Dangerous Heat in the Southwest; Severe Thunderstorms and Heavy Rain in the Northeast and Mid-Atlantic

Dangerous heat will persist across the Southwest U.S. through Friday with daytime highs of 110-115°F. Heat across the southern Plains will briefly ease to near-normal by late week. Strong to severe thunderstorms may produce damaging wind, hail, a tornado or two, heavy rain and flash flooding across parts of the Mid-Atlantic and Northeast. Heavy rainfall threat continues across the Gulf Coast. Read More >

Current conditions at

Monroe Municipal Airport (KEFT)

Lat: 42.62°NLon: 89.59°WElev: 1082ft.

Partly Cloudy

82°F

28°C

Humidity 49%
Wind Speed NW 7 mph
Barometer 30.05 in
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 27 Aug 12:35 pm CDT
Extended Forecast for

Lake Summerset IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 79. North northwest wind 5 to 10 mph.

    High: 79 °F

    Mostly Sunny

  • Tonight

    Tonight: Patchy fog after 2am.  Otherwise, mostly clear, with a low around 58. North northwest wind around 5 mph becoming calm.

    Low: 58 °F

    Mostly Clear
    then Patchy
    Fog

  • Friday

    Friday: Patchy fog before 8am.  Otherwise, sunny, with a high near 81. Calm wind becoming west around 5 mph in the afternoon.

    High: 81 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 61. Calm wind becoming south around 5 mph after midnight. Winds could gust as high as 10 mph.

    Low: 61 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 78. South wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 78 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: A 50 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 66.

    Low: 66 °F

    Chance
    Showers then
    Chance
    T-storms

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms before 1pm.  Partly sunny, with a high near 85.

    High: 85 °F

    Slight Chance
    T-storms

  • Sunday Night

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

    Low: 70 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Monday

    Monday: A chance of showers and thunderstorms before 1pm.  Partly sunny, with a high near 86.

    High: 86 °F

    Chance
    T-storms

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 79. North northwest wind 5 to 10 mph.
Tonight
Patchy fog after 2am. Otherwise, mostly clear, with a low around 58. North northwest wind around 5 mph becoming calm.
Friday
Patchy fog before 8am. Otherwise, sunny, with a high near 81. Calm wind becoming west around 5 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 61. Calm wind becoming south around 5 mph after midnight. Winds could gust as high as 10 mph.
Saturday
Mostly cloudy, with a high near 78. South wind 5 to 15 mph, with gusts as high as 20 mph.
Saturday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 66.
Sunday
A 20 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 85.
Sunday Night
A chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 70.
Monday
A chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 86.
Monday Night
A chance of showers after 1am. Partly cloudy, with a low around 70.
Tuesday
A chance of showers. Mostly sunny, with a high near 85.
Tuesday Night
A chance of showers. Partly cloudy, with a low around 68.
Wednesday
Mostly sunny, with a high near 84.
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ABOUT THIS FORECAST

 
Point Forecast:
Lake Summerset IL
 42.44°N 89.4°W
9:31 am CDT Aug 27, 2026
12pm CDT Aug 27, 2026-6pm CDT Sep 2, 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