Dangerous, Heat Wave Persists in the Eastern U.S.; Severe Weather Expected in the Central Plains and Mid-Atlantic

A prolonged, dangerous heat wave will persist through the Independence Day weekend across the Ohio Valley, Mid-South, and East Coast. Severe thunderstorms are expected to produce damaging wind gusts from the Upper Ohio Valley into the Mid Atlantic, and across the central Great Plains this afternoon and evening. Large hail and heavy rain is also possible across the Great Plains. Read More >

Current conditions at

Marshalltown, Marshalltown Municipal Airport (KMIW)

Lat: 42.11° N Lon: 92.92° W Elev: 971 ft.

Light Rain

68°F

20°C

Humidity 90%
Wind Speed SW 10 mph
Barometer 29.99 in (1014.8 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 4 Jul 2:53 am CDT
Detailed forecast for

Tama County

Rest Of Tonight
Showers with a chance of thunderstorms. Some thunderstorms may produce heavy rainfall. Near steady temperature around 70. South winds around 5 mph. Chance of rain 90 percent.
Saturday
Mostly cloudy with showers likely with a chance of thunderstorms in the morning, then partly sunny with a slight chance of showers and thunderstorms in the afternoon. Some thunderstorms may produce heavy rainfall in the morning. Humid with highs in the mid 80s. Northwest winds around 5 mph. Chance of rain 60 percent.
Saturday Night
Partly cloudy in the evening, then becoming mostly cloudy. Humid with lows in the mid 60s. Northwest winds around 5 mph.
Sunday
Partly sunny. Humid with highs in the lower 80s. Northeast winds around 5 mph.
Sunday Night
Partly cloudy. Humid with lows in the lower 60s. Northeast winds around 5 mph.
Monday
Mostly sunny. Highs in the mid 80s.
Monday Night
Mostly clear. Lows in the lower 60s.
Tuesday
Sunny. Highs in the mid 80s.
Tuesday Night
Mostly clear. Lows in the mid 60s.
Wednesday
Mostly sunny with a slight chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 20 percent.
Wednesday Night
Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers and thunderstorms. Lows in the upper 60s. Chance of rain 40 percent.
Thursday
Mostly sunny. A chance of showers and thunderstorms, mainly in the morning. Highs in the mid 80s. Chance of rain 40 percent.
Thursday Night
Partly cloudy with a slight chance of thunderstorms. A chance of showers, mainly in the evening. Lows in the mid 60s. Chance of rain 30 percent.
Friday
Mostly sunny. Highs in the mid 80s.



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133 AM CDT Sat Jul 4 2026
 
 

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