Heavy Rainfall Continues in Hawaii; Severe Thunderstorms and Heavy Rainfall in the Plains and Southern Appalachians

Areas of gusty winds, heavy rain leading to flash flooding, and high surf continue across portions of Hawaii as Tropical Storm Lala continues to move away from the islands. Severe thunderstorms and heavy rainfall will shift into the southern Appalachians today. Strong to severe thunderstorms may produce large hail, scattered wind gusts, and heavy rain today across the northern and central Plains. 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

75°F

24°C

Humidity	60%
Wind Speed	NW 8 mph
Barometer	30.13 in (1019.3 mb)
Dewpoint	60°F (16°C)
Visibility	10.00 mi
Last update	17 Aug 10:53 am CDT

More Information:

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

Extended Forecast for

Mason City IA

Today
High: 79 °F
Sunny
Tonight
Low: 63 °F
Chance
T-storms
Tuesday
High: 77 °F
Chance
Showers then
Showers
Tuesday Night
Low: 58 °F
Chance
T-storms then
Slight Chance
Showers
Wednesday
High: 75 °F
Mostly Sunny
Wednesday Night
Low: 56 °F
Partly Cloudy
Thursday
High: 77 °F
Slight Chance
Showers
Thursday Night
Low: 58 °F
Chance
Showers
Friday
High: 79 °F
Mostly Sunny

Detailed Forecast

Today

Sunny, with a high near 79. West wind 5 to 7 mph.

Tonight

A chance of showers and thunderstorms before 4am, then a slight chance of showers after 5am. Partly cloudy, with a low around 63. South southwest wind 3 to 6 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tuesday

A chance of showers and thunderstorms, then showers and possibly a thunderstorm after noon. High near 77. West southwest wind around 5 mph becoming northwest in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Tuesday Night

A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Mostly cloudy, with a low around 58. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Wednesday

Mostly sunny, with a high near 75. Calm wind.

Wednesday Night

Partly cloudy, with a low around 56.

Thursday

A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 77.

Thursday Night

A 30 percent chance of showers, mainly after 1am. Mostly clear, with a low around 58.

Friday

Mostly sunny, with a high near 79.

Friday Night

Partly cloudy, with a low around 60.