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

56°F

13°C

Humidity 70%
Wind Speed N 16 mph
Barometer 29.60 in (1001.4 mb)
Dewpoint 46°F (8°C)
Visibility NA
Last update 22 Mar 12:53 am CDT
Extended Forecast for

Thornton IA

  • Overnight

    Overnight: Mostly cloudy, with a low around 40. Windy, with a north northeast wind 15 to 21 mph, with gusts as high as 34 mph.

    Low: 40 °F

    Mostly Cloudy
    and Windy

  • Sunday

    Sunday: Partly sunny, with a steady temperature around 43. Windy, with a north wind 20 to 23 mph, with gusts as high as 31 mph.

    High: 43 °F

    Partly Sunny
    and Windy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 27. North wind 9 to 14 mph becoming light after midnight. Winds could gust as high as 22 mph.

    Low: 27 °F

    Mostly Clear

  • Monday

    Monday: Increasing clouds, with a high near 51. Light and variable wind becoming south 5 to 7 mph in the morning.

    High: 51 °F

    Increasing
    Clouds

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 37. South wind 7 to 10 mph.

    Low: 37 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 59.

    High: 59 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 41.

    Low: 41 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 65.

    High: 65 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 43.

    Low: 43 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 40. Windy, with a north northeast wind 15 to 21 mph, with gusts as high as 34 mph.
Sunday
Partly sunny, with a steady temperature around 43. Windy, with a north wind 20 to 23 mph, with gusts as high as 31 mph.
Sunday Night
Mostly clear, with a low around 27. North wind 9 to 14 mph becoming light after midnight. Winds could gust as high as 22 mph.
Monday
Increasing clouds, with a high near 51. Light and variable wind becoming south 5 to 7 mph in the morning.
Monday Night
Mostly cloudy, with a low around 37. South wind 7 to 10 mph.
Tuesday
Mostly cloudy, with a high near 59.
Tuesday Night
Mostly cloudy, with a low around 41.
Wednesday
Mostly cloudy, with a high near 65.
Wednesday Night
Mostly cloudy, with a low around 43.
Thursday
Partly sunny, with a high near 58. Windy.
Thursday Night
Mostly cloudy, with a low around 28. Blustery.
Friday
Partly sunny, with a high near 46.
Friday Night
Partly cloudy, with a low around 27.
Saturday
Mostly sunny, with a high near 50. Breezy.
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:
10:36 pm CDT Mar 21, 2026
Forecast Valid:
1am CDT Mar 22, 2026-6pm CDT Mar 28, 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