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.

Fair

72°F

22°C

Humidity 37%
Wind Speed S 12 mph
Barometer 30.03 in (1016.8 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Last update 19 Mar 2:54 pm CDT
Extended Forecast for

Hammond IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 70. South wind around 9 mph.

    High: 70 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 47. South southeast wind 7 to 9 mph, with gusts as high as 15 mph.

    Low: 47 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 77. Southwest wind 9 to 15 mph becoming west northwest in the afternoon. Winds could gust as high as 21 mph.

    High: 77 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 44. North northwest wind 6 to 8 mph becoming east northeast after midnight.

    Low: 44 °F

    Mostly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 75. East wind 6 to 9 mph becoming southwest in the afternoon.

    High: 75 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 55. South southwest wind 8 to 13 mph, with gusts as high as 20 mph.

    Low: 55 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 80. Breezy, with a south southwest wind 14 to 21 mph becoming west in the afternoon. Winds could gust as high as 31 mph.

    High: 80 °F

    Mostly Sunny
    and Breezy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 36. Breezy.

    Low: 36 °F

    Mostly Cloudy
    and Breezy
    then Mostly
    Clear

  • Monday

    Monday: Sunny, with a high near 52.

    High: 52 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 70. South wind around 9 mph.
Tonight
Partly cloudy, with a low around 47. South southeast wind 7 to 9 mph, with gusts as high as 15 mph.
Friday
Mostly sunny, with a high near 77. Southwest wind 9 to 15 mph becoming west northwest in the afternoon. Winds could gust as high as 21 mph.
Friday Night
Mostly cloudy, with a low around 44. North northwest wind 6 to 8 mph becoming east northeast after midnight.
Saturday
Sunny, with a high near 75. East wind 6 to 9 mph becoming southwest in the afternoon.
Saturday Night
Mostly clear, with a low around 55. South southwest wind 8 to 13 mph, with gusts as high as 20 mph.
Sunday
Mostly sunny, with a high near 80. Breezy, with a south southwest wind 14 to 21 mph becoming west in the afternoon. Winds could gust as high as 31 mph.
Sunday Night
Partly cloudy, with a low around 36. Breezy.
Monday
Sunny, with a high near 52.
Monday Night
Partly cloudy, with a low around 35.
Tuesday
Mostly cloudy, with a high near 57.
Tuesday Night
Mostly cloudy, with a low around 38.
Wednesday
Partly sunny, with a high near 63.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Hammond IL
 39.81°N 88.6°W (Elev. 673 ft)
Last Update:
1:26 pm CDT Mar 19, 2026
Forecast Valid:
3pm CDT Mar 19, 2026-6pm CDT Mar 25, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation