Powerful Storm to Impact Eastern Third of U.S. this weekend.

A developing storm system will bring a myriad of significant impacts this weekend. Heavy snow up to 18 inches from the Ohio Valley to the Northeast, and ice up to a quarter of an inch is forecast in places. Heavy rain may cause flash flooding from the Mid-South to the Mid-Atlantic. Severe thunderstorms with damaging winds and isolated tornadoes will be possible in the Deep South. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

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Current conditions at

Mason City Municipal Airport (KMCW)

Lat: 43.15°NLon: 93.33°WElev: 1188ft.

Fair

-17°C

2°F

Humidity	80%
Wind Speed	NW 22 km/h
Barometer	1028.1 mb (30.29 in)
Dewpoint	-19°C (-3°F)
Visibility	16 km
Wind Chill	-27°C (-16°F)
Last update	19 Jan 12:53 pm CST

More Information:

Local Forecast Office More Local Wx 3 Day History Mobile Weather Hourly Weather Forecast

Extended Forecast for

Mason City Municipal Airport IA

This
Afternoon

Cold
High: -13 °C
Tonight

Increasing
Clouds
Low: -20 °C
Sunday

Snow Likely
then Chance
Snow
High: -12 °C
Sunday
Night

Mostly Cloudy
Low: -17 °C
M.L.King
Day

Mostly Cloudy
and Breezy
High: -8 °C
Monday
Night

Chance Wintry
Mix and
Breezy
Low: -8 °C
Tuesday

Wintry Mix
then Snow and
Blustery
High: -4 °C
Tuesday
Night

Chance Wintry
Mix and
Blustery then
Mostly Cloudy
Low: -15 °C
Wednesday

Mostly Sunny
High: -8 °C

Detailed Forecast

This Afternoon

Sunny and cold, with a high near -13. Wind chill values as low as -25. North wind 18 to 23 km/h, with gusts as high as 29 km/h.

Tonight

Increasing clouds, with a low around -20. Wind chill values as low as -30. North northwest wind 8 to 14 km/h.

Sunday

Snow likely, mainly before noon. Mostly cloudy and cold, with a high near -12. Wind chill values as low as -25. East southeast wind 8 to 11 km/h. Chance of precipitation is 70%. New snow accumulation of 1 to 2 centimeters possible.

Sunday Night

Mostly cloudy, with a low around -17. Wind chill values as low as -25. Southeast wind 11 to 18 km/h.

M.L.King Day

Mostly cloudy, with a high near -8. Breezy, with a southeast wind 18 to 27 km/h, with gusts as high as 42 km/h.

Monday Night

A chance of snow before 9pm, then a chance of snow and freezing drizzle between 9pm and 2am, then a chance of snow after 2am. Cloudy, with a low around -8. Breezy. Chance of precipitation is 50%. New precipitation amounts of less than 1 mm possible.

Tuesday

Snow, possibly mixed with freezing rain, becoming all snow after 10am. High near -4. Blustery. Chance of precipitation is 90%.

Tuesday Night

A chance of snow and freezing rain before 7pm, then a chance of snow between 7pm and midnight. Mostly cloudy, with a low around -15. Blustery. Chance of precipitation is 30%.

Wednesday

Mostly sunny, with a high near -8.

Wednesday Night

Mostly cloudy, with a low around -12.

Thursday

Mostly cloudy, with a high near -7.

Thursday Night

Mostly cloudy, with a low around -23.

Friday

Partly sunny and cold, with a high near -19.