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Hazardous Weather Conditions

Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Overcast

74°F

23°C

Humidity 82%
Wind Speed NW 3 mph
Barometer 30.04 in (1016.6 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 14 Oct 12:54 pm CDT
Extended Forecast for

Hammond IL

  • This Afternoon

    This Afternoon: A 30 percent chance of showers, mainly before 2pm. Mostly cloudy, with a high near 78. North northeast wind around 7 mph.

    High: 78 °F

    Chance
    Showers

  • Tonight

    Tonight: A 20 percent chance of showers after 4am. Mostly cloudy, with a low around 60. Northeast wind 8 to 10 mph, with gusts as high as 15 mph.

    Low: 60 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Thursday

    Thursday: Showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. High near 76. East wind 7 to 11 mph becoming south in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 76 °F

    Showers

  • Thursday Night

    Thursday Night: Showers and thunderstorms before 10pm, then a chance of showers between 10pm and 4am. Low around 49. Breezy, with a west southwest wind 10 to 15 mph becoming northwest 16 to 21 mph after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 49 °F

    T-storms then
    Chance
    Showers and
    Breezy

  • Friday

    Friday: A 30 percent chance of showers after 1pm. Partly sunny, with a high near 57. Breezy, with a northwest wind around 23 mph, with gusts as high as 33 mph.

    High: 57 °F

    Breezy.
    Partly Sunny
    then Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 36. North wind 11 to 15 mph, with gusts as high as 21 mph.

    Low: 36 °F

    Partly Cloudy

  • Saturday

    Saturday: Patchy frost before 8am. Otherwise, sunny, with a high near 60. North wind 5 to 8 mph becoming calm in the afternoon.

    High: 60 °F

    Patchy Frost
    then Sunny

  • Saturday Night

    Saturday Night: Areas of frost after 4am. Otherwise, clear, with a low around 34.

    Low: 34 °F

    Clear then
    Areas Frost

  • Sunday

    Sunday: Areas of frost before 8am. Otherwise, sunny, with a high near 67.

    High: 67 °F

    Areas Frost
    then Sunny

Detailed Forecast

This Afternoon
A 30 percent chance of showers, mainly before 2pm. Mostly cloudy, with a high near 78. North northeast wind around 7 mph.
Tonight
A 20 percent chance of showers after 4am. Mostly cloudy, with a low around 60. Northeast wind 8 to 10 mph, with gusts as high as 15 mph.
Thursday
Showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. High near 76. East wind 7 to 11 mph becoming south in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
Showers and thunderstorms before 10pm, then a chance of showers between 10pm and 4am. Low around 49. Breezy, with a west southwest wind 10 to 15 mph becoming northwest 16 to 21 mph after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Friday
A 30 percent chance of showers after 1pm. Partly sunny, with a high near 57. Breezy, with a northwest wind around 23 mph, with gusts as high as 33 mph.
Friday Night
Partly cloudy, with a low around 36. North wind 11 to 15 mph, with gusts as high as 21 mph.
Saturday
Patchy frost before 8am. Otherwise, sunny, with a high near 60. North wind 5 to 8 mph becoming calm in the afternoon.
Saturday Night
Areas of frost after 4am. Otherwise, clear, with a low around 34.
Sunday
Areas of frost before 8am. Otherwise, sunny, with a high near 67.
Sunday Night
Mostly clear, with a low around 39.
Monday
Mostly sunny, with a high near 74.
Monday Night
Partly cloudy, with a low around 43.
Tuesday
Mostly sunny, with a high near 74.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hammond IL
 39.81°N 88.6°W (Elev. 673 ft)
Last Update:
1:26 pm CDT Oct 14, 2026
Forecast Valid:
1pm CDT Oct 14, 2026-6pm CDT Oct 20, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation