Heat Wave Expands to the East Coast; Flash Flooding Likely in the Central Plains into the Midwest; Severe Thunderstorms in the Northeast

Dangerous, prolonged heat is ongoing in the Mid-South to Mid-Mississippi Valley and heat expands into the Northeast for a brief period today. Widely scattered instances of flash flooding due to heavy rains are forecast from northeast Kansas to much of Indiana. Scattered strong to severe thunderstorms are possible across parts of New England, northern Mid-Atlantic, and North Dakota. Read More >

Hazardous Weather Conditions

Current conditions at

Pontiac Municipal Airport (KPNT)

Lat: 40.92°NLon: 88.62°WElev: 650ft.

Partly Cloudy

71°F

22°C

Humidity 97%
Wind Speed S 6 mph
Barometer 29.99 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 26 Jul 3:35 am CDT
Extended Forecast for

Cornell IL

  • Overnight

    Overnight: A 50 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 73. South wind around 5 mph.

    Low: 73 °F

    Chance
    T-storms

  • Saturday

    Saturday: Showers and thunderstorms likely before 11am, then showers likely and possibly a thunderstorm between 11am and 1pm, then showers and thunderstorms likely after 1pm.  Mostly cloudy, with a high near 85. Light south wind becoming south southwest 5 to 10 mph in the morning.  Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 85 °F

    T-storms
    Likely

  • Saturday Night

    Saturday Night: A 50 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 73. West southwest wind around 5 mph becoming north northeast in the evening.

    Low: 73 °F

    Chance
    T-storms

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms.  Mostly sunny, with a high near 90. Heat index values as high as 107. Calm wind becoming west southwest around 5 mph in the afternoon. Winds could gust as high as 10 mph.

    High: 90 °F

    Chance
    T-storms

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 74. West southwest wind around 5 mph becoming calm.

    Low: 74 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 92.

    High: 92 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 74.

    Low: 74 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 91.

    High: 91 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms after 1am.  Partly cloudy, with a low around 70.

    Low: 70 °F

    Mostly Clear
    then Chance
    T-storms

Detailed Forecast

Overnight
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 73. South wind around 5 mph.
Saturday
Showers and thunderstorms likely before 11am, then showers likely and possibly a thunderstorm between 11am and 1pm, then showers and thunderstorms likely after 1pm. Mostly cloudy, with a high near 85. Light south wind becoming south southwest 5 to 10 mph in the morning. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.
Saturday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 73. West southwest wind around 5 mph becoming north northeast in the evening.
Sunday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90. Heat index values as high as 107. Calm wind becoming west southwest around 5 mph in the afternoon. Winds could gust as high as 10 mph.
Sunday Night
Partly cloudy, with a low around 74. West southwest wind around 5 mph becoming calm.
Monday
Sunny, with a high near 92.
Monday Night
Mostly clear, with a low around 74.
Tuesday
Mostly sunny, with a high near 91.
Tuesday Night
A chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 70.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 84.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 64.
Thursday
Mostly sunny, with a high near 77.
Thursday Night
Partly cloudy, with a low around 58.
Friday
Sunny, with a high near 77.
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ABOUT THIS FORECAST

 
Point Forecast:
Cornell IL
 40.98°N 88.73°W
3:41 am CDT Jul 26, 2025
3am CDT Jul 26, 2025-6pm CDT Aug 1, 2025
 
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Additional Resources

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