Watching Hurricane Erin; Heavy Rainfall Threat for Upper Midwest; Heatrisk for Mississippi Valley

Hurricane Erin continues to track westward with its outer bands bringing heavy rainfall and gusty winds for Puerto Rico and US Virgin Islands. Life-threatening surf and rip currents are occurring and will spread across the Atlantic coasts this week. Meanwhile, heavy rainfall and possible flooding are in the forecast for upper Midwest through Monday. Heatrisk continues for the Mississippi Valley. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Marshalltown, Marshalltown Municipal Airport (KMIW)

Lat: 42.11°NLon: 92.92°WElev: 971ft.

Partly Cloudy

77°F

25°C

Humidity	94%
Wind Speed	E 7 mph
Barometer	30.04 in (1016.2 mb)
Dewpoint	75°F (24°C)
Visibility	8.00 mi
Heat Index	78°F (26°C)
Last update	17 Aug 8:53 am CDT

More Information:

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

Extended Forecast for

6 Miles NNE Whitten IA

Today
High: 89 °F
Sunny
Tonight
Low: 72 °F
Mostly Clear
then Slight
Chance
T-storms
Monday
High: 88 °F
Chance
T-storms
Monday Night
Low: 68 °F
Chance
T-storms
Tuesday
High: 81 °F
Slight Chance
T-storms then
Mostly Sunny
Tuesday Night
Low: 62 °F
Partly Cloudy
Wednesday
High: 78 °F
Mostly Sunny
Wednesday Night
Low: 59 °F
Mostly Clear
Thursday
High: 78 °F
Sunny

Detailed Forecast

Today

Sunny, with a high near 89. Heat index values as high as 100. South southeast wind 6 to 8 mph.

Tonight

A 20 percent chance of showers and thunderstorms after 3am. Partly cloudy, with a low around 72. East southeast wind around 8 mph.

Monday

A 40 percent chance of showers and thunderstorms, mainly before 1pm. Mostly cloudy, then gradually becoming sunny, with a high near 88. South wind 8 to 10 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Monday Night

A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68. West southwest wind around 6 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tuesday

A slight chance of thunderstorms before 7am. Mostly sunny, with a high near 81. North wind 6 to 8 mph. Chance of precipitation is 10%.

Tuesday Night

Partly cloudy, with a low around 62.

Wednesday

Mostly sunny, with a high near 78.

Wednesday Night

Mostly clear, with a low around 59.

Thursday

Sunny, with a high near 78.

Thursday Night

Mostly clear, with a low around 60.