 19 to 24 mph after midnight. Winds could gust as high as 38 mph.
Friday
Mostly cloudy, then gradually becoming sunny, with a high near 44. Breezy, with a west wind 19 to 24 mph decreasing to 13 to 18 mph in the afternoon. Winds could gust as high as 37 mph.
Friday Night
Mostly clear, with a low around 25. Northwest wind 6 to 10 mph, with gusts as high as 15 mph.
Saturday
Mostly sunny, with a high near 41. West northwest wind 7 to 14 mph, with gusts as high as 18 mph.
Saturday Night
Partly cloudy, with a low around 22. Northwest wind 10 to 16 mph, with gusts as high as 22 mph.
Sunday
Partly sunny, with a high near 34. Breezy.
Sunday Night
Mostly clear, with a low around 18.
Monday
Sunny, with a high near 34.
Monday Night
Mostly clear, with a low around 18.
Tuesday
Mostly sunny, with a high near 44.
Tuesday Night
Mostly cloudy, with a low around 35.
Wednesday
Mostly cloudy, with a high near 54.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ENE Harristown IL
 39.84°N 89.03°W (Elev. 666 ft)
Last Update:
2:36 am CST Feb 19, 2026
Forecast Valid:
2am CST Feb 19, 2026-6pm CST Feb 25, 2026
 
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Additional Resources

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High Temperature

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Chance of Precipitation