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.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Thornton IA

  • Overnight

    Overnight: Clear, with a low around 28. Light and variable wind.

    Low: 28 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 62. Breezy, with a south wind 6 to 11 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 62 °F

    Sunny and
    Breezy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 47. Breezy, with a south wind 10 to 18 mph, with gusts as high as 25 mph.

    Low: 47 °F

    Partly Cloudy
    and Breezy
    then Partly
    Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 77. Southwest wind 6 to 8 mph becoming north in the afternoon.

    High: 77 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 47. North northeast wind around 6 mph becoming east southeast after midnight.

    Low: 47 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 81. Breezy.

    High: 81 °F

    Sunny then
    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 58. Windy.

    Low: 58 °F

    Partly Cloudy
    and Windy

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 72. Windy. Chance of precipitation is 60%.

    High: 72 °F

    Windy. Mostly
    Cloudy then
    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm before 1am. Mostly cloudy, with a low around 44. Windy. Chance of precipitation is 60%.

    Low: 44 °F

    Showers
    Likely and
    Windy

Detailed Forecast

Overnight
Clear, with a low around 28. Light and variable wind.
Monday
Sunny, with a high near 62. Breezy, with a south wind 6 to 11 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 25 mph.
Monday Night
Partly cloudy, with a low around 47. Breezy, with a south wind 10 to 18 mph, with gusts as high as 25 mph.
Tuesday
Sunny, with a high near 77. Southwest wind 6 to 8 mph becoming north in the afternoon.
Tuesday Night
Mostly clear, with a low around 47. North northeast wind around 6 mph becoming east southeast after midnight.
Wednesday
Sunny, with a high near 81. Breezy.
Wednesday Night
Partly cloudy, with a low around 58. Windy.
Thursday
Showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 72. Windy. Chance of precipitation is 60%.
Thursday Night
Showers likely and possibly a thunderstorm before 1am. Mostly cloudy, with a low around 44. Windy. Chance of precipitation is 60%.
Friday
Mostly sunny, with a high near 59. Windy.
Friday Night
Mostly clear, with a low around 37.
Saturday
Mostly sunny, with a high near 58.
Saturday Night
Mostly cloudy, with a low around 38.
Sunday
Mostly sunny, with a high near 58.
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:
1:27 am CDT Apr 20, 2026
Forecast Valid:
2am CDT Apr 20, 2026-6pm CDT Apr 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