Air Quality Concerns; Fire Weather in the West; Flash Flooding in the Southeast

Wildfire smoke continues to result in poor air quality from the Upper Midwest into the Northeast. Multiple days of hot, dry and windy conditions are expected to bring fire weather concerns for portions of the Four Corners region into the central Great Basin and Rockies. Heavy rainfall and a flash flooding threat continues in the Southeast. Severe thunderstorms continue across the Northern Plains Read More >

Hazardous Weather Conditions

Current conditions at

Mason City Municipal Airport (KMCW)

Lat: 43.15°NLon: 93.33°WElev: 1188ft.

Fog/Mist

55°F

13°C

Humidity 100%
Wind Speed Calm
Barometer 30.20 in (1021.8 mb)
Dewpoint 55°F (13°C)
Visibility 2.50 mi
Last update 5 Aug 6:53 am CDT
Extended Forecast for

Sheffield IA

  • Today

    Today: Mostly sunny, with a high near 80. Calm wind becoming south southeast 5 to 9 mph in the morning.

    High: 80 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 63. Southeast wind around 7 mph.

    Low: 63 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms before 10am.  Partly sunny, with a high near 82. South southeast wind 7 to 13 mph, with gusts as high as 18 mph.

    High: 82 °F

    Slight Chance
    T-storms then
    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms after 1am.  Partly cloudy, with a low around 67. South southeast wind around 8 mph.

    Low: 67 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Thursday

    Thursday: Mostly sunny, with a high near 84. South wind 7 to 10 mph.

    High: 84 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 70.

    Low: 70 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 87. Breezy.

    High: 87 °F

    Mostly Sunny
    then Sunny
    and Breezy

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms after 1am.  Partly cloudy, with a low around 69.

    Low: 69 °F

    Partly Cloudy
    then Chance
    T-storms

  • Saturday

    Saturday: A chance of showers, with thunderstorms also possible after 1pm.  Partly sunny, with a high near 83. Chance of precipitation is 40%.

    High: 83 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Today
Mostly sunny, with a high near 80. Calm wind becoming south southeast 5 to 9 mph in the morning.
Tonight
Partly cloudy, with a low around 63. Southeast wind around 7 mph.
Wednesday
A 20 percent chance of showers and thunderstorms before 10am. Partly sunny, with a high near 82. South southeast wind 7 to 13 mph, with gusts as high as 18 mph.
Wednesday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 67. South southeast wind around 8 mph.
Thursday
Mostly sunny, with a high near 84. South wind 7 to 10 mph.
Thursday Night
Partly cloudy, with a low around 70.
Friday
Sunny, with a high near 87. Breezy.
Friday Night
A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 69.
Saturday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 83. Chance of precipitation is 40%.
Saturday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 63.
Sunday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 81.
Sunday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 62.
Monday
A 30 percent chance of showers. Mostly sunny, with a high near 80.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Sheffield IA
 42.89°N 93.23°W
6:51 am CDT Aug 5, 2025
7am CDT Aug 5, 2025-6pm CDT Aug 11, 2025
 
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