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.

Fair

80°F

27°C

Humidity 54%
Wind Speed Vrbl 6 mph
Barometer 30.09 in (1017.9 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 29 Aug 2:53 pm CDT
Extended Forecast for

Thornton IA

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 80. Southwest wind around 5 mph.

    High: 80 °F

    Partly Sunny

  • Tonight

    Tonight: Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 57. Calm wind.

    Low: 57 °F

    Patchy Fog

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 76. Calm wind becoming east around 5 mph in the afternoon.

    High: 76 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 57. East wind 3 to 5 mph.

    Low: 57 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 4pm. Partly sunny, with a high near 74. Southeast wind 3 to 6 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 74 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 57. Chance of precipitation is 20%.

    Low: 57 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Labor Day

    Labor Day: A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 72. Chance of precipitation is 30%.

    High: 72 °F

    Chance
    Showers then
    Chance
    T-storms

  • Monday Night

    Monday Night: A slight chance of thunderstorms before 7pm, then a slight chance of showers after 1am. Mostly cloudy, with a low around 54. Chance of precipitation is 20%.

    Low: 54 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Tuesday

    Tuesday: A 30 percent chance of showers after 1pm. Partly sunny, with a high near 74.

    High: 74 °F

    Partly Sunny
    then Chance
    Showers

Detailed Forecast

This Afternoon
Partly sunny, with a high near 80. Southwest wind around 5 mph.
Tonight
Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 57. Calm wind.
Saturday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 76. Calm wind becoming east around 5 mph in the afternoon.
Saturday Night
Mostly cloudy, with a low around 57. East wind 3 to 5 mph.
Sunday
A chance of showers, with thunderstorms also possible after 4pm. Partly sunny, with a high near 74. Southeast wind 3 to 6 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 57. Chance of precipitation is 20%.
Labor Day
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 72. Chance of precipitation is 30%.
Monday Night
A slight chance of thunderstorms before 7pm, then a slight chance of showers after 1am. Mostly cloudy, with a low around 54. Chance of precipitation is 20%.
Tuesday
A 30 percent chance of showers after 1pm. Partly sunny, with a high near 74.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 52. Chance of precipitation is 30%.
Wednesday
Mostly sunny, with a high near 63.
Wednesday Night
Partly cloudy, with a low around 41.
Thursday
Mostly sunny, with a high near 62.
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ABOUT THIS FORECAST

 
Point Forecast:
Thornton IA
 42.95°N 93.37°W
Last Update:
2:50 pm CDT Aug 29, 2025
Forecast Valid:
3pm CDT Aug 29, 2025-6pm CDT Sep 4, 2025
 
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Additional Resources

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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