Monitoring Tsunami Impacts Across the Pacific; Air Quality Concerns; Dangerous Heat; Critical Fire Weather for the West

Tsunami impacts continue for portions of the Pacific basin. Wildfire smoke causes unhealthy air in Midwest to Great Lakes. Heat dome spans Mississippi Valley to Mid-Atlantic with excessive heat warnings and advisories. Critical fire weather in Great Basin to Pacific Northwest (dry thunderstorms). Cold front spawns severe storms/heavy rain in Central U.S. today, shifts to East Coast Thursday. Read More >

Hazardous Weather Conditions

Current conditions at

Mason City Municipal Airport (KMCW)

Lat: 43.15°NLon: 93.33°WElev: 1188ft.

Fair

76°F

24°C

Humidity	72%
Wind Speed	NW 3 mph
Barometer	30.12 in (1018.7 mb)
Dewpoint	66°F (19°C)
Visibility	10.00 mi
Heat Index	78°F (26°C)
Last update	30 Jul 11:53 am CDT

More Information:

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

Extended Forecast for

3 Miles W Mason City IA

Flood Warning July 30, 12:16pm until August 1, 07:00pm

Click here for hazard details and duration

Flood Warning

Flood Warning July 30, 12:16pm until August 1, 07:00pm
NOW until 7:00pm Fri
Flood Warning
This Afternoon
High: 73 °F
Chance
T-storms
Tonight
Low: 57 °F
Slight Chance
T-storms then
Mostly Cloudy
Thursday
High: 74 °F
Sunny
Thursday Night
Low: 51 °F
Mostly Clear
Friday
High: 74 °F
Sunny
Friday Night
Low: 52 °F
Partly Cloudy
Saturday
High: 74 °F
Mostly Sunny
Saturday Night
Low: 55 °F
Mostly Cloudy

Detailed Forecast

This Afternoon

A 50 percent chance of showers and thunderstorms, mainly before 5pm. Cloudy, with a high near 73. Northeast wind 7 to 10 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tonight

A 20 percent chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 57. Northeast wind 6 to 10 mph.

Thursday

Sunny, with a high near 74. East northeast wind 6 to 9 mph.

Thursday Night

Mostly clear, with a low around 51. North northeast wind around 6 mph becoming calm after midnight.

Friday

Sunny, with a high near 74. Calm wind becoming east around 5 mph in the afternoon.

Friday Night

Partly cloudy, with a low around 52.

Saturday

Mostly sunny, with a high near 74.