Severe Thunderstorms and Heavy Rainfall Across the Midwest into the Great Lakes Region; Significant Heat in the Southwest

Strong to severe storms may produce damaging winds, isolated hail, and a few tornadoes from the Midwest into the lower Great Lakes. These storms may also produce areas of heavy rain and flash flooding. Significant heat will continue across parts of the Desert Southwest into western Texas and north Alaska. Dangerous heat will also build into the Eastern and Central U.S. and continue into next week. Read More >

Hazardous Weather Conditions

Current conditions at

Mason City Municipal Airport (KMCW)

Lat: 43.15°NLon: 93.33°WElev: 1188ft.

Partly Cloudy

76°F

24°C

Humidity	72%
Wind Speed	N 7 mph
Barometer	29.81 in (1008.3 mb)
Dewpoint	66°F (19°C)
Visibility	10.00 mi
Heat Index	78°F (26°C)
Last update	18 Jun 1:53 pm CDT

More Information:

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

Extended Forecast for

Rockwell IASimilar City Names

Extreme Heat Watch June 21, 12:00pm until June 22, 09:00pm

Click here for hazard details and duration

Extreme Heat Watch

This Afternoon
High: 78 °F
Chance
T-storms
Tonight
Low: 59 °F
Showers
Likely then
Mostly Clear
Juneteenth
High: 85 °F
Sunny
Thursday Night
Low: 66 °F
Mostly Clear
then Chance
Showers
Friday
High: 90 °F
Slight Chance
T-storms and
Windy
Friday Night
Low: 75 °F
Mostly Clear
and Windy
Saturday
High: 94 °F
Sunny and
Windy
Saturday Night
Low: 75 °F
Mostly Clear
and Breezy
Sunday
High: 93 °F
Sunny and
Windy

Detailed Forecast

This Afternoon

A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 78. North northwest wind 5 to 9 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tonight

Showers and thunderstorms likely, mainly before 10pm. Mostly cloudy during the early evening, then gradual clearing, with a low around 59. West northwest wind 6 to 8 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Juneteenth

Sunny, with a high near 85. West wind 6 to 10 mph.

Thursday Night

A 30 percent chance of showers and thunderstorms after 1am. Increasing clouds, with a low around 66. South southwest wind 7 to 10 mph. 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. Sunny, with a high near 90. Windy, with a south wind 10 to 15 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 30 mph.

Friday Night

Mostly clear, with a low around 75. Windy.

Saturday

Sunny, with a high near 94. Windy.

Saturday Night

Mostly clear, with a low around 75. Breezy.

Sunday

Sunny, with a high near 93. Windy.

Sunday Night

A 30 percent chance of showers after 1am. Mostly clear, with a low around 72. Windy.

Monday

A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.