Severe Weather in the Central U.S.; Heavy Rain in the Ohio Valley and Mid-Atlantic

Scattered severe thunderstorms capable of producing severe gusts, large hail, and perhaps a couple tornadoes are forecast from the north-central High Plains into the Upper Mississippi Valley. Widespread thunderstorms may produce excessive rainfall across portions of the Ohio Valley and Mid-Atlantic. Hot conditions and Critical Fire Weather looms over the Great Basin and Southwest through midweek. Read More >

Hazardous Weather Conditions

Current conditions at

Mason City Municipal Airport (KMCW)

Lat: 43.15°NLon: 93.33°WElev: 1188ft.

Thunderstorm

68°F

20°C

Humidity 93%
Wind Speed SE 6 mph
Barometer 29.96 in (1013.4 mb)
Dewpoint 66°F (19°C)
Visibility 8.00 mi
Last update 16 Jun 6:53 am CDT
Extended Forecast for

Chapin IA

  • Today

    Today: Showers likely and possibly a thunderstorm before 8am, then a chance of showers and thunderstorms after 8am. Some of the storms could produce heavy rainfall.  Partly sunny, with a high near 83. South wind 5 to 11 mph, with gusts as high as 20 mph.  Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 83 °F

    Heavy Rain
    then Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms before 11pm, then showers likely and possibly a thunderstorm between 11pm and midnight, then a chance of showers and thunderstorms after midnight.  Mostly cloudy, with a low around 65. South southwest wind 6 to 10 mph, with gusts as high as 18 mph.  Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 65 °F

    Showers
    Likely then
    Chance
    T-storms

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms.  Partly sunny, with a high near 81. North northwest wind 5 to 7 mph.  New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 81 °F

    Chance
    Showers then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm.  Low around 61. East northeast wind around 7 mph.  Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 61 °F

    T-storms

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm.  Mostly sunny, with a high near 77. Northeast wind 8 to 11 mph becoming northwest in the afternoon.  Chance of precipitation is 60%. New rainfall amounts between three quarters and one inch possible.

    High: 77 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 59.

    Low: 59 °F

    Mostly Clear

  • Juneteenth

    Juneteenth: Sunny, with a high near 84.

    High: 84 °F

    Sunny

  • Thursday Night

    Thursday Night: A 40 percent chance of showers and thunderstorms, mainly after 1am.  Partly cloudy, with a low around 62.

    Low: 62 °F

    Chance
    T-storms

  • Friday

    Friday: Mostly sunny, with a high near 86. Windy.

    High: 86 °F

    Mostly Sunny
    and Windy

Detailed Forecast

Today
Showers likely and possibly a thunderstorm before 8am, then a chance of showers and thunderstorms after 8am. Some of the storms could produce heavy rainfall. Partly sunny, with a high near 83. South wind 5 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.
Tonight
A chance of showers and thunderstorms before 11pm, then showers likely and possibly a thunderstorm between 11pm and midnight, then a chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 65. South southwest wind 6 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 81. North northwest wind 5 to 7 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Showers and possibly a thunderstorm. Low around 61. East northeast wind around 7 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Wednesday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 77. Northeast wind 8 to 11 mph becoming northwest in the afternoon. Chance of precipitation is 60%. New rainfall amounts between three quarters and one inch possible.
Wednesday Night
Mostly clear, with a low around 59.
Juneteenth
Sunny, with a high near 84.
Thursday Night
A 40 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 62.
Friday
Mostly sunny, with a high near 86. Windy.
Friday Night
Mostly clear, with a low around 72. Windy.
Saturday
Sunny, with a high near 91. Breezy.
Saturday Night
Mostly clear, with a low around 72. Breezy.
Sunday
Sunny, with a high near 89. Windy.
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ABOUT THIS FORECAST

 
Point Forecast:
Chapin IA
 42.82°N 93.23°W
6:35 am CDT Jun 16, 2025
7am CDT Jun 16, 2025-6pm CDT Jun 22, 2025
 
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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