Erin Strengthens to a Hurricane; Heavy Rainfall Possible in Puerto Rico and the Virgin Islands, the Upper Midwest, South Texas

Hurricane Erin may bring isolated flash and urban flooding, landslides or mudslides, and possible tropical storm conditions to Puerto Rico and the U.S. Virgin Islands this weekend. Scattered thunderstorms and heavy rainfall may bring areas of flooding this weekend over the Upper Midwest. A tropical disturbance will bring locally heavy rain and mainly urban flash flooding to far southern Texas. Read More >

Current conditions at

Pontiac Municipal Airport (KPNT)

Lat: 40.92°NLon: 88.62°WElev: 650ft.

Fair

88°F

31°C

Humidity 69%
Wind Speed S 7 mph
Barometer 30.06 in
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index100°F (38°C)
Last update 16 Aug 11:55 am CDT
Extended Forecast for

4 Miles SSE Campus IL

Heat Advisory until August 16, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory until August 16, 08:00pm

    NOW until 8:00pm Sat

    Heat Advisory

  • This Afternoon

    High: 92 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly before 4am.  Partly cloudy, with a low around 73. Southwest wind around 5 mph becoming south southeast after midnight.

    Low: 73 °F

    Chance
    T-storms

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms.  Mostly sunny, with a high near 87. Heat index values as high as 98. Southeast wind around 5 mph becoming east northeast in the afternoon.

    High: 87 °F

    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 72. Northeast wind around 5 mph becoming southeast after midnight.

    Low: 72 °F

    Partly Cloudy

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 1pm.  Sunny, with a high near 94. South southwest wind around 5 mph, with gusts as high as 15 mph.

    High: 94 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: A 30 percent chance of showers and thunderstorms, mainly after 1am.  Partly cloudy, with a low around 72.

    Low: 72 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms, mainly after 1pm.  Mostly sunny, with a high near 91.

    High: 91 °F

    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 67.

    Low: 67 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 92. Heat index values as high as 104. Southwest wind around 5 mph, with gusts as high as 15 mph.
Tonight
A 40 percent chance of showers and thunderstorms, mainly before 4am. Partly cloudy, with a low around 73. Southwest wind around 5 mph becoming south southeast after midnight.
Sunday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87. Heat index values as high as 98. Southeast wind around 5 mph becoming east northeast in the afternoon.
Sunday Night
Partly cloudy, with a low around 72. Northeast wind around 5 mph becoming southeast after midnight.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 94. South southwest wind around 5 mph, with gusts as high as 15 mph.
Monday Night
A 30 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 72.
Tuesday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 91.
Tuesday Night
Mostly cloudy, with a low around 67.
Wednesday
Partly sunny, with a high near 80.
Wednesday Night
Partly cloudy, with a low around 62.
Thursday
Sunny, with a high near 83.
Thursday Night
Mostly clear, with a low around 61.
Friday
Sunny, with a high near 86.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSE Campus IL
 40.98°N 88.26°W
10:56 am CDT Aug 16, 2025
12pm CDT Aug 16, 2025-6pm CDT Aug 22, 2025
 
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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