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.

Fog/Mist

56°F

13°C

Humidity 100%
Wind Speed SE 3 mph
Barometer 30.12 in (1019.0 mb)
Dewpoint 56°F (13°C)
Visibility 0.75 mi
Last update 29 Aug 5:53 am CDT
Extended Forecast for

Sheffield IA

  • Today

    Today: A 20 percent chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 78. Calm wind becoming south around 5 mph.

    High: 78 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Tonight

    Tonight: A 10 percent chance of showers and thunderstorms before 7pm. Mostly cloudy, with a low around 56. Calm wind.

    Low: 56 °F

    Slight Chance
    T-storms then
    Mostly Cloudy

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 77. Light southeast wind.

    High: 77 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 57. Calm wind.

    Low: 57 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 4pm. Partly sunny, with a high near 73. Calm wind becoming southeast around 6 mph in the morning. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 73 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A slight chance of thunderstorms before 7pm. Mostly cloudy, with a low around 56. Chance of precipitation is 10%.

    Low: 56 °F

    Slight Chance
    T-storms then
    Mostly Cloudy

  • Labor Day

    Labor Day: A 20 percent chance of showers. Partly sunny, with a high near 71.

    High: 71 °F

    Slight Chance
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 54.

    Low: 54 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 74.

    High: 74 °F

    Mostly Sunny

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 78. Calm wind becoming south around 5 mph.
Tonight
A 10 percent chance of showers and thunderstorms before 7pm. Mostly cloudy, with a low around 56. Calm wind.
Saturday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 77. Light southeast wind.
Saturday Night
Mostly cloudy, with a low around 57. Calm wind.
Sunday
A chance of showers, with thunderstorms also possible after 4pm. Partly sunny, with a high near 73. Calm wind becoming southeast around 6 mph in the morning. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday Night
A slight chance of thunderstorms before 7pm. Mostly cloudy, with a low around 56. Chance of precipitation is 10%.
Labor Day
A 20 percent chance of showers. Partly sunny, with a high near 71.
Monday Night
Partly cloudy, with a low around 54.
Tuesday
Mostly sunny, with a high near 74.
Tuesday Night
A 40 percent chance of showers after 1am. Mostly cloudy, with a low around 53.
Wednesday
A 30 percent chance of showers. Partly sunny, with a high near 65.
Wednesday Night
Partly cloudy, with a low around 42.
Thursday
Mostly sunny, with a high near 63.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sheffield IA
 42.91°N 93.2°W
Last Update:
6:19 am CDT Aug 29, 2025
Forecast Valid:
6am CDT Aug 29, 2025-6pm CDT Sep 4, 2025
 
Forecast Discussion
 
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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation