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

71°F

22°C

Humidity 84%
Wind Speed S 9 mph
Barometer 29.99 in (1014.4 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 15 Aug 8:53 am CDT
Extended Forecast for

Sheffield IA

  • Today

    Today: A 20 percent chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 86. South wind 7 to 11 mph, with gusts as high as 18 mph.

    High: 86 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 7pm, then a slight chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 70. South wind around 8 mph. Chance of precipitation is 20%.

    Low: 70 °F

    Slight Chance
    T-storms

  • Saturday

    Saturday: Mostly sunny, with a high near 90. Heat index values as high as 102. South wind 7 to 9 mph.

    High: 90 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 69. South wind around 7 mph.

    Low: 69 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 89. Southeast wind 6 to 9 mph.

    High: 89 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 70 °F

    Chance
    T-storms

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.

    High: 88 °F

    Chance
    Showers then
    Chance
    T-storms

  • Monday Night

    Monday Night: A 30 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 67.

    Low: 67 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: Mostly sunny, with a high near 84.

    High: 84 °F

    Mostly Sunny

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 86. South wind 7 to 11 mph, with gusts as high as 18 mph.
Tonight
A slight chance of showers and thunderstorms before 7pm, then a slight chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 70. South wind around 8 mph. Chance of precipitation is 20%.
Saturday
Mostly sunny, with a high near 90. Heat index values as high as 102. South wind 7 to 9 mph.
Saturday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 69. South wind around 7 mph.
Sunday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 89. Southeast wind 6 to 9 mph.
Sunday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.
Monday Night
A 30 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 67.
Tuesday
Mostly sunny, with a high near 84.
Tuesday Night
Partly cloudy, with a low around 63.
Wednesday
Mostly sunny, with a high near 81.
Wednesday Night
Mostly clear, with a low around 62.
Thursday
Sunny, with a high near 82.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sheffield IA
 42.89°N 93.23°W
Last Update:
5:53 am CDT Aug 15, 2025
Forecast Valid:
9am CDT Aug 15, 2025-6pm CDT Aug 21, 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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation