Thunderstorms and Heavy Rains Across Portions of the Central and Eastern US; Heat Expands to Portions of the East

Widespread showers and thunderstorms, some severe, may produce heavy downpours and flash flooding across much of the eastern and central U.S. Dangerous heat will continue in the Pacific Northwest and expand across portions of the East. Deep tropical moisture and associated thunderstorms will bring heavy rainfall and localized flash flooding across portions of Florida into the central Gulf Coast. 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

74°F

23°C

Humidity	91%
Wind Speed	SE 8 mph
Barometer	29.88 in (1010.5 mb)
Dewpoint	71°F (22°C)
Visibility	10.00 mi
Last update	15 Jul 10:53 pm CDT

More Information:

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

Extended Forecast for

Mason City IA

Tonight
Low: 67 °F
Chance
T-storms
Wednesday
High: 78 °F
Showers
Likely
Wednesday Night
Low: 53 °F
Slight Chance
T-storms then
Mostly Cloudy
Thursday
High: 71 °F
Mostly Sunny
Thursday Night
Low: 53 °F
Mostly Clear
Friday
High: 76 °F
Mostly Sunny
Friday Night
Low: 64 °F
Slight Chance
T-storms then
Chance
T-storms
Saturday
High: 82 °F
Chance
T-storms
Saturday Night
Low: 62 °F
Chance
Showers

Detailed Forecast

Tonight

A 30 percent chance of showers and thunderstorms, mainly after 4am. Increasing clouds, with a low around 67. South wind around 6 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Wednesday

Showers and thunderstorms likely, mainly before 1pm. Mostly cloudy, with a high near 78. Light and variable wind becoming northwest 5 to 8 mph in the morning. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.

Wednesday Night

A 10 percent chance of showers and thunderstorms before 7pm. Mostly cloudy, with a low around 53. North northwest wind around 11 mph, with gusts as high as 20 mph.

Thursday

Mostly sunny, with a high near 71. Northeast wind 7 to 10 mph.

Thursday Night

Mostly clear, with a low around 53. Northeast wind around 6 mph becoming calm in the evening.

Friday

Mostly sunny, with a high near 76.

Friday Night

A 50 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 64.

Saturday

A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 82.

Saturday Night

A 30 percent chance of showers before 1am. Partly cloudy, with a low around 62.