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

Risks of Severe Thunderstorms and Excessive Rainfall; Fire Weather Concerns and Record Warmth

Severe thunderstorms and flash flooding risks increase across the center of the nation today. Meanwhile, ongoing thunderstorms and flash flooding will linger along the Gulf Coast states through the evening. The Great Basin and Intermountain West, warm temperatures and dry fuels with dry lightning may enhance fire weather potential. In addition, across interior Alaska, Red Flag Warning are posted. Read More >

Hazardous Weather Conditions

Current conditions at

Pontiac Municipal Airport (KPNT)

Lat: 40.92°NLon: 88.62°WElev: 650ft.

Mostly Cloudy

64°F

18°C

Humidity 90%
Wind Speed NA
Barometer 30.01 in
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 20 Jun 6:35 am CDT
Extended Forecast for

Graymont IL

  • Today

    Today: A 20 percent chance of showers before 7am. Sunny, with a high near 79. West northwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 79 °F

    Slight Chance
    Showers then
    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 59. Northwest wind around 5 mph becoming calm in the evening. Winds could gust as high as 10 mph.

    Low: 59 °F

    Partly Cloudy

  • Sunday

    Sunday: Showers likely, then showers and possibly a thunderstorm after 1pm. Some of the storms could produce heavy rainfall. High near 71. East southeast wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.

    High: 71 °F

    Heavy Rain

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm. Low around 58. Northeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.

    Low: 58 °F

    Showers

  • Monday

    Monday: A 20 percent chance of showers before 1pm. Partly sunny, with a high near 75. North northeast wind around 10 mph, with gusts as high as 20 mph.

    High: 75 °F

    Slight Chance
    Showers

  • Monday Night

    Monday Night: Mostly clear, with a low around 52.

    Low: 52 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 77.

    High: 77 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 57.

    Low: 57 °F

    Mostly Clear

  • Wednesday

    Wednesday: A chance of showers and thunderstorms after 1pm. Sunny, with a high near 78.

    High: 78 °F

    Sunny then
    Chance
    T-storms

Detailed Forecast

Today
A 20 percent chance of showers before 7am. Sunny, with a high near 79. West northwest wind 5 to 10 mph, with gusts as high as 20 mph.
Tonight
Partly cloudy, with a low around 59. Northwest wind around 5 mph becoming calm in the evening. Winds could gust as high as 10 mph.
Sunday
Showers likely, then showers and possibly a thunderstorm after 1pm. Some of the storms could produce heavy rainfall. High near 71. East southeast wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.
Sunday Night
Showers and possibly a thunderstorm. Low around 58. Northeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.
Monday
A 20 percent chance of showers before 1pm. Partly sunny, with a high near 75. North northeast wind around 10 mph, with gusts as high as 20 mph.
Monday Night
Mostly clear, with a low around 52.
Tuesday
Mostly sunny, with a high near 77.
Tuesday Night
Mostly clear, with a low around 57.
Wednesday
A chance of showers and thunderstorms after 1pm. Sunny, with a high near 78.
Wednesday Night
Partly cloudy, with a low around 57.
Thursday
Mostly sunny, with a high near 78.
Thursday Night
Partly cloudy, with a low around 56.
Friday
Mostly sunny, with a high near 78.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Graymont IL
 40.91°N 88.73°W
Last Update:
4:16 am CDT Jun 20, 2026
Forecast Valid:
6am CDT Jun 20, 2026-6pm CDT Jun 26, 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