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.

Overcast

46°F

8°C

Humidity 61%
Wind Speed SE 17 G 24 mph
Barometer 30.26 in (1025.1 mb)
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 11 Apr 10:53 am CDT
Extended Forecast for

Thornton IA

  • Today

    Today: A chance of showers and thunderstorms before noon, then showers likely and possibly a thunderstorm between noon and 5pm, then a chance of showers and thunderstorms after 5pm. Cloudy, with a high near 50. Breezy, with a south southeast wind 13 to 20 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 50 °F

    Showers
    Likely and
    Breezy

  • Tonight

    Tonight: A 50 percent chance of showers and thunderstorms, mainly after 8pm. Cloudy, with a temperature rising to around 57 by 5am. Windy, with a south southeast wind 20 to 22 mph, with gusts as high as 28 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 50 °F⇑

    Chance
    T-storms and
    Windy

  • Sunday

    Sunday: A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 71. Windy, with a south southwest wind 22 to 28 mph, with gusts as high as 34 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 71 °F

    Windy. Chance
    Showers then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 30 percent chance of showers and thunderstorms before 1am. Cloudy during the early evening, then gradual clearing, with a low around 55. Breezy, with a southwest wind 10 to 20 mph, with gusts as high as 25 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 55 °F

    Chance
    T-storms and
    Breezy then
    Chance
    Showers

  • Monday

    Monday: A slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 78. Breezy, with a south wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 20%.

    High: 78 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms and
    Breezy

  • Monday Night

    Monday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 59. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 59 °F

    Showers
    Likely

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 83. Breezy.

    High: 83 °F

    Mostly Sunny
    then Chance
    T-storms and
    Breezy

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 1am, then a slight chance of showers. Partly cloudy, with a low around 53. Chance of precipitation is 50%.

    Low: 53 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A 40 percent chance of showers after 1pm. Sunny, with a high near 75.

    High: 75 °F

    Sunny then
    Chance
    Showers

Detailed Forecast

Today
A chance of showers and thunderstorms before noon, then showers likely and possibly a thunderstorm between noon and 5pm, then a chance of showers and thunderstorms after 5pm. Cloudy, with a high near 50. Breezy, with a south southeast wind 13 to 20 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
A 50 percent chance of showers and thunderstorms, mainly after 8pm. Cloudy, with a temperature rising to around 57 by 5am. Windy, with a south southeast wind 20 to 22 mph, with gusts as high as 28 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 71. Windy, with a south southwest wind 22 to 28 mph, with gusts as high as 34 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday Night
A 30 percent chance of showers and thunderstorms before 1am. Cloudy during the early evening, then gradual clearing, with a low around 55. Breezy, with a southwest wind 10 to 20 mph, with gusts as high as 25 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday
A slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 78. Breezy, with a south wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 20%.
Monday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 59. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday
A 50 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 83. Breezy.
Tuesday Night
A chance of showers and thunderstorms before 1am, then a slight chance of showers. Partly cloudy, with a low around 53. Chance of precipitation is 50%.
Wednesday
A 40 percent chance of showers after 1pm. Sunny, with a high near 75.
Wednesday Night
A 40 percent chance of showers before 1am. Mostly clear, with a low around 52.
Thursday
A 30 percent chance of showers. Sunny, with a high near 78. Breezy.
Thursday Night
A 30 percent chance of showers. Mostly clear, with a low around 50.
Friday
A 50 percent chance of showers. Mostly sunny, with a high near 70. 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:
8:57 am CDT Apr 11, 2026
Forecast Valid:
11am CDT Apr 11, 2026-6pm CDT Apr 17, 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