Hazardous Weather Conditions
Current conditions at
Mason City Municipal Airport (KMCW)
Lat: 43.15°NLon: 93.33°WElev: 1188ft.
Mostly Cloudy
15°F
-9°C
| Humidity | 64% |
| Wind Speed | S 12 mph |
| Barometer | 30.14 in (1022.9 mb) |
| Dewpoint | 5°F (-15°C) |
| Visibility | 10.00 mi |
| Wind Chill | 1°F (-17°C) |
| Last update | 20 Jan 1:53 pm CST |
Extended Forecast for
Chapin IA
Winter Weather Advisory January 20, 03:00pm until January 21, 03:00am
This Afternoon

High: 17 °F
Snow Likely
Tonight
Low: 11 °F
Snow then
Chance SnowWednesday
High: 28 °F
Partly Sunny
then Chance
Snow and
Patchy
Blowing SnowWednesday Night
Low: 5 °F
Patchy
Blowing Snow
and Windy
then Partly
CloudyThursday

High: 15 °F
Mostly Sunny
Thursday Night

Low: -17 °F
Partly Cloudy
Friday

High: -9 °F
Cold
Friday Night

Low: -17 °F
Partly Cloudy
Saturday

High: -2 °F
Cold
Detailed Forecast
This Afternoon
Snow likely, mainly after 5pm. Mostly cloudy, with a high near 17. Wind chill values as low as 5. South wind 6 to 8 mph. Chance of precipitation is 70%. Total daytime snow accumulation of less than a half inch possible.
Tonight
Snow, mainly before midnight. Low around 11. Wind chill values as low as zero. South southeast wind 5 to 9 mph becoming north after midnight. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
Wednesday
A 40 percent chance of snow after noon. Patchy blowing snow after 2pm. Partly sunny, with a high near 28. Wind chill values as low as zero. Windy, with a west southwest wind 9 to 14 mph increasing to 18 to 23 mph in the afternoon. Winds could gust as high as 30 mph. New snow accumulation of less than one inch possible.
Wednesday Night
Patchy blowing snow before 9pm. Partly cloudy, with a low around 5. Wind chill values as low as -10. Windy, with a west northwest wind 19 to 24 mph decreasing to 8 to 13 mph after midnight. Winds could gust as high as 30 mph.
Thursday
Mostly sunny, with a high near 15. West wind 8 to 14 mph.
Thursday Night
Partly cloudy, with a low around -17.
Friday
Mostly sunny and cold, with a high near -9.
Friday Night
Partly cloudy, with a low around -17.
Saturday
Partly sunny and cold, with a high near -2.
Saturday Night
Partly cloudy, with a low around -11.
Sunday
Mostly sunny and cold, with a high near 9.
Sunday Night
Partly cloudy, with a low around -5.
Monday
Sunny, with a high near 17.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Chapin IA
42.84°N 93.23°W
42.84°N 93.23°W
11:26 am CST Jan 20, 2026
2pm CST Jan 20, 2026-6pm CST Jan 26, 2026



