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

64°F

18°C

Humidity 56%
Wind Speed NW 12 mph
Barometer 29.91 in (1012.6 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 20 Mar 1:53 pm CDT
Extended Forecast for

Thornton IA

  • This Afternoon

    This Afternoon: Sunny, with a high near 67. North northwest wind around 9 mph.

    High: 67 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 43. Light and variable wind becoming southeast around 6 mph in the evening.

    Low: 43 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 79. Breezy, with a south wind 7 to 16 mph becoming west in the afternoon. Winds could gust as high as 20 mph.

    High: 79 °F

    Sunny then
    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 42. Breezy, with a southwest wind 7 to 16 mph becoming north northeast after midnight. Winds could gust as high as 22 mph.

    Low: 42 °F

    Mostly Clear
    then Mostly
    Cloudy and
    Breezy

  • Sunday

    Sunday: Partly sunny, with a high near 50. Windy, with a north wind 18 to 22 mph, with gusts as high as 26 mph.

    High: 50 °F

    Partly Sunny
    and Windy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 28. Blustery.

    Low: 28 °F

    Partly Cloudy
    and Blustery
    then Mostly
    Clear

  • Monday

    Monday: Mostly sunny, with a high near 50.

    High: 50 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 36.

    Low: 36 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 56.

    High: 56 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
Sunny, with a high near 67. North northwest wind around 9 mph.
Tonight
Partly cloudy, with a low around 43. Light and variable wind becoming southeast around 6 mph in the evening.
Saturday
Sunny, with a high near 79. Breezy, with a south wind 7 to 16 mph becoming west in the afternoon. Winds could gust as high as 20 mph.
Saturday Night
Increasing clouds, with a low around 42. Breezy, with a southwest wind 7 to 16 mph becoming north northeast after midnight. Winds could gust as high as 22 mph.
Sunday
Partly sunny, with a high near 50. Windy, with a north wind 18 to 22 mph, with gusts as high as 26 mph.
Sunday Night
Mostly clear, with a low around 28. Blustery.
Monday
Mostly sunny, with a high near 50.
Monday Night
Mostly cloudy, with a low around 36.
Tuesday
Mostly cloudy, with a high near 56.
Tuesday Night
Mostly cloudy, with a low around 35.
Wednesday
Mostly cloudy, with a high near 56.
Wednesday Night
Mostly cloudy, with a low around 43. Breezy.
Thursday
Partly sunny, with a high near 59. Windy.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Thornton IA
 42.95°N 93.37°W
Last Update:
1:26 pm CDT Mar 20, 2026
Forecast Valid:
2pm CDT Mar 20, 2026-6pm CDT Mar 26, 2026
 
Forecast Discussion
 
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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation