Heavy Rain Threatens the Mid-Atlantic on Sunday While Fire Weather Conditions Worsen in the Southwest

Heavy rain is bringing a flash flood risk to parts of the Mid-Atlantic on Sunday. This activity will diminish overnight. On Monday, the focus shifts into the Plains and Mississippi Valley where severe thunderstorms and heavy rains will be possible through Tuesday. Meanwhile, hot conditions and Critical Fire Weather looms over the Great Basin and Southwest U.S. through midweek. Read More >

Hazardous Weather Conditions

Current conditions at

Marshalltown, Marshalltown Municipal Airport (KMIW)

Lat: 42.11°NLon: 92.92°WElev: 971ft.

Mostly Cloudy

79°F

26°C

Humidity 72%
Wind Speed SE 9 mph
Barometer 30.02 in (1015.9 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 15 Jun 5:53 pm CDT
Extended Forecast for

Union IA

  • Tonight

    Tonight: Scattered showers and thunderstorms, mainly before 1am.  Mostly cloudy, with a low around 65. South southeast wind 3 to 5 mph.  Chance of precipitation is 40%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 65 °F

    Scattered
    T-storms

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms before 1pm.  Partly sunny, with a high near 87. South wind 5 to 10 mph.

    High: 87 °F

    Slight Chance
    T-storms

  • Monday Night

    Monday Night: A 40 percent chance of showers and thunderstorms.  Partly cloudy, with a low around 68. South wind 7 to 9 mph.  New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 68 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: Showers and thunderstorms likely, mainly after 1pm.  Partly sunny, with a high near 84. West southwest wind around 6 mph.  Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    High: 84 °F

    Chance
    T-storms then
    T-storms
    Likely

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm.  Low around 65. North wind around 7 mph becoming east after midnight.  Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 65 °F

    T-storms then
    Showers

  • Wednesday

    Wednesday: A 50 percent chance of showers and thunderstorms.  Partly sunny, with a high near 82. New rainfall amounts between a quarter and half of an inch possible.

    High: 82 °F

    Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms before 1am.  Partly cloudy, with a low around 60.

    Low: 60 °F

    Slight Chance
    T-storms

  • Juneteenth

    Juneteenth: Sunny, with a high near 84.

    High: 84 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

Detailed Forecast

Tonight
Scattered showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 65. South southeast wind 3 to 5 mph. Chance of precipitation is 40%. New rainfall amounts between a quarter and half of an inch possible.
Monday
A 20 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 87. South wind 5 to 10 mph.
Monday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68. South wind 7 to 9 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday
Showers and thunderstorms likely, mainly after 1pm. Partly sunny, with a high near 84. West southwest wind around 6 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday Night
Showers and possibly a thunderstorm. Low around 65. North wind around 7 mph becoming east after midnight. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Wednesday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 82. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 60.
Juneteenth
Sunny, with a high near 84.
Thursday Night
Mostly clear, with a low around 63.
Friday
Sunny, with a high near 87. Breezy.
Friday Night
Mostly clear, with a low around 72. Breezy.
Saturday
Sunny, with a high near 92. Breezy.
Saturday Night
Mostly clear, with a low around 73.
Sunday
Sunny, with a high near 92. Windy.
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ABOUT THIS FORECAST

 
Point Forecast:
Union IA
 42.26°N 93.06°W
5:38 pm CDT Jun 15, 2025
6pm CDT Jun 15, 2025-6pm CDT Jun 22, 2025
 
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Additional Resources

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Hourly Weather Forecast

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