Current conditions at

Mason City Municipal Airport (KMCW)

Lat: 43.15°NLon: 93.33°WElev: 1188ft.

Mostly Cloudy

-2°F

-19°C

Humidity 68%
Wind Speed NW 20 mph
Barometer 30.37 in (1031.0 mb)
Dewpoint -10°F (-23°C)
Visibility 10.00 mi
Wind Chill-25°F (-32°C)
Last update 22 Jan 6:53 pm CST
Extended Forecast for

Thornton IA

Cold Weather Advisory January 23, 12:00pm until January 24, 03:00am
Extreme Cold Warning January 22, 09:00pm until January 23, 12:00pm
Click here for hazard details and duration
Cold Weather Advisory
Extreme Cold Warning
  • Tonight

    Tonight: Patchy blowing snow before 8pm. Partly cloudy, with a low around -19. Wind chill values as low as -40. Blustery, with a north northwest wind 14 to 17 mph, with gusts as high as 29 mph.

    Low: -19 °F

    Blustery.
    Patchy
    Blowing Snow
    then Partly
    Cloudy

  • Friday

    Friday: Mostly sunny and cold, with a high near -7. Wind chill values as low as -40. North northwest wind 8 to 14 mph, with gusts as high as 24 mph.

    High: -7 °F

    Cold

  • Friday Night

    Friday Night: Mostly cloudy, with a low around -12. Wind chill values as low as -20. Light and variable wind.

    Low: -12 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 20 percent chance of snow before noon.  Mostly cloudy and cold, with a high near -1. Wind chill values as low as -10. Light east wind.

    High: -1 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around -9. Calm wind becoming north northeast around 5 mph after midnight.

    Low: -9 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny and cold, with a high near 2.

    High: 2 °F

    Cold

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around -13.

    Low: -13 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 13.

    High: 13 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 2.

    Low: 2 °F

    Partly Cloudy

Detailed Forecast

Tonight
Patchy blowing snow before 8pm. Partly cloudy, with a low around -19. Wind chill values as low as -40. Blustery, with a north northwest wind 14 to 17 mph, with gusts as high as 29 mph.
Friday
Mostly sunny and cold, with a high near -7. Wind chill values as low as -40. North northwest wind 8 to 14 mph, with gusts as high as 24 mph.
Friday Night
Mostly cloudy, with a low around -12. Wind chill values as low as -20. Light and variable wind.
Saturday
A 20 percent chance of snow before noon. Mostly cloudy and cold, with a high near -1. Wind chill values as low as -10. Light east wind.
Saturday Night
Mostly cloudy, with a low around -9. Calm wind becoming north northeast around 5 mph after midnight.
Sunday
Mostly sunny and cold, with a high near 2.
Sunday Night
Partly cloudy, with a low around -13.
Monday
Sunny, with a high near 13.
Monday Night
Partly cloudy, with a low around 2.
Tuesday
Mostly sunny, with a high near 14.
Tuesday Night
Mostly cloudy, with a low around -1.
Wednesday
Mostly sunny, with a high near 11.
Wednesday Night
Partly cloudy, with a low around -7.
Thursday
Mostly sunny and cold, with a high near 5.
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ABOUT THIS FORECAST

 
Point Forecast:
Thornton IA
 42.95°N 93.37°W
6:16 pm CST Jan 22, 2026
7pm CST Jan 22, 2026-6pm CST Jan 29, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database