Hazardous Weather Conditions
Current conditions at
Mason City Municipal Airport (KMCW)
Lat: 43.15°NLon: 93.33°WElev: 1188ft.
Freezing Fog
31°F
-1°C
| Humidity | 100% |
| Wind Speed | SE 10 mph |
| Barometer | 29.86 in (1012.0 mb) |
| Dewpoint | 31°F (-1°C) |
| Visibility | 0.50 mi |
| Wind Chill | 22°F (-6°C) |
| Last update | 26 Dec 10:53 pm CST |
Extended Forecast for
Thornton IA
Dense Fog Advisory December 26, 11:04pm until December 27, 12:00pm
NOW until 12:00pm Sat
Dense Fog Advisory
Tonight
Low: 34 °F
Dense Fog
Saturday
High: 44 °F
Dense Fog
Saturday Night
Low: 28 °F
Dense Fog
then CloudySunday
High: 37 °F⇓
Wintry Mix
Likely and
WindySunday Night
Low: 4 °F
Slight Chance
Snow and
WindyMonday
High: 12 °F
Mostly Sunny
and WindyMonday Night
Low: 5 °F
Mostly Clear
and Blustery
then Mostly
ClearTuesday
High: 30 °F
Partly Sunny
Detailed Forecast
Tonight
Widespread dense fog. Otherwise, mostly cloudy, with a steady temperature around 34. South southeast wind 6 to 9 mph.
Saturday
Widespread dense fog, mainly before 10am. Otherwise, mostly cloudy, with a high near 44. South southeast wind 9 to 13 mph, with gusts as high as 21 mph.
Saturday Night
Widespread dense fog, mainly between 9pm and 10pm. Otherwise, cloudy, with a low around 28. Light and variable wind becoming north northwest 6 to 11 mph after midnight. Winds could gust as high as 18 mph.
Sunday
A chance of rain and snow before noon, then snow likely, possibly mixed with sleet between noon and 3pm, then snow likely after 3pm. Mostly cloudy, with a temperature rising to near 37 by 8am, then falling to around 18 during the remainder of the day. Wind chill values as low as zero. Windy, with a north northwest wind 17 to 22 mph increasing to 27 to 32 mph in the afternoon. Winds could gust as high as 40 mph. Chance of precipitation is 60%. New snow and sleet accumulation of around an inch possible.
Sunday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 4. Windy, with a northwest wind 29 to 31 mph, with gusts as high as 38 mph.
Monday
Mostly sunny, with a high near 12. Windy.
Monday Night
Mostly clear, with a low around 5. Blustery.
Tuesday
Partly sunny, with a high near 30.
Tuesday Night
Mostly cloudy, with a low around 11.
Wednesday
Partly sunny, with a high near 21.
Wednesday Night
Mostly cloudy, with a low around -1.
New Year's Day
Sunny and cold, with a high near 9.
Thursday Night
Partly cloudy, with a low around -3.
Friday
Mostly sunny, with a high near 16.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Thornton IA
42.95°N 93.4°W
42.95°N 93.4°W
9:51 pm CST Dec 26, 2025
11pm CST Dec 26, 2025-6pm CST Jan 2, 2026
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