Severe Thunderstorms and Heavy Rainfall Across the Midwest into the Great Lakes Region; Significant Heat in the Southwest

Strong to severe storms may produce damaging winds, isolated hail, and a few tornadoes from the Midwest into the lower Great Lakes. These storms may also produce areas of heavy rain and flash flooding. Significant heat will continue across parts of the Desert Southwest into western Texas and north Alaska. Dangerous heat will also build into the Eastern and Central U.S. and continue into next week. Read More >

Current conditions at

Marshalltown, Marshalltown Municipal Airport (KMIW)

Lat: 42.11°NLon: 92.92°WElev: 971ft.

Mostly Cloudy

74°F

23°C

Humidity 76%
Wind Speed N 12 mph
Barometer 29.78 in (1007.7 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 18 Jun 2:53 pm CDT
Extended Forecast for

Montour IA

Extreme Heat Watch June 21, 12:00pm until June 22, 09:00pm
Click here for hazard details and duration
Extreme Heat Watch
  • This Afternoon

    This Afternoon: A 50 percent chance of showers and thunderstorms.  Mostly cloudy, with a high near 77. North northwest wind 5 to 7 mph.  New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 77 °F

    Chance
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before 11pm.  Mostly cloudy, then gradually becoming mostly clear, with a low around 60. West northwest wind 6 to 9 mph.  Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 60 °F

    Showers
    Likely then
    Mostly Clear

  • Juneteenth

    Juneteenth: Sunny, with a high near 86. West wind 6 to 8 mph.

    High: 86 °F

    Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms, mainly after 3am.  Partly cloudy, with a low around 67. South wind 6 to 9 mph.  New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 67 °F

    Mostly Clear
    then Chance
    T-storms

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms, mainly before 9am.  Mostly sunny, with a high near 93. Windy, with a south wind 10 to 15 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 30 mph.  New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 93 °F

    Chance
    T-storms and
    Breezy then
    Sunny and
    Windy

  • Friday Night

    Friday Night: Clear, with a low around 76. Breezy.

    Low: 76 °F

    Clear and
    Breezy

  • Saturday

    Saturday: Sunny, with a high near 96. Windy.

    High: 96 °F

    Sunny and
    Windy

  • Saturday Night

    Saturday Night: Clear, with a low around 76. Breezy.

    Low: 76 °F

    Clear and
    Breezy

  • Sunday

    Sunday: Sunny, with a high near 96. Windy.

    High: 96 °F

    Sunny and
    Windy

Detailed Forecast

This Afternoon
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 77. North northwest wind 5 to 7 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms likely, mainly before 11pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 60. West northwest wind 6 to 9 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Juneteenth
Sunny, with a high near 86. West wind 6 to 8 mph.
Thursday Night
A 30 percent chance of showers and thunderstorms, mainly after 3am. Partly cloudy, with a low around 67. South wind 6 to 9 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
A 30 percent chance of showers and thunderstorms, mainly before 9am. Mostly sunny, with a high near 93. Windy, with a south wind 10 to 15 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 30 mph. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
Clear, with a low around 76. Breezy.
Saturday
Sunny, with a high near 96. Windy.
Saturday Night
Clear, with a low around 76. Breezy.
Sunday
Sunny, with a high near 96. Windy.
Sunday Night
Mostly clear, with a low around 74. Breezy.
Monday
A 40 percent chance of showers and thunderstorms. Sunny, with a high near 94.
Monday Night
Showers likely and possibly a thunderstorm. Partly cloudy, with a low around 70. Chance of precipitation is 60%.
Tuesday
Showers and thunderstorms likely. Partly sunny, with a high near 90. Chance of precipitation is 60%.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Montour IA
 41.99°N 92.74°W
2:51 pm CDT Jun 18, 2025
3pm CDT Jun 18, 2025-6pm CDT Jun 24, 2025
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database