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

Strong Storms and Heavy Rainfall Threats; Dangerous Heat for Southern Plains into the Southwest

Thunderstorms, some severe, will impact areas of the Plains into the Midwest today. Rainfall can be locally heavy as well from these storms with isolated instances of flash flooding. Monsoonal flow will enhance rainfall across the Four Corners into the central Rockies today. Meanwhile, summer heat continues for the southern Plains, Southwest into southern California. Read More >

Current conditions at

Mason City Municipal Airport (KMCW)

Lat: 43.15°NLon: 93.33°WElev: 1188ft.

Fair

73°F

23°C

Humidity 62%
Wind Speed S 13 mph
Barometer 30.06 in (1017.0 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 25 Aug 10:53 am CDT
Extended Forecast for

Sheffield IA

  • Today

    Today: Partly sunny, with a high near 83. South southwest wind around 10 mph.

    High: 83 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 63. South southwest wind 6 to 9 mph becoming west northwest after midnight.

    Low: 63 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 82. Northwest wind 7 to 15 mph, with gusts as high as 22 mph.

    High: 82 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 59. North northwest wind 5 to 9 mph.

    Low: 59 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 82. North wind 3 to 8 mph.

    High: 82 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 63.

    Low: 63 °F

    Partly Cloudy
    then Chance
    Showers

  • Saturday

    Saturday: A 40 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 83. Breezy.

    High: 83 °F

    Chance
    T-storms and
    Breezy

Detailed Forecast

Today
Partly sunny, with a high near 83. South southwest wind around 10 mph.
Tonight
Mostly clear, with a low around 63. South southwest wind 6 to 9 mph becoming west northwest after midnight.
Wednesday
Sunny, with a high near 82. Northwest wind 7 to 15 mph, with gusts as high as 22 mph.
Wednesday Night
Mostly clear, with a low around 59. North northwest wind 5 to 9 mph.
Thursday
Sunny, with a high near 82. North wind 3 to 8 mph.
Thursday Night
Mostly clear, with a low around 56.
Friday
Sunny, with a high near 83.
Friday Night
A 30 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 63.
Saturday
A 40 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 83. Breezy.
Saturday Night
A 40 percent chance of showers after 1am. Partly cloudy, with a low around 68.
Sunday
Mostly sunny, with a high near 87. Breezy.
Sunday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68.
Monday
Partly sunny, with a high near 86.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sheffield IA
 42.89°N 93.23°W
Last Update:
11:07 am CDT Aug 25, 2026
Forecast Valid:
11am CDT Aug 25, 2026-6pm CDT Aug 31, 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