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.

Partly Cloudy

57°F

14°C

Humidity 90%
Wind Speed SE 14 G 23 mph
Barometer 29.40 in (994.6 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 17 Jun 6:53 am CDT
Extended Forecast for

Sheffield IA

  • Today

    Today: Showers and possibly a thunderstorm, mainly before 11am, then a chance of showers and thunderstorms after 11am. Some of the storms could be severe. High near 77. Windy, with a southeast wind 10 to 15 mph becoming west 17 to 22 mph in the afternoon. Winds could gust as high as 37 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 77 °F

    Severe
    Thunderstorms
    then Chance
    T-storms and
    Windy

  • Tonight

    Tonight: A 10 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 54. Windy, with a west northwest wind 13 to 22 mph, with gusts as high as 37 mph.

    Low: 54 °F

    Slight Chance
    T-storms and
    Windy then
    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 73. Northwest wind 13 to 15 mph, with gusts as high as 21 mph.

    High: 73 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 50. Northwest wind 5 to 9 mph becoming calm in the evening.

    Low: 50 °F

    Mostly Clear

  • Juneteenth

    Juneteenth: Sunny, with a high near 78. Light west wind increasing to 5 to 10 mph in the afternoon.

    High: 78 °F

    Sunny

  • Friday Night

    Friday Night: A 20 percent chance of showers after 1am. Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 59. Chance of precipitation is 70%.

    Low: 59 °F

    Slight Chance
    T-storms then
    Showers
    Likely

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers. Partly sunny, with a high near 74. Chance of precipitation is 60%.

    High: 74 °F

    Showers
    Likely

Detailed Forecast

Today
Showers and possibly a thunderstorm, mainly before 11am, then a chance of showers and thunderstorms after 11am. Some of the storms could be severe. High near 77. Windy, with a southeast wind 10 to 15 mph becoming west 17 to 22 mph in the afternoon. Winds could gust as high as 37 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
A 10 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 54. Windy, with a west northwest wind 13 to 22 mph, with gusts as high as 37 mph.
Thursday
Mostly sunny, with a high near 73. Northwest wind 13 to 15 mph, with gusts as high as 21 mph.
Thursday Night
Mostly clear, with a low around 50. Northwest wind 5 to 9 mph becoming calm in the evening.
Juneteenth
Sunny, with a high near 78. Light west wind increasing to 5 to 10 mph in the afternoon.
Friday Night
A 20 percent chance of showers after 1am. Mostly clear, with a low around 56.
Saturday
Mostly sunny, with a high near 80.
Saturday Night
A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 59. Chance of precipitation is 70%.
Sunday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers. Partly sunny, with a high near 74. Chance of precipitation is 60%.
Sunday Night
A 30 percent chance of showers before 1am. Partly cloudy, with a low around 54.
Monday
Mostly sunny, with a high near 75.
Monday Night
Partly cloudy, with a low around 55.
Tuesday
Mostly sunny, with a high near 78.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sheffield IA
 42.89°N 93.23°W
Last Update:
6:47 am CDT Jun 17, 2026
Forecast Valid:
7am CDT Jun 17, 2026-6pm CDT Jun 23, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation