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

56°F

13°C

Humidity 36%
Wind Speed NW 16 G 21 mph
Barometer 30.05 in
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Last update 6 May 12:35 pm CDT
Extended Forecast for

Marietta IL

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 59. Northwest wind 11 to 14 mph, with gusts as high as 22 mph.

    High: 59 °F

    Mostly Cloudy

  • Tonight

    Tonight: Patchy frost after 4am. Otherwise, partly cloudy, with a low around 37. North northwest wind around 6 mph becoming calm in the evening.

    Low: 37 °F

    Partly Cloudy
    then Patchy
    Frost

  • Thursday

    Thursday: A slight chance of showers between noon and 1pm, then a chance of showers and thunderstorms after 1pm. Patchy frost before 7am. Otherwise, mostly sunny, with a high near 66. Light southwest wind becoming west 10 to 15 mph in the morning. Winds could gust as high as 23 mph. Chance of precipitation is 30%.

    High: 66 °F

    Patchy Frost
    then Chance
    Showers

  • Thursday Night

    Thursday Night: A 30 percent chance of showers before 11pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 46. Southwest wind 5 to 8 mph becoming calm in the evening. Winds could gust as high as 17 mph.

    Low: 46 °F

    Chance
    Showers then
    Partly Cloudy

  • Friday

    Friday: A 50 percent chance of showers after 1pm. Partly sunny, with a high near 68. South southwest wind 3 to 8 mph. Winds could gust as high as 15 mph.

    High: 68 °F

    Partly Sunny
    then Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 46. Light and variable wind.

    Low: 46 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 80. West southwest wind 6 to 13 mph, with gusts as high as 20 mph.

    High: 80 °F

    Sunny

  • Saturday Night

    Saturday Night: Showers likely, mainly after 1am. Mostly cloudy, with a low around 54. Chance of precipitation is 70%.

    Low: 54 °F

    Chance
    Showers then
    Showers
    Likely

  • Sunday

    Sunday: Mostly sunny, with a high near 68.

    High: 68 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 59. Northwest wind 11 to 14 mph, with gusts as high as 22 mph.
Tonight
Patchy frost after 4am. Otherwise, partly cloudy, with a low around 37. North northwest wind around 6 mph becoming calm in the evening.
Thursday
A slight chance of showers between noon and 1pm, then a chance of showers and thunderstorms after 1pm. Patchy frost before 7am. Otherwise, mostly sunny, with a high near 66. Light southwest wind becoming west 10 to 15 mph in the morning. Winds could gust as high as 23 mph. Chance of precipitation is 30%.
Thursday Night
A 30 percent chance of showers before 11pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 46. Southwest wind 5 to 8 mph becoming calm in the evening. Winds could gust as high as 17 mph.
Friday
A 50 percent chance of showers after 1pm. Partly sunny, with a high near 68. South southwest wind 3 to 8 mph. Winds could gust as high as 15 mph.
Friday Night
Partly cloudy, with a low around 46. Light and variable wind.
Saturday
Sunny, with a high near 80. West southwest wind 6 to 13 mph, with gusts as high as 20 mph.
Saturday Night
Showers likely, mainly after 1am. Mostly cloudy, with a low around 54. Chance of precipitation is 70%.
Sunday
Mostly sunny, with a high near 68.
Sunday Night
Mostly clear, with a low around 43.
Monday
Sunny, with a high near 70.
Monday Night
A chance of showers. Partly cloudy, with a low around 50.
Tuesday
Partly sunny, with a high near 77.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Marietta IL
 40.5°N 90.41°W (Elev. 650 ft)
Last Update:
12:36 pm CDT May 6, 2026
Forecast Valid:
12pm CDT May 6, 2026-6pm CDT May 12, 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