Dangerous Heat Wave Continues; Severe Thunderstorms and Heavy Rain from the Central Plains to the Midwest

A prolonged, dangerous heat wave will continue today in the Midwest and Mississippi Valley, and persist through the Independence Day weekend across the Ohio Valley, Mid-South, and East Coast. Severe thunderstorm are expected from the northern/central Plains to the Mid-Atlantic. Isolated slash flooding is possible from the central Plains to the Upper Midwest. Read More >

Hazardous Weather Conditions

Current conditions at

Marshalltown, Marshalltown Municipal Airport (KMIW)

Lat: 42.11°NLon: 92.92°WElev: 971ft.

Partly Cloudy

75°F

24°C

Humidity	88%
Wind Speed	E 6 mph
Barometer	29.96 in (1014.1 mb)
Dewpoint	71°F (22°C)
Visibility	10.00 mi
Last update	3 Jul 8:53 pm CDT

More Information:

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

Extended Forecast for

4 Miles WSW Grundy Center IA

Flood Watch July 3, 09:55pm until July 4, 07:00am

Click here for hazard details and duration

Flood Watch

Flood Watch July 3, 09:55pm until July 4, 07:00am
NOW until 7:00am Sat
Flood Watch
Tonight
Low: 68 °F
Showers
Likely
Independence Day
High: 85 °F
Chance
T-storms then
Slight Chance
T-storms
Saturday Night
Low: 64 °F
Chance
Showers then
Mostly Cloudy
Sunday
High: 82 °F
Gradual
Clearing
Sunday Night
Low: 62 °F
Mostly Clear
Monday
High: 82 °F
Mostly Sunny
Monday Night
Low: 62 °F
Mostly Clear
Tuesday
High: 85 °F
Mostly Sunny

Detailed Forecast

Tonight

A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 10pm. Mostly cloudy, with a low around 68. Light and variable wind becoming west southwest around 6 mph after midnight. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

Independence Day

A 40 percent chance of showers and thunderstorms, mainly before 10am. Partly sunny, with a high near 85. Southwest wind 7 to 9 mph becoming west northwest in the afternoon. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Saturday Night

A 30 percent chance of showers and thunderstorms, mainly between 10pm and 11pm. Mostly cloudy, with a low around 64. Northwest wind 5 to 7 mph. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Sunday

Cloudy through mid morning, then gradual clearing, with a high near 82. Northwest wind around 8 mph.

Sunday Night

Mostly clear, with a low around 62. North wind 3 to 8 mph.

Monday

Mostly sunny, with a high near 82.

Monday Night

Mostly clear, with a low around 62.

Tuesday

Mostly sunny, with a high near 85.

Tuesday Night

Mostly clear, with a low around 64.