Unsettled Weather in the Eastern U.S. through Memorial Day

Showers and thunderstorms are expected from Texas to the Northeast through Tuesday. Heavy rain will create mainly localized areas of flash flooding across the central Gulf Coast into the Appalachians. Elevated to Critical fire weather conditions due to gusty winds and low humidity are expected through Tuesday across Oregon and Nevada. Showers and thunderstorms will develop over the Northwest. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Mason City Municipal Airport (KMCW)

Lat: 43.15°NLon: 93.33°WElev: 1188ft.

Fair

67°F

19°C

Humidity	66%
Wind Speed	S 9 mph
Barometer	29.95 in (1013.2 mb)
Dewpoint	55°F (13°C)
Visibility	10.00 mi
Last update	25 May 11:53 pm CDT

More Information:

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

Extended Forecast for

Thornton IA

Tonight
Low: 59 °F
Slight Chance
Showers
Tuesday
High: 88 °F
Slight Chance
Showers then
Sunny
Tuesday Night
Low: 58 °F
Chance
Showers
Wednesday
High: 87 °F
Slight Chance
Showers then
Slight Chance
T-storms
Wednesday Night
Low: 57 °F
Mostly Clear
Thursday
High: 82 °F
Mostly Sunny
Thursday Night
Low: 55 °F
Partly Cloudy
Friday
High: 78 °F
Mostly Sunny
Friday Night
Low: 54 °F
Partly Cloudy

Detailed Forecast

Tonight

A 20 percent chance of showers after 4am. Mostly clear, with a low around 59. South wind 5 to 10 mph.

Tuesday

A 20 percent chance of showers before 10am. Partly sunny, then gradually becoming sunny, with a high near 88. South southwest wind around 10 mph.

Tuesday Night

A chance of showers and thunderstorms. Partly cloudy, with a low around 58. South southwest wind 5 to 7 mph becoming light and variable after midnight. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Wednesday

A slight chance of showers before 7am, then a slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 87. Calm wind becoming east around 6 mph in the afternoon. Chance of precipitation is 20%.

Wednesday Night

Mostly clear, with a low around 57. East wind 5 to 8 mph.

Thursday

Mostly sunny, with a high near 82.

Thursday Night

Partly cloudy, with a low around 55.

Friday

Mostly sunny, with a high near 78.

Friday Night

Partly cloudy, with a low around 54.

Saturday

Mostly sunny, with a high near 76.