Severe Thunderstorms in the Central Plains and Lower Missouri Valley; Heat Continues in the Southeast and Southwest

Severe thunderstorms capable of large hail and damaging wind gusts are forecast to impact the central Plains into the Lower Missouri Valley through this afternoon. Dangerous heat persists across the southern Plains, Southeast U.S. and Puerto Rico this week, and will return to the Southwest today. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Mason City Municipal Airport (KMCW)

Lat: 43.15°NLon: 93.33°WElev: 1188ft.

A Few Clouds

69°F

21°C

Humidity	87%
Wind Speed	W 9 mph
Barometer	29.95 in (1012.9 mb)
Dewpoint	65°F (18°C)
Visibility	10.00 mi
Last update	18 Aug 6:53 am CDT

More Information:

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

Extended Forecast for

Rockwell IASimilar City Names

Today
High: 78 °F
Chance
T-storms
Tonight
Low: 58 °F
Chance
T-storms then
Slight Chance
Showers
Wednesday
High: 77 °F
Mostly Sunny
Wednesday Night
Low: 56 °F
Partly Cloudy
Thursday
High: 79 °F
Sunny then
Slight Chance
T-storms
Thursday Night
Low: 61 °F
Chance
Showers
Friday
High: 82 °F
Slight Chance
T-storms
Friday Night
Low: 60 °F
Chance
T-storms
Saturday
High: 77 °F
Sunny

Detailed Forecast

Today

A 30 percent chance of showers and thunderstorms, mainly after 5pm. Partly sunny, with a high near 78. Light and variable wind becoming west 5 to 8 mph in the morning. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tonight

A chance of showers and thunderstorms before midnight, then a slight chance of showers between midnight and 1am. Partly cloudy, with a low around 58. Light north northwest wind. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Wednesday

Mostly sunny, with a high near 77. Calm wind.

Wednesday Night

Partly cloudy, with a low around 56. Calm wind.

Thursday

A slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Sunny, with a high near 79. Calm wind becoming south southwest 5 to 8 mph in the afternoon. Chance of precipitation is 20%.

Thursday Night

A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 61. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Friday

A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 82.

Friday Night

A 30 percent chance of showers and thunderstorms before 1am. Mostly clear, with a low around 60.

Saturday

Sunny, with a high near 77.

Saturday Night

Mostly clear, with a low around 57.

Sunday

Mostly sunny, with a high near 76.

Sunday Night

Partly cloudy, with a low around 59.