Thunderstorms and Heavy Rains Across Portions of the Central and Eastern US; Heat Expands to Portions of the East

Widespread showers and thunderstorms, some severe, may produce heavy downpours and flash flooding across much of the eastern and central U.S. Dangerous heat will continue in the Pacific Northwest and expand across portions of the East. Deep tropical moisture and associated thunderstorms will bring heavy rainfall and localized flash flooding across portions of Florida into the central Gulf Coast. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Des Moines International Airport (KDSM)

Lat: 41.53°NLon: 93.65°WElev: 942ft.

Mostly Cloudy

78°F

26°C

Humidity	74%
Wind Speed	SE 8 mph
Barometer	29.87 in (1010.7 mb)
Dewpoint	69°F (21°C)
Visibility	10.00 mi
Heat Index	80°F (27°C)
Last update	15 Jul 11:54 pm CDT

More Information:

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

Extended Forecast for

3 Miles SW Grimes IA

Overnight
Low: 70 °F
Showers
Likely
Wednesday
High: 82 °F
Chance
T-storms
Wednesday Night
Low: 59 °F
Chance
T-storms then
Mostly Cloudy
Thursday
High: 73 °F
Partly Sunny
Thursday Night
Low: 58 °F
Partly Cloudy
Friday
High: 79 °F
Slight Chance
Showers then
Slight Chance
T-storms
Friday Night
Low: 68 °F
Slight Chance
T-storms then
Chance
T-storms
Saturday
High: 86 °F
Chance
T-storms
Saturday Night
Low: 68 °F
Partly Cloudy
then Chance
T-storms

Detailed Forecast

Overnight

A chance of showers and thunderstorms between 2am and 3am, then showers likely and possibly a thunderstorm after 3am. Increasing clouds, with a low around 70. South southeast wind around 7 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Wednesday

A 40 percent chance of showers and thunderstorms, mainly before 3pm. Mostly cloudy, with a high near 82. South wind 6 to 8 mph becoming northwest in the afternoon. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Wednesday Night

A 30 percent chance of showers and thunderstorms, mainly before 8pm. Mostly cloudy, with a low around 59. North wind 8 to 11 mph, with gusts as high as 20 mph. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Thursday

Partly sunny, with a high near 73. North northeast wind 7 to 11 mph.

Thursday Night

Partly cloudy, with a low around 58. East wind around 6 mph.

Friday

A slight chance of showers, with thunderstorms also possible after 4pm. Partly sunny, with a high near 79. Chance of precipitation is 20%.

Friday Night

A 50 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 68.

Saturday

A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 86.

Saturday Night

A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 68.