Severe Weather and Heavy Rainfall in the Midwest and Desert Southwest; Mid-Summer Heat Continues

Severe thunderstorm and heavy rainfall are possible in the Midwest into the Central Appalachians and the Desert Southwest early this week. Storms are also expected in parts of the northern Plains today. Fire weather and air quality concerns will persist across portions of the West. Mid-summer heat will continue across much of the CONUS this week, especially in the the south-central High Plains. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Des Moines International Airport (KDSM)

Lat: 41.53°NLon: 93.65°WElev: 942ft.

Partly Cloudy

88°F

31°C

Humidity	63%
Wind Speed	S 9 mph
Barometer	29.89 in (1011.1 mb)
Dewpoint	74°F (23°C)
Visibility	10.00 mi
Heat Index	97°F (36°C)
Last update	10 Aug 5:54 pm CDT

More Information:

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

Extended Forecast for

Grimes IA

Tonight
Low: 71 °F
Partly Cloudy
Tuesday
High: 89 °F
Slight Chance
T-storms then
Sunny
Tuesday Night
Low: 71 °F
Partly Cloudy
then Chance
T-storms
Wednesday
High: 86 °F
Chance
T-storms then
Chance
Showers
Wednesday Night
Low: 68 °F
Partly Cloudy
then Showers
Likely
Thursday
High: 79 °F
Showers
Thursday Night
Low: 66 °F
Showers
Friday
High: 79 °F
Chance
T-storms
Friday Night
Low: 67 °F
Showers
Likely

Detailed Forecast

Tonight

Partly cloudy, with a low around 71. South southwest wind around 5 mph becoming light and variable.

Tuesday

A 10 percent chance of showers and thunderstorms before 7am. Mostly sunny, with a high near 89. Heat index values as high as 100. East northeast wind around 7 mph becoming southwest in the afternoon.

Tuesday Night

A 30 percent chance of showers and thunderstorms after 1am. Mostly clear, then becoming mostly cloudy toward daybreak, with a low around 71. North northeast wind around 5 mph becoming east after midnight. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Wednesday

A 30 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 86. East wind around 7 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Wednesday Night

Showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 68. East northeast wind around 7 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

Thursday

Showers and possibly a thunderstorm. High near 79. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

Thursday Night

Showers and possibly a thunderstorm. Low around 66. Chance of precipitation is 80%.

Friday

A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 79.

Friday Night

Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 67. Chance of precipitation is 60%.

Saturday

A 40 percent chance of showers. Partly sunny, with a high near 81.

Saturday Night

Showers and thunderstorms likely. Mostly cloudy, with a low around 66. Chance of precipitation is 60%.

Sunday

A 40 percent chance of showers. Mostly cloudy, with a high near 78.