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Severe Thunderstorms and Heavy Rainfall; Typhoon Watch in Guam and CNMI

Heavy to excessive rainfall will continue through tonight from the Texas Big Bend region into southern Oklahoma. Scattered damaging wind gusts and a few tornadoes may accompany a line of severe thunderstorms that is expected across the Mid-Atlantic into New England Friday. A Typhoon Watch continues for Guam and CNMI as Tropical Storm Champi will strengthen and approach the islands this weekend. Read More >

Hazardous Weather Conditions

Current conditions at

Marshalltown, Marshalltown Municipal Airport (KMIW)

Lat: 42.11°NLon: 92.92°WElev: 971ft.

Overcast

50°F

10°C

Humidity 89%
Wind Speed NW 16 mph
Barometer 30.04 in (1017.3 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Wind Chill44°F (7°C)
Last update 15 Oct 7:53 pm CDT
Extended Forecast for

Grundy Center IA

Freeze Watch October 17, 01:00am until October 17, 09:00am
Click here for hazard details and duration
Freeze Watch

  • Tonight

    Tonight: A 30 percent chance of rain, mainly between 9pm and 10pm. Cloudy during the early evening, then gradual clearing, with a low around 42. Windy, with a northwest wind 18 to 21 mph, with gusts as high as 30 mph. New precipitation amounts of less than a tenth of an inch possible.

    Low: 42 °F

    Chance Rain
    and Breezy
    then
    Increasing
    Clouds and
    Windy

  • Friday

    Friday: A 20 percent chance of rain before 10am. Cloudy, with a high near 51. Windy, with a north wind 23 to 28 mph, with gusts as high as 39 mph.

    High: 51 °F

    Windy. Slight
    Chance Rain
    then Mostly
    Cloudy

  • Friday Night

    Friday Night: Widespread frost, mainly after 4am. Otherwise, mostly cloudy, then gradually becoming clear, with a low around 30. North wind 6 to 11 mph becoming light and variable after midnight.

    Low: 30 °F

    Decreasing
    Clouds then
    Frost

  • Saturday

    Saturday: Widespread frost before 9am. Otherwise, sunny, with a high near 57. Light southwest wind becoming south southwest 9 to 14 mph in the morning. Winds could gust as high as 18 mph.

    High: 57 °F

    Frost then
    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 39. South wind 9 to 13 mph, with gusts as high as 18 mph.

    Low: 39 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 64. Breezy.

    High: 64 °F

    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 43.

    Low: 43 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 66.

    High: 66 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 45.

    Low: 45 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 30 percent chance of rain, mainly between 9pm and 10pm. Cloudy during the early evening, then gradual clearing, with a low around 42. Windy, with a northwest wind 18 to 21 mph, with gusts as high as 30 mph. New precipitation amounts of less than a tenth of an inch possible.
Friday
A 20 percent chance of rain before 10am. Cloudy, with a high near 51. Windy, with a north wind 23 to 28 mph, with gusts as high as 39 mph.
Friday Night
Widespread frost, mainly after 4am. Otherwise, mostly cloudy, then gradually becoming clear, with a low around 30. North wind 6 to 11 mph becoming light and variable after midnight.
Saturday
Widespread frost before 9am. Otherwise, sunny, with a high near 57. Light southwest wind becoming south southwest 9 to 14 mph in the morning. Winds could gust as high as 18 mph.
Saturday Night
Clear, with a low around 39. South wind 9 to 13 mph, with gusts as high as 18 mph.
Sunday
Sunny, with a high near 64. Breezy.
Sunday Night
Mostly clear, with a low around 43.
Monday
Mostly sunny, with a high near 66.
Monday Night
Partly cloudy, with a low around 45.
Tuesday
Mostly sunny, with a high near 70.
Tuesday Night
Mostly clear, with a low around 50.
Wednesday
Mostly sunny, with a high near 73.
Wednesday Night
Partly cloudy, with a low around 54.
Thursday
Partly sunny, with a high near 73.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grundy Center IA
 42.36°N 92.76°W
Last Update:
8:01 pm CDT Oct 15, 2026
Forecast Valid:
8pm CDT Oct 15, 2026-6pm CDT Oct 22, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation