Extreme Heat and Fire Weather Conditions in the West; Severe Thunderstorm Threat in the Northern Plains on Thursday

Extreme heat will may set some new daily temperature records across the Desert Southwest. Hot, dry and windy conditions and dry thunderstorms continue to bring fire weather concerns for portions of the Desert Southwest, the central Great Basin and Rockies. Severe thunderstorms and heavy rain are expected across the Northern Plains late Thursday. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Marshalltown, Marshalltown Municipal Airport (KMIW)

Lat: 42.11°NLon: 92.92°WElev: 971ft.

Fog/Mist

68°F

20°C

Humidity	96%
Wind Speed	E 5 mph
Barometer	30.08 in (1018.0 mb)
Dewpoint	67°F (19°C)
Visibility	5.00 mi
Last update	7 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

Overnight
Low: 67 °F
Isolated
T-storms
Thursday
High: 86 °F
Isolated
T-storms
Thursday Night
Low: 72 °F
Partly Cloudy
Friday
High: 90 °F
Mostly Sunny
then Sunny
and Breezy
Friday Night
Low: 73 °F
Partly Cloudy
then Chance
T-storms
Saturday
High: 88 °F
Chance
T-storms
Saturday Night
Low: 67 °F
T-storms
Likely
Sunday
High: 83 °F
Chance
T-storms
Sunday Night
Low: 65 °F
T-storms
Likely

Detailed Forecast

Overnight

Isolated showers and thunderstorms. Mostly cloudy, with a low around 67. South wind around 5 mph. Chance of precipitation is 20%.

Thursday

Isolated showers and thunderstorms before 3pm. Partly sunny, with a high near 86. South southeast wind 7 to 10 mph. Chance of precipitation is 20%.

Thursday Night

Partly cloudy, with a low around 72. South southeast wind around 9 mph.

Friday

Sunny, with a high near 90. Heat index values as high as 102. Breezy, with a south wind 10 to 16 mph, with gusts as high as 24 mph.

Friday Night

A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 73. South wind around 14 mph, with gusts as high as 21 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Saturday

A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Saturday Night

Showers and thunderstorms likely, mainly after 1am. Mostly cloudy, with a low around 67. Chance of precipitation is 70%.

Sunday

A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 83.

Sunday Night

Showers and thunderstorms likely, mainly after 1am. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.

Monday

A 30 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 82.

Monday Night

A 30 percent chance of showers. Partly cloudy, with a low around 62.

Tuesday

Sunny, with a high near 83.