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.

Mostly Cloudy

27°F

-3°C

Humidity 89%
Wind Speed N 6 mph
Barometer 30.09 in (1019.6 mb)
Dewpoint 24°F (-4°C)
Visibility 10.00 mi
Wind Chill20°F (-7°C)
Last update 14 Mar 1:53 am 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

  • Overnight

    Overnight: A 20 percent chance of snow after 4am. Cloudy, with a low around 27. Light east wind.

    Low: 27 °F

    Slight Chance
    Snow

  • Saturday

    Saturday: A 20 percent chance of snow before 10am. Mostly cloudy, with a high near 43. Breezy, with a southeast wind 6 to 11 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 24 mph.

    High: 43 °F

    Slight Chance
    Snow then
    Mostly Cloudy
    and Breezy

  • Saturday Night

    Saturday Night: A chance of rain and snow before 8pm, then a chance of snow between 8pm and 9pm, then rain after 9pm. Some thunder is also possible. Steady temperature around 36. Windy, with an east southeast wind 17 to 23 mph, with gusts as high as 26 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

    Low: 36 °F

    Windy. Chance
    Rain/Snow
    then Rain

  • Sunday

    Sunday: Rain, snow, and sleet before 1pm, then snow and sleet between 1pm and 4pm, then snow after 4pm. Widespread blowing snow after 1pm. Temperature falling to around 28 by 5pm. Very windy, with an east southeast wind 16 to 26 mph becoming north 30 to 40 mph. Winds could gust as high as 47 mph. Chance of precipitation is 100%. New snow and sleet accumulation of 1 to 2 inches possible.

    High: 37 °F⇓

    Wintry Mix
    and Blowing
    Snow

  • Sunday Night

    Sunday Night: Snow, mainly before 1am. Widespread blowing snow. Low around 4. Very windy, with a north northwest wind 38 to 41 mph, with gusts as high as 47 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

    Low: 4 °F

    Snow and
    Blowing Snow

  • Monday

    Monday: Widespread blowing snow before 8am. Partly sunny, with a high near 13. Windy.

    High: 13 °F

    Windy.
    Blowing Snow
    then Partly
    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 0. Windy.

    Low: 0 °F

    Partly Cloudy
    and Windy
    then Mostly
    Clear

  • Tuesday

    Tuesday: A 20 percent chance of snow after 1pm. Partly sunny, with a high near 27.

    High: 27 °F

    Mostly Sunny
    then Slight
    Chance Snow

  • Tuesday Night

    Tuesday Night: Snow likely before 1am. Mostly cloudy, with a low around 19. Breezy. Chance of precipitation is 70%.

    Low: 19 °F

    Snow Likely
    and Breezy

Detailed Forecast

Overnight
A 20 percent chance of snow after 4am. Cloudy, with a low around 27. Light east wind.
Saturday
A 20 percent chance of snow before 10am. Mostly cloudy, with a high near 43. Breezy, with a southeast wind 6 to 11 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 24 mph.
Saturday Night
A chance of rain and snow before 8pm, then a chance of snow between 8pm and 9pm, then rain after 9pm. Some thunder is also possible. Steady temperature around 36. Windy, with an east southeast wind 17 to 23 mph, with gusts as high as 26 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Sunday
Rain, snow, and sleet before 1pm, then snow and sleet between 1pm and 4pm, then snow after 4pm. Widespread blowing snow after 1pm. Temperature falling to around 28 by 5pm. Very windy, with an east southeast wind 16 to 26 mph becoming north 30 to 40 mph. Winds could gust as high as 47 mph. Chance of precipitation is 100%. New snow and sleet accumulation of 1 to 2 inches possible.
Sunday Night
Snow, mainly before 1am. Widespread blowing snow. Low around 4. Very windy, with a north northwest wind 38 to 41 mph, with gusts as high as 47 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.
Monday
Widespread blowing snow before 8am. Partly sunny, with a high near 13. Windy.
Monday Night
Mostly clear, with a low around 0. Windy.
Tuesday
A 20 percent chance of snow after 1pm. Partly sunny, with a high near 27.
Tuesday Night
Snow likely before 1am. Mostly cloudy, with a low around 19. Breezy. Chance of precipitation is 70%.
Wednesday
Mostly sunny, with a high near 47.
Wednesday Night
Partly cloudy, with a low around 32.
Thursday
Mostly sunny, with a high near 58.
Thursday Night
Partly cloudy, with a low around 35.
Friday
Partly sunny, with a high near 59.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Chapin IA
 42.84°N 93.23°W
Last Update:
1:27 am CDT Mar 14, 2026
Forecast Valid:
2am CDT Mar 14, 2026-6pm CDT Mar 20, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation