Dangerous Heat Builds and Expands; Critical Fire Weather for the Southwest; Severe Thunderstorms for Plains and Midwest

Dangerous to record breaking heat will build across the center of the nation and slowly build eastward this week. Wildfire conditions remain critical for the Southwest and portions of the Great Basin through Monday. For the northern Plains and upper Midwest, severe thunderstorms with the potential for large to very large hail and severe winds are the primary hazards. Read More >

Current conditions at

Effingham, Effingham County Memorial Airport (K1H2)

Lat: 39.07°NLon: 88.53°WElev: 587ft.

Fog/Mist

73°F

23°C

Humidity 100%
Wind Speed E 6 mph
Barometer 30.01 in
Dewpoint 73°F (23°C)
Visibility 4.00 mi
Last update 29 Jun 5:35 am CDT
Extended Forecast for

7 Miles N Louisville IL

Heat Advisory June 29, 11:00am until July 3, 12:00am
Click here for hazard details and duration
Heat Advisory
  • Today

    Today: Mostly sunny, with a high near 92. Heat index values as high as 106. South wind 5 to 11 mph, with gusts as high as 17 mph.

    High: 92 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 74. South wind 5 to 9 mph, with gusts as high as 16 mph.

    Low: 74 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 94. Heat index values as high as 109. South southwest wind 5 to 8 mph.

    High: 94 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 73. South southwest wind 3 to 7 mph.

    Low: 73 °F

    Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 95. South southwest wind 3 to 6 mph.

    High: 95 °F

    Hot

  • Wednesday Night

    Wednesday Night: Clear, with a low around 74. South wind around 5 mph becoming calm  after midnight.

    Low: 74 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 94. Calm wind becoming south southwest around 6 mph in the morning.

    High: 94 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 75.

    Low: 75 °F

    Mostly Clear

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms before 1pm.  Mostly sunny, with a high near 92.

    High: 92 °F

    Chance
    T-storms

Detailed Forecast

Today
Mostly sunny, with a high near 92. Heat index values as high as 106. South wind 5 to 11 mph, with gusts as high as 17 mph.
Tonight
Mostly clear, with a low around 74. South wind 5 to 9 mph, with gusts as high as 16 mph.
Tuesday
Sunny, with a high near 94. Heat index values as high as 109. South southwest wind 5 to 8 mph.
Tuesday Night
Clear, with a low around 73. South southwest wind 3 to 7 mph.
Wednesday
Sunny and hot, with a high near 95. South southwest wind 3 to 6 mph.
Wednesday Night
Clear, with a low around 74. South wind around 5 mph becoming calm after midnight.
Thursday
Sunny, with a high near 94. Calm wind becoming south southwest around 6 mph in the morning.
Thursday Night
Mostly clear, with a low around 75.
Friday
A 30 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 92.
Friday Night
Partly cloudy, with a low around 75.
Independence Day
Mostly sunny, with a high near 92.
Saturday Night
Mostly clear, with a low around 73.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 89.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
7 Miles N Louisville IL
 38.87°N 88.51°W (Elev. 518 ft)
2:46 am CDT Jun 29, 2026
5am CDT Jun 29, 2026-6pm CDT Jul 5, 2026
 
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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