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

Hazardous Weather Conditions

Current conditions at

Macomb Municipal Airport (KMQB)

Lat: 40.52°NLon: 90.65°WElev: 679ft.

Fair

84°F

29°C

Humidity 88%
Wind Speed S 3 mph
Barometer 29.92 in
Dewpoint 80°F (27°C)
Visibility 10.00 mi
Heat Index97°F (36°C)
Last update 4 Sep 7:35 pm CDT
Extended Forecast for

Lewistown IL

Extreme Heat Warning September 4, 08:01pm until September 5, 07:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning September 4, 08:01pm until September 5, 07:00pm

    NOW until 7:00pm Sat

    Extreme Heat Warning

  • Tonight

    Low: 73 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 97. Heat index values as high as 107. Calm wind becoming north 5 to 7 mph in the afternoon.

    High: 97 °F

    Hot

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 68. East northeast wind 3 to 6 mph.

    Low: 68 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 88. East northeast wind 3 to 6 mph.

    High: 88 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 63. East wind around 6 mph becoming calm after midnight. Winds could gust as high as 15 mph.

    Low: 63 °F

    Mostly Clear

  • Labor Day

    Labor Day: Sunny, with a high near 87. Calm wind becoming east southeast around 5 mph in the morning.

    High: 87 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 64. East wind 3 to 6 mph. Winds could gust as high as 15 mph.

    Low: 64 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny and hot, with a high near 95.

    High: 95 °F

    Hot

Detailed Forecast

Tonight
Mostly clear, with a low around 73. Calm wind.
Saturday
Sunny and hot, with a high near 97. Heat index values as high as 107. Calm wind becoming north 5 to 7 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 68. East northeast wind 3 to 6 mph.
Sunday
Mostly sunny, with a high near 88. East northeast wind 3 to 6 mph.
Sunday Night
Mostly clear, with a low around 63. East wind around 6 mph becoming calm after midnight. Winds could gust as high as 15 mph.
Labor Day
Sunny, with a high near 87. Calm wind becoming east southeast around 5 mph in the morning.
Monday Night
Mostly clear, with a low around 64. East wind 3 to 6 mph. Winds could gust as high as 15 mph.
Tuesday
Mostly sunny and hot, with a high near 95.
Tuesday Night
Mostly clear, with a low around 74.
Wednesday
Mostly sunny and hot, with a high near 96.
Wednesday Night
A chance of showers. Partly cloudy, with a low around 69.
Thursday
Mostly sunny, with a high near 87.
Thursday Night
Partly cloudy, with a low around 62.
Friday
Mostly sunny, with a high near 88.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lewistown IL
 40.38°N 90.15°W (Elev. 577 ft)
Last Update:
7:36 pm CDT Sep 4, 2026
Forecast Valid:
8pm CDT Sep 4, 2026-6pm CDT Sep 11, 2026
 
Forecast Discussion
 
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Additional Resources

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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