Areas of Dangerous Heat and Severe Thunderstorms

Dangerous heat will persist across the Southwest U.S. through Friday with daytime highs of 110-115°F. Heat across the southern Plains will briefly ease to near-normal by late week before returning over much of the Plains into next week. Scattered strong to severe thunderstorms are possible across parts of the Northeast U.S. on Thursday. Damaging wind, hail, and a tornado or two are possible. Read More >

Current conditions at

Mason City Municipal Airport (KMCW)

Lat: 43.15°NLon: 93.33°WElev: 1188ft.

Fair

68°F

20°C

Humidity 76%
Wind Speed NW 7 mph
Barometer 30.01 in (1015.3 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 26 Aug 7:53 pm CDT
Extended Forecast for

Sheffield IA

  • Tonight

    Tonight: Mostly clear, with a low around 58. West northwest wind 3 to 6 mph.

    Low: 58 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 82. North northwest wind 3 to 7 mph.

    High: 82 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 55. Calm wind.

    Low: 55 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 83. Calm wind becoming south southwest around 6 mph in the afternoon.

    High: 83 °F

    Sunny

  • Friday Night

    Friday Night: A 20 percent chance of showers after 1am.  Mostly cloudy, with a low around 65. South southeast wind 6 to 11 mph.

    Low: 65 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm.  Partly sunny, with a high near 85. Breezy.  Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 85 °F

    Showers
    Likely and
    Breezy

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms after 1am.  Partly cloudy, with a low around 71. Breezy.

    Low: 71 °F

    Breezy.
    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms.  Mostly sunny, with a high near 93. Breezy.

    High: 93 °F

    Slight Chance
    T-storms and
    Breezy

  • Sunday Night

    Sunday Night: A 40 percent chance of showers and thunderstorms.  Partly cloudy, with a low around 71.

    Low: 71 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Mostly clear, with a low around 58. West northwest wind 3 to 6 mph.
Thursday
Sunny, with a high near 82. North northwest wind 3 to 7 mph.
Thursday Night
Mostly clear, with a low around 55. Calm wind.
Friday
Sunny, with a high near 83. Calm wind becoming south southwest around 6 mph in the afternoon.
Friday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 65. South southeast wind 6 to 11 mph.
Saturday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 85. Breezy. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 71. Breezy.
Sunday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93. Breezy.
Sunday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71.
Monday
Partly sunny, with a high near 91.
Monday Night
Partly cloudy, with a low around 66.
Tuesday
Mostly sunny, with a high near 88.
Tuesday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 66.
Wednesday
Mostly sunny, with a high near 88.
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ABOUT THIS FORECAST

 
Point Forecast:
Sheffield IA
 42.89°N 93.2°W
5:31 pm CDT Aug 26, 2026
8pm CDT Aug 26, 2026-6pm CDT Sep 2, 2026
 
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Additional Resources

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Hourly Weather Forecast

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