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

Marshalltown, Marshalltown Municipal Airport (KMIW)

Lat: 42.11°NLon: 92.92°WElev: 971ft.

Fair

51°F

11°C

Humidity 59%
Wind Speed S 8 mph
Barometer 29.72 in (1007.2 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Wind Chill48°F (9°C)
Last update 7 Jan 2:53 pm CST
Extended Forecast for

Union IA

  • This Afternoon

    This Afternoon: Sunny, with a high near 49. South wind 7 to 9 mph.

    High: 49 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 32. South wind 5 to 7 mph.

    Low: 32 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Rain, mainly after 1pm. High near 44. South southeast wind 5 to 11 mph becoming north in the afternoon. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 44 °F

    Mostly Cloudy
    then Rain

  • Thursday Night

    Thursday Night: Rain before midnight, then a chance of rain and snow. Low around 31. North northwest wind 11 to 13 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

    Low: 31 °F

    Rain then
    Chance
    Rain/Snow

  • Friday

    Friday: A slight chance of rain and snow before 9am, then a slight chance of snow between 9am and noon. Partly sunny, with a high near 38. North wind 8 to 13 mph. Chance of precipitation is 20%.

    High: 38 °F

    Slight Chance
    Rain/Snow
    then Partly
    Sunny

  • Friday Night

    Friday Night: A slight chance of rain and snow before 9pm, then a chance of snow. Mostly cloudy, with a low around 26. Chance of precipitation is 30%.

    Low: 26 °F

    Slight Chance
    Rain/Snow
    then Chance
    Snow

  • Saturday

    Saturday: A 30 percent chance of snow. Partly sunny, with a high near 31. Blustery.

    High: 31 °F

    Chance Snow
    and Blustery

  • Saturday Night

    Saturday Night: A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 14. Blustery.

    Low: 14 °F

    Blustery.
    Slight Chance
    Snow then
    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 28.

    High: 28 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 49. South wind 7 to 9 mph.
Tonight
Increasing clouds, with a low around 32. South wind 5 to 7 mph.
Thursday
Rain, mainly after 1pm. High near 44. South southeast wind 5 to 11 mph becoming north in the afternoon. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Thursday Night
Rain before midnight, then a chance of rain and snow. Low around 31. North northwest wind 11 to 13 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Friday
A slight chance of rain and snow before 9am, then a slight chance of snow between 9am and noon. Partly sunny, with a high near 38. North wind 8 to 13 mph. Chance of precipitation is 20%.
Friday Night
A slight chance of rain and snow before 9pm, then a chance of snow. Mostly cloudy, with a low around 26. Chance of precipitation is 30%.
Saturday
A 30 percent chance of snow. Partly sunny, with a high near 31. Blustery.
Saturday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 14. Blustery.
Sunday
Mostly sunny, with a high near 28.
Sunday Night
Partly cloudy, with a low around 21.
Monday
Mostly sunny, with a high near 43.
Monday Night
Mostly cloudy, with a low around 29.
Tuesday
Mostly cloudy, with a high near 42.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Union IA
 42.23°N 93.06°W
Last Update:
2:06 pm CST Jan 7, 2026
Forecast Valid:
3pm CST Jan 7, 2026-6pm CST Jan 13, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation