Dangerous Surf and Rip Currents for most of the Atlantic Shoreline; Record Heat for the West

Hurricane Erin continues to track northward. Tropical storm force winds, storm surge conditions will increase for the Outer Banks today and portions of coastal Virginia. Life-threatening surf and rip currents along much of the east coast of the U.S. this week. Major to extreme HeatRisk with new record high temperatures are expected for many areas of the western U.S. this week. 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

68°F

20°C

Humidity	96%
Wind Speed	NW 5 mph
Barometer	30.12 in (1018.9 mb)
Dewpoint	67°F (19°C)
Visibility	8.00 mi
Last update	20 Aug 7:53 am CDT

More Information:

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

Extended Forecast for

Plymouth IA

Today
High: 80 °F
Mostly Sunny
Tonight
Low: 61 °F
Mostly Clear
then Patchy
Fog
Thursday
High: 77 °F
Patchy Fog
then Mostly
Sunny
Thursday Night
Low: 60 °F
Partly Cloudy
Friday
High: 78 °F
Partly Sunny
then Chance
T-storms
Friday Night
Low: 56 °F
Chance
T-storms then
Slight Chance
Showers
Saturday
High: 71 °F
Sunny
Saturday Night
Low: 50 °F
Mostly Clear
Sunday
High: 64 °F
Sunny

Detailed Forecast

Today

Mostly sunny, with a high near 80. Northeast wind around 6 mph.

Tonight

Patchy fog after 4am. Otherwise, partly cloudy, with a low around 61. Northeast wind around 5 mph becoming calm in the evening.

Thursday

Patchy fog before 7am. Otherwise, mostly sunny, with a high near 77. Calm wind becoming south southeast around 5 mph in the afternoon.

Thursday Night

Partly cloudy, with a low around 60. Light southeast wind.

Friday

A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 78. Light and variable wind becoming south southwest around 6 mph in the morning.

Friday Night

A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Partly cloudy, with a low around 56. Chance of precipitation is 30%.

Saturday

Sunny, with a high near 71.

Saturday Night

Mostly clear, with a low around 50.

Sunday

Sunny, with a high near 64.

Sunday Night

Mostly clear, with a low around 45.

Monday

Sunny, with a high near 66.

Monday Night

Mostly clear, with a low around 44.