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

Current conditions at

Marshalltown, Marshalltown Municipal Airport (KMIW)

Lat: 42.11°NLon: 92.92°WElev: 971ft.

Fog/Mist

67°F

19°C

Humidity	100%
Wind Speed	W 3 mph
Barometer	30.09 in (1018.2 mb)
Dewpoint	67°F (19°C)
Visibility	5.00 mi
Last update	20 Aug 5:53 am CDT

More Information:

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

Extended Forecast for

Grundy Center IA

Today
High: 83 °F
Patchy Fog
then Sunny
Tonight
Low: 62 °F
Mostly Clear
then Patchy
Fog
Thursday
High: 78 °F
Patchy Fog
then Sunny
Thursday Night
Low: 60 °F
Mostly Clear
Friday
High: 80 °F
Mostly Sunny
Friday Night
Low: 59 °F
Chance
T-storms then
Chance
Showers
Saturday
High: 74 °F
Sunny
Saturday Night
Low: 51 °F
Mostly Clear
Sunday
High: 67 °F
Sunny

Detailed Forecast

Today

Patchy fog before 8am. Otherwise, sunny, with a high near 83. Calm wind becoming north northeast 5 to 8 mph in the morning.

Tonight

Patchy fog after 5am. Otherwise, mostly clear, with a low around 62. Northeast wind 3 to 7 mph.

Thursday

Patchy fog before 7am. Otherwise, mostly sunny, with a high near 78. East southeast wind 3 to 5 mph.

Thursday Night

Mostly clear, with a low around 60. Light and variable wind.

Friday

Mostly sunny, with a high near 80. South wind 3 to 6 mph.

Friday Night

A chance of showers and thunderstorms. Partly cloudy, with a low around 59. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Saturday

Sunny, with a high near 74.

Saturday Night

Mostly clear, with a low around 51.

Sunday

Sunny, with a high near 67.

Sunday Night

Clear, with a low around 46.

Monday

Sunny, with a high near 67.

Monday Night

Mostly clear, with a low around 45.