Hazardous Weather Conditions

Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Overcast

47°F

8°C

Humidity 83%
Wind Speed NW 12 mph
Barometer 29.84 in (1010.1 mb)
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Wind Chill42°F (6°C)
Last update 18 Apr 6:54 am CDT
Extended Forecast for

2 Miles ENE Harristown IL

  • Today

    Today: A 40 percent chance of showers, mainly before 7am.  Cloudy through mid morning, then gradual clearing, with a high near 55. Breezy, with a west northwest wind 18 to 20 mph, with gusts as high as 30 mph.

    High: 55 °F

    Breezy.
    Chance
    Showers then
    Mostly Sunny

  • Tonight

    Tonight: Patchy frost after 5am.  Otherwise, mostly clear, with a low around 37. West northwest wind 6 to 16 mph becoming southwest after midnight. Winds could gust as high as 23 mph.

    Low: 37 °F

    Mostly Clear
    then Patchy
    Frost

  • Sunday

    Sunday: Patchy frost before 8am.  Otherwise, sunny, with a high near 60. Breezy, with a southwest wind 7 to 12 mph becoming west northwest 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 60 °F

    Patchy Frost
    then Mostly
    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Patchy frost after 4am.  Otherwise, mostly clear, with a low around 34. North northwest wind 5 to 14 mph becoming northeast after midnight. Winds could gust as high as 20 mph.

    Low: 34 °F

    Mostly Clear
    then Patchy
    Frost

  • Monday

    Monday: Patchy frost before 8am.  Otherwise, sunny, with a high near 60. East northeast wind 5 to 8 mph becoming south in the afternoon.

    High: 60 °F

    Patchy Frost
    then Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 48. South southeast wind 9 to 14 mph, with gusts as high as 21 mph.

    Low: 48 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 76. Breezy, with a southwest wind 14 to 21 mph, with gusts as high as 28 mph.

    High: 76 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 56.

    Low: 56 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny

Detailed Forecast

Today
A 40 percent chance of showers, mainly before 7am. Cloudy through mid morning, then gradual clearing, with a high near 55. Breezy, with a west northwest wind 18 to 20 mph, with gusts as high as 30 mph.
Tonight
Patchy frost after 5am. Otherwise, mostly clear, with a low around 37. West northwest wind 6 to 16 mph becoming southwest after midnight. Winds could gust as high as 23 mph.
Sunday
Patchy frost before 8am. Otherwise, sunny, with a high near 60. Breezy, with a southwest wind 7 to 12 mph becoming west northwest 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Sunday Night
Patchy frost after 4am. Otherwise, mostly clear, with a low around 34. North northwest wind 5 to 14 mph becoming northeast after midnight. Winds could gust as high as 20 mph.
Monday
Patchy frost before 8am. Otherwise, sunny, with a high near 60. East northeast wind 5 to 8 mph becoming south in the afternoon.
Monday Night
Mostly clear, with a low around 48. South southeast wind 9 to 14 mph, with gusts as high as 21 mph.
Tuesday
Mostly sunny, with a high near 76. Breezy, with a southwest wind 14 to 21 mph, with gusts as high as 28 mph.
Tuesday Night
Partly cloudy, with a low around 56.
Wednesday
Mostly sunny, with a high near 79.
Wednesday Night
Mostly clear, with a low around 59.
Thursday
Mostly sunny, with a high near 82. Breezy.
Thursday Night
A chance of showers. Partly cloudy, with a low around 61.
Friday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 75.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ENE Harristown IL
 39.84°N 89.03°W (Elev. 666 ft)
6:36 am CDT Apr 18, 2026
6am CDT Apr 18, 2026-6pm CDT Apr 24, 2026
 
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Additional Resources

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