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

Hazardous Weather Conditions

Current conditions at

Mason City Municipal Airport (KMCW)

Lat: 43.15°NLon: 93.33°WElev: 1188ft.

Fair

34°F

1°C

Humidity 54%
Wind Speed NW 15 G 25 mph
Barometer 30.01 in (1016.9 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill24°F (-4°C)
Last update 13 Mar 5:53 pm CDT
Extended Forecast for

Chapin IA

Winter Storm Watch March 15, 10:00am until March 16, 10:00am
Click here for hazard details and duration
Winter Storm Watch

  • Tonight

    Tonight: A 30 percent chance of snow, mainly between 3am and 5am. Mostly cloudy, with a low around 27. Northwest wind 10 to 15 mph becoming light and variable in the evening. Winds could gust as high as 18 mph. Total nighttime snow accumulation of less than a half inch possible.

    Low: 27 °F

    Mostly Cloudy
    then Chance
    Snow

  • Saturday

    Saturday: A 30 percent chance of snow, mainly before 9am. Mostly cloudy, with a high near 39. Breezy, with an east southeast wind 6 to 11 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 23 mph. New snow accumulation of less than a half inch possible.

    High: 39 °F

    Chance Snow
    then Partly
    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: A chance of snow before 10pm, then rain. Some thunder is also possible. Low around 33. Windy, with an east wind 17 to 21 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

    Low: 33 °F

    Chance
    Rain/Snow and
    Breezy then
    Showers and
    Windy

  • Sunday

    Sunday: Snow, possibly mixed with rain and sleet, becoming all snow after 4pm. The snow could be heavy at times. Some thunder is also possible. Widespread blowing snow after 1pm. Temperature falling to around 29 by 5pm. Very windy, with an east wind 21 to 26 mph becoming north 35 to 40 mph in the afternoon. Winds could gust as high as 48 mph. Chance of precipitation is 100%. New snow and sleet accumulation of 2 to 4 inches possible.

    High: 39 °F⇓

    Wintry Mix
    and Blowing
    Snow

  • Sunday Night

    Sunday Night: Snow likely, mainly before 1am. Widespread blowing snow. Cloudy, with a low around 5. Very windy, with a north northwest wind 36 to 40 mph, with gusts as high as 49 mph. Chance of precipitation is 70%. New snow accumulation of 2 to 4 inches possible.

    Low: 5 °F

    Snow Likely
    and Blowing
    Snow

  • Monday

    Monday: Widespread blowing snow before 8am. Partly sunny, with a high near 12. Windy.

    High: 12 °F

    Windy.
    Blowing Snow
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around -2. Windy.

    Low: -2 °F

    Partly Cloudy
    and Windy
    then Mostly
    Clear

  • Tuesday

    Tuesday: A 20 percent chance of snow after 1pm. Mostly sunny, with a high near 26.

    High: 26 °F

    Mostly Sunny
    then Slight
    Chance Snow

  • Tuesday Night

    Tuesday Night: Snow likely before 1am. Mostly cloudy, with a low around 19. Chance of precipitation is 60%.

    Low: 19 °F

    Snow Likely

Detailed Forecast

Tonight
A 30 percent chance of snow, mainly between 3am and 5am. Mostly cloudy, with a low around 27. Northwest wind 10 to 15 mph becoming light and variable in the evening. Winds could gust as high as 18 mph. Total nighttime snow accumulation of less than a half inch possible.
Saturday
A 30 percent chance of snow, mainly before 9am. Mostly cloudy, with a high near 39. Breezy, with an east southeast wind 6 to 11 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 23 mph. New snow accumulation of less than a half inch possible.
Saturday Night
A chance of snow before 10pm, then rain. Some thunder is also possible. Low around 33. Windy, with an east wind 17 to 21 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Sunday
Snow, possibly mixed with rain and sleet, becoming all snow after 4pm. The snow could be heavy at times. Some thunder is also possible. Widespread blowing snow after 1pm. Temperature falling to around 29 by 5pm. Very windy, with an east wind 21 to 26 mph becoming north 35 to 40 mph in the afternoon. Winds could gust as high as 48 mph. Chance of precipitation is 100%. New snow and sleet accumulation of 2 to 4 inches possible.
Sunday Night
Snow likely, mainly before 1am. Widespread blowing snow. Cloudy, with a low around 5. Very windy, with a north northwest wind 36 to 40 mph, with gusts as high as 49 mph. Chance of precipitation is 70%. New snow accumulation of 2 to 4 inches possible.
Monday
Widespread blowing snow before 8am. Partly sunny, with a high near 12. Windy.
Monday Night
Partly cloudy, with a low around -2. Windy.
Tuesday
A 20 percent chance of snow after 1pm. Mostly sunny, with a high near 26.
Tuesday Night
Snow likely before 1am. Mostly cloudy, with a low around 19. Chance of precipitation is 60%.
Wednesday
Sunny, with a high near 45.
Wednesday Night
Partly cloudy, with a low around 31.
Thursday
Mostly sunny, with a high near 53.
Thursday Night
Partly cloudy, with a low around 33.
Friday
Mostly sunny, with a high near 54.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Chapin IA
 42.84°N 93.23°W
Last Update:
1:31 pm CDT Mar 13, 2026
Forecast Valid:
6pm CDT Mar 13, 2026-6pm CDT Mar 20, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation