Thunderstorms and Heavy Rainfall in the Plains; Hazardous Heat in the South and Southeast

Severe thunderstorms will be possible across the northern/central Plains through Tuesday afternoon and from the central Plains to the Mid-Mississippi Valley Tuesday evening through Wednesday morning. Storms may produce large hail and damaging wind gusts, and heavy rainfall may lead to scattered instances of flash flooding. Meanwhile, hazardous heat persists across the South and Southeast. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Mason City Municipal Airport (KMCW)

Lat: 43.15°NLon: 93.33°WElev: 1188ft.

Partly Cloudy

69°F

21°C

Humidity	81%
Wind Speed	SW 9 mph
Barometer	29.98 in (1013.7 mb)
Dewpoint	63°F (17°C)
Visibility	10.00 mi
Last update	18 Aug 3:53 am CDT

More Information:

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

Extended Forecast for

Rockwell IASimilar City Names

Overnight
Low: 64 °F
Chance
T-storms
Tuesday
High: 78 °F
Chance
T-storms
Tuesday Night
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

Detailed Forecast

Overnight

A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a steady temperature around 64. Southwest wind around 6 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tuesday

A 40 percent chance of showers and thunderstorms, mainly after 5pm. Partly sunny, with a high near 78. South wind 5 to 7 mph becoming north northwest in the afternoon. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tuesday Night

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. Chance of precipitation is 20%.

Thursday Night

A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 61.

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.