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Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Fair

64°F

18°C

Humidity 84%
Wind Speed SW 9 mph
Barometer 29.96 in (1014.0 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 12 Oct 4:54 am CDT
Extended Forecast for

Hammond IL

  • Columbus Day

    Columbus Day: Sunny, with a high near 90. Southwest wind 7 to 15 mph, with gusts as high as 22 mph.

    High: 90 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 70. Southwest wind 9 to 13 mph, with gusts as high as 18 mph.

    Low: 70 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 91. West southwest wind 11 to 14 mph, with gusts as high as 20 mph.

    High: 91 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers and thunderstorms after 1am. Increasing clouds, with a low around 70. Southwest wind around 7 mph.

    Low: 70 °F

    Mostly Clear
    then Chance
    T-storms

  • Wednesday

    Wednesday: Showers. High near 80. West northwest wind 5 to 7 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 80 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers likely, mainly after 1am. Mostly cloudy, with a low around 61. Northeast wind around 8 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 61 °F

    Showers
    Likely

  • Thursday

    Thursday: Showers likely, then showers and possibly a thunderstorm after 1pm. High near 77. East wind 8 to 11 mph becoming southwest in the afternoon. Winds could gust as high as 16 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 77 °F

    Showers

  • Thursday Night

    Thursday Night: A 40 percent chance of showers before 1am. Mostly cloudy, with a low around 49. Breezy.

    Low: 49 °F

    Chance
    Showers and
    Breezy

  • Friday

    Friday: Mostly sunny, with a high near 61. Breezy.

    High: 61 °F

    Mostly Sunny
    and Breezy

Detailed Forecast

Columbus Day
Sunny, with a high near 90. Southwest wind 7 to 15 mph, with gusts as high as 22 mph.
Tonight
Mostly clear, with a low around 70. Southwest wind 9 to 13 mph, with gusts as high as 18 mph.
Tuesday
Sunny, with a high near 91. West southwest wind 11 to 14 mph, with gusts as high as 20 mph.
Tuesday Night
A 50 percent chance of showers and thunderstorms after 1am. Increasing clouds, with a low around 70. Southwest wind around 7 mph.
Wednesday
Showers. High near 80. West northwest wind 5 to 7 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday Night
Showers likely, mainly after 1am. Mostly cloudy, with a low around 61. Northeast wind around 8 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
Showers likely, then showers and possibly a thunderstorm after 1pm. High near 77. East wind 8 to 11 mph becoming southwest in the afternoon. Winds could gust as high as 16 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
A 40 percent chance of showers before 1am. Mostly cloudy, with a low around 49. Breezy.
Friday
Mostly sunny, with a high near 61. Breezy.
Friday Night
Mostly clear, with a low around 35.
Saturday
Sunny, with a high near 60.
Saturday Night
Clear, with a low around 35.
Sunday
Sunny, with a high near 67.
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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:
4:36 am CDT Oct 12, 2026
Forecast Valid:
5am CDT Oct 12, 2026-6pm CDT Oct 18, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation