Heat Persists in the South Central U.S. and California; Heavy Rain in the Ohio Valley

Sweltering heat remains across the South-Central Plains and Lower/Middle Mississippi Valley, as well as in the Southwest and California this week with limited nighttime relief. Heavy rainfall will lead to localized areas of flash flooding in parts of the Ohio Valley/Central Appalachians. Dry and breezy conditions will enhance fire weather concerns across the northern Rockies and High 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

53°F

12°C

Humidity	96%
Wind Speed	S 3 mph
Barometer	30.04 in (1016.4 mb)
Dewpoint	52°F (11°C)
Visibility	10.00 mi
Last update	10 Sep 4:53 am CDT

More Information:

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

Extended Forecast for

Sheffield IA

Today
High: 78 °F
Patchy Fog
then Sunny
Tonight
Low: 57 °F
Mostly Clear
Friday
High: 78 °F
Sunny then
Mostly Sunny
and Breezy
Friday Night
Low: 63 °F
Partly Cloudy
then Slight
Chance
T-storms
Saturday
High: 75 °F
Mostly Sunny
Saturday Night
Low: 52 °F
Partly Cloudy
Sunday
High: 71 °F
Showers
Likely
Sunday Night
Low: 60 °F
Chance
T-storms then
Showers
Likely
Monday
High: 76 °F
Showers and
Breezy

Detailed Forecast

Today

Patchy fog between 7am and 8am. Otherwise, sunny, with a high near 78. Calm wind.

Tonight

Mostly clear, with a low around 57. Calm wind becoming south 5 to 7 mph after midnight.

Friday

Sunny, with a high near 78. Breezy, with a south wind 7 to 17 mph, with gusts as high as 24 mph.

Friday Night

A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 63. South wind 9 to 14 mph, with gusts as high as 20 mph.

Saturday

Mostly sunny, with a high near 75. North wind 8 to 11 mph.

Saturday Night

Partly cloudy, with a low around 52.

Sunday

A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 71. Chance of precipitation is 60%.

Sunday Night

A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 60. Chance of precipitation is 70%.

Monday

Showers, with thunderstorms also possible after 1pm. High near 76. Breezy. Chance of precipitation is 80%.

Monday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 52. Chance of precipitation is 40%.

Tuesday

Partly sunny, with a high near 65.

Tuesday Night

Partly cloudy, with a low around 49.

Wednesday

A 30 percent chance of showers. Partly sunny, with a high near 66.