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

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 >

Hazardous Weather Conditions

Current conditions at

Effingham, Effingham County Memorial Airport (K1H2)

Lat: 39.07°NLon: 88.53°WElev: 587ft.

Partly Cloudy

91°F

33°C

Humidity 58%
Wind Speed SE 3 mph
Barometer 30.12 in
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index101°F (38°C)
Last update 15 Aug 1:35 pm CDT
Extended Forecast for

Dieterich IL

Heat Advisory August 16, 12:00pm until August 17, 08:00pm
Click here for hazard details and duration
Heat Advisory

  • This Afternoon

    This Afternoon: Sunny, with a high near 92. Heat index values as high as 100. South wind 3 to 5 mph.

    High: 92 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 72. Southeast wind around 6 mph.

    Low: 72 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 94. Heat index values as high as 103. South southwest wind 3 to 6 mph.

    High: 94 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 73. Calm wind.

    Low: 73 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny and hot, with a high near 95. Light southwest wind.

    High: 95 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 73. Calm wind.

    Low: 73 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 95. Calm wind becoming south around 5 mph in the afternoon.

    High: 95 °F

    Hot

  • Monday Night

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

    Low: 74 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 95.

    High: 95 °F

    Hot

Detailed Forecast

This Afternoon
Sunny, with a high near 92. Heat index values as high as 100. South wind 3 to 5 mph.
Tonight
Mostly clear, with a low around 72. Southeast wind around 6 mph.
Saturday
Sunny, with a high near 94. Heat index values as high as 103. South southwest wind 3 to 6 mph.
Saturday Night
Partly cloudy, with a low around 73. Calm wind.
Sunday
Sunny and hot, with a high near 95. Light southwest wind.
Sunday Night
Mostly clear, with a low around 73. Calm wind.
Monday
Sunny and hot, with a high near 95. Calm wind becoming south around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 74.
Tuesday
Sunny and hot, with a high near 95.
Tuesday Night
A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 71.
Wednesday
Mostly sunny, with a high near 86.
Wednesday Night
Partly cloudy, with a low around 66.
Thursday
Sunny, with a high near 85.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Dieterich IL
 39.07°N 88.36°W (Elev. 597 ft)
Last Update:
1:11 pm CDT Aug 15, 2025
Forecast Valid:
1pm CDT Aug 15, 2025-6pm CDT Aug 21, 2025
 
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