National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Pontiac Municipal Airport (KPNT)

Lat: 40.92°NLon: 88.62°WElev: 650ft.

Fair

47°F

8°C

Humidity 44%
Wind Speed NA
Barometer 30.14 in
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Last update 2 May 9:35 am CDT
Extended Forecast for

Cullom IL

  • Today

    Today: Mostly sunny, with a high near 57. Light north northwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 15 mph.

    High: 57 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 40. West northwest wind 5 to 10 mph becoming southwest in the evening.

    Low: 40 °F

    Mostly Clear

  • Sunday

    Sunday: A 40 percent chance of showers, mainly before 1pm. Mostly cloudy, with a high near 67. Breezy, with a southwest wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 35 mph.

    High: 67 °F

    Chance
    Showers and
    Breezy

  • Sunday Night

    Sunday Night: A slight chance of showers between 7pm and 1am. Partly cloudy, with a low around 45. West southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    Low: 45 °F

    Slight Chance
    Showers

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 4pm. Sunny, with a high near 77. Breezy, with a southwest wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 77 °F

    Sunny then
    Slight Chance
    T-storms and
    Breezy

  • Monday Night

    Monday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 51. Chance of precipitation is 50%.

    Low: 51 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A chance of showers before 7am, then a chance of showers and thunderstorms between 7am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 61. Chance of precipitation is 70%.

    High: 61 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers likely, mainly before 1am. Mostly cloudy, with a low around 42.

    Low: 42 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A chance of showers after 1pm. Mostly cloudy, with a high near 58.

    High: 58 °F

    Mostly Cloudy
    then Chance
    Showers

Detailed Forecast

Today
Mostly sunny, with a high near 57. Light north northwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 15 mph.
Tonight
Mostly clear, with a low around 40. West northwest wind 5 to 10 mph becoming southwest in the evening.
Sunday
A 40 percent chance of showers, mainly before 1pm. Mostly cloudy, with a high near 67. Breezy, with a southwest wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 35 mph.
Sunday Night
A slight chance of showers between 7pm and 1am. Partly cloudy, with a low around 45. West southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Monday
A 20 percent chance of showers and thunderstorms after 4pm. Sunny, with a high near 77. Breezy, with a southwest wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 25 mph.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 51. Chance of precipitation is 50%.
Tuesday
A chance of showers before 7am, then a chance of showers and thunderstorms between 7am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 61. Chance of precipitation is 70%.
Tuesday Night
Showers likely, mainly before 1am. Mostly cloudy, with a low around 42.
Wednesday
A chance of showers after 1pm. Mostly cloudy, with a high near 58.
Wednesday Night
A chance of showers before 1am. Mostly cloudy, with a low around 40.
Thursday
Partly sunny, with a high near 59.
Thursday Night
Partly cloudy, with a low around 40.
Friday
Mostly sunny, with a high near 65.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Cullom IL
 40.87°N 88.27°W
Last Update:
9:06 am CDT May 2, 2026
Forecast Valid:
9am CDT May 2, 2026-6pm CDT May 8, 2026
 
Forecast Discussion
 
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Additional Resources

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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