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.

Overcast

36°F

2°C

Humidity 73%
Wind Speed E 9 mph
Barometer 30.12 in
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 14 Mar 5:15 am CDT
Extended Forecast for

Marietta IL

  • Overnight

    Overnight: A 20 percent chance of snow. Mostly cloudy, with a low around 31. East northeast wind around 5 mph.

    Low: 31 °F

    Slight Chance
    Snow

  • Saturday

    Saturday: A 10 percent chance of snow before 7am. Partly sunny, with a high near 53. East southeast wind 6 to 16 mph, with gusts as high as 24 mph.

    High: 53 °F

    Slight Chance
    Snow then
    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 45. East southeast wind 13 to 17 mph, with gusts as high as 28 mph.

    Low: 45 °F

    Mostly Cloudy

  • Sunday

    Sunday: Rain, mainly after 7am. High near 64. Breezy, with a south wind 18 to 23 mph, with gusts as high as 38 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 64 °F

    Breezy. Rain
    Likely then
    Rain

  • Sunday Night

    Sunday Night: Rain before 10pm, then snow. Widespread blowing snow, mainly after 3am. Low around 15. Windy, with a northwest wind 23 to 31 mph, with gusts as high as 44 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

    Low: 15 °F

    Rain/Snow and
    Patchy
    Blowing Snow
    then Snow and
    Blowing Snow

  • Monday

    Monday: A 40 percent chance of snow before 1pm. Widespread blowing snow, mainly before 7am. Cloudy, with a high near 23. Windy, with a west northwest wind 25 to 30 mph, with gusts as high as 45 mph.

    High: 23 °F

    Chance Snow
    and Blowing
    Snow

  • Monday Night

    Monday Night: Partly cloudy, with a low around 5. Blustery, with a west northwest wind 11 to 20 mph, with gusts as high as 31 mph.

    Low: 5 °F

    Partly Cloudy
    and Blustery
    then Mostly
    Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 29.

    High: 29 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Snow likely before 1am, then a chance of rain and snow. Mostly cloudy, with a low around 23. Chance of precipitation is 60%.

    Low: 23 °F

    Snow Likely
    then
    Rain/Snow
    Likely

Detailed Forecast

Overnight
A 20 percent chance of snow. Mostly cloudy, with a low around 31. East northeast wind around 5 mph.
Saturday
A 10 percent chance of snow before 7am. Partly sunny, with a high near 53. East southeast wind 6 to 16 mph, with gusts as high as 24 mph.
Saturday Night
Mostly cloudy, with a low around 45. East southeast wind 13 to 17 mph, with gusts as high as 28 mph.
Sunday
Rain, mainly after 7am. High near 64. Breezy, with a south wind 18 to 23 mph, with gusts as high as 38 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
Rain before 10pm, then snow. Widespread blowing snow, mainly after 3am. Low around 15. Windy, with a northwest wind 23 to 31 mph, with gusts as high as 44 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.
Monday
A 40 percent chance of snow before 1pm. Widespread blowing snow, mainly before 7am. Cloudy, with a high near 23. Windy, with a west northwest wind 25 to 30 mph, with gusts as high as 45 mph.
Monday Night
Partly cloudy, with a low around 5. Blustery, with a west northwest wind 11 to 20 mph, with gusts as high as 31 mph.
Tuesday
Mostly sunny, with a high near 29.
Tuesday Night
Snow likely before 1am, then a chance of rain and snow. Mostly cloudy, with a low around 23. Chance of precipitation is 60%.
Wednesday
Mostly sunny, with a high near 55.
Wednesday Night
Mostly clear, with a low around 33.
Thursday
Mostly sunny, with a high near 64.
Thursday Night
Partly cloudy, with a low around 41.
Friday
Sunny, with a high near 64.
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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:
5:06 am CDT Mar 14, 2026
Forecast Valid:
5am CDT Mar 14, 2026-6pm CDT Mar 20, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation