Areas of Excessive Rainfall and Severe Thunderstorms; Fire Weather Concerns in the Northern Plains and Four Corners Region

Widespread showers and thunderstorms may bring areas of flash flooding across much of the Southern Plains into the Gulf Coast region and the upper Ohio River Valley into the Mid-Atlantic. A large Pacific storm will bring widespread rain, gusty winds, and mountain snow to California and the Great Basin. Fire weather concerns expected in the Northern Plains and the Four Corners region. Read More >

Hazardous Weather Conditions

Current conditions at

Mason City Municipal Airport (KMCW)

Lat: 43.15°NLon: 93.33°WElev: 1188ft.

Mostly Cloudy

70°F

21°C

Humidity 68%
Wind Speed SW 15 mph
Barometer 29.94 in (1012.4 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 27 May 2:53 am CDT
Extended Forecast for

3 Miles W Sheffield IA

  • Overnight

    Overnight: A 20 percent chance of showers before 4am.  Mostly cloudy, with a steady temperature around 66. South wind around 6 mph.

    Low: 66 °F

    Slight Chance
    Showers

  • Wednesday

    Wednesday: Mostly sunny, with a high near 88. Light and variable wind.

    High: 88 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms before 8pm.  Mostly clear, with a low around 59. East wind 3 to 7 mph.

    Low: 59 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 84. East southeast wind 9 to 11 mph.

    High: 84 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 55. Southeast wind 5 to 9 mph.

    Low: 55 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 84.

    High: 84 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 57.

    Low: 57 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 84.

    High: 84 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 56.

    Low: 56 °F

    Partly Cloudy

Detailed Forecast

Overnight
A 20 percent chance of showers before 4am. Mostly cloudy, with a steady temperature around 66. South wind around 6 mph.
Wednesday
Mostly sunny, with a high near 88. Light and variable wind.
Wednesday Night
A 20 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 59. East wind 3 to 7 mph.
Thursday
Sunny, with a high near 84. East southeast wind 9 to 11 mph.
Thursday Night
Mostly clear, with a low around 55. Southeast wind 5 to 9 mph.
Friday
Sunny, with a high near 84.
Friday Night
Partly cloudy, with a low around 57.
Saturday
Mostly sunny, with a high near 84.
Saturday Night
Partly cloudy, with a low around 56.
Sunday
Mostly sunny, with a high near 81.
Sunday Night
Partly cloudy, with a low around 54.
Monday
Sunny, with a high near 82.
Monday Night
Partly cloudy, with a low around 54.
Tuesday
Sunny, with a high near 82.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles W Sheffield IA
 42.91°N 93.28°W
1:56 am CDT May 27, 2026
3am CDT May 27, 2026-6pm CDT Jun 2, 2026
 
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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