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

Macomb Municipal Airport (KMQB)

Lat: 40.52°NLon: 90.65°WElev: 679ft.

Fair

80°F

27°C

Humidity 35%
Wind Speed W 10 mph
Barometer 29.88 in
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 16 Apr 4:55 pm CDT
Extended Forecast for

Lewistown IL

  • Tonight

    Tonight: Clear, with a low around 56. West wind around 5 mph becoming calm.

    Low: 56 °F

    Clear

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms, mainly after 5pm. Mostly sunny, with a high near 84. South wind 6 to 11 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 31 mph.

    High: 84 °F

    Mostly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: Showers and thunderstorms before 4am, then a chance of showers. Low around 43. South wind around 15 mph becoming west northwest after midnight. Winds could gust as high as 29 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

    Low: 43 °F

    T-storms then
    Showers

  • Saturday

    Saturday: A 30 percent chance of showers before 1pm. Mostly cloudy, then gradually becoming sunny, with a high near 54. West northwest wind 15 to 18 mph, with gusts as high as 28 mph.

    High: 54 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: Patchy frost after 3am. Otherwise, mostly clear, with a low around 36. West wind 6 to 14 mph, with gusts as high as 25 mph.

    Low: 36 °F

    Mostly Clear
    then Patchy
    Frost

  • Sunday

    Sunday: Patchy frost before 8am. Otherwise, sunny, with a high near 58. Northwest wind 6 to 15 mph, with gusts as high as 24 mph.

    High: 58 °F

    Patchy Frost
    then Sunny

  • Sunday Night

    Sunday Night: Patchy frost after 3am. Otherwise, mostly clear, with a low around 36. North northwest wind 5 to 7 mph becoming light and variable after midnight. Winds could gust as high as 16 mph.

    Low: 36 °F

    Mostly Clear
    then Patchy
    Frost

  • Monday

    Monday: Patchy frost before 8am. Otherwise, sunny, with a high near 67.

    High: 67 °F

    Patchy Frost
    then Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 51.

    Low: 51 °F

    Mostly Clear

Detailed Forecast

Tonight
Clear, with a low around 56. West wind around 5 mph becoming calm.
Friday
A 30 percent chance of showers and thunderstorms, mainly after 5pm. Mostly sunny, with a high near 84. South wind 6 to 11 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 31 mph.
Friday Night
Showers and thunderstorms before 4am, then a chance of showers. Low around 43. South wind around 15 mph becoming west northwest after midnight. Winds could gust as high as 29 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Saturday
A 30 percent chance of showers before 1pm. Mostly cloudy, then gradually becoming sunny, with a high near 54. West northwest wind 15 to 18 mph, with gusts as high as 28 mph.
Saturday Night
Patchy frost after 3am. Otherwise, mostly clear, with a low around 36. West wind 6 to 14 mph, with gusts as high as 25 mph.
Sunday
Patchy frost before 8am. Otherwise, sunny, with a high near 58. Northwest wind 6 to 15 mph, with gusts as high as 24 mph.
Sunday Night
Patchy frost after 3am. Otherwise, mostly clear, with a low around 36. North northwest wind 5 to 7 mph becoming light and variable after midnight. Winds could gust as high as 16 mph.
Monday
Patchy frost before 8am. Otherwise, sunny, with a high near 67.
Monday Night
Mostly clear, with a low around 51.
Tuesday
Mostly sunny, with a high near 75.
Tuesday Night
Mostly clear, with a low around 54.
Wednesday
Sunny, with a high near 78.
Wednesday Night
Mostly clear, with a low around 54.
Thursday
A chance of showers. Mostly sunny, with a high near 77.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lewistown IL
 40.41°N 90.15°W (Elev. 568 ft)
Last Update:
4:36 pm CDT Apr 16, 2026
Forecast Valid:
5pm CDT Apr 16, 2026-6pm CDT Apr 23, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation