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

Grinnell Municipal Airfield (KGGI)

Lat: 41.71°NLon: 92.73°WElev: 1007ft.

Fair

70°F

21°C

Humidity	98%
Wind Speed	Calm
Barometer	29.89 in
Dewpoint	69°F (21°C)
Visibility	7.00 mi
Last update	16 Jul 1:35 am CDT

More Information:

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

Extended Forecast for

Grinnell IA

Overnight
Low: 70 °F
Slight Chance
T-storms
Wednesday
High: 83 °F
Chance
T-storms
Wednesday Night
Low: 59 °F
Chance
T-storms then
Mostly Cloudy
Thursday
High: 72 °F
Partly Sunny
Thursday Night
Low: 57 °F
Partly Cloudy
Friday
High: 77 °F
Slight Chance
Showers
Friday Night
Low: 66 °F
Mostly Cloudy
then Chance
T-storms
Saturday
High: 85 °F
Chance
T-storms
Saturday Night
Low: 67 °F
Chance
T-storms

Detailed Forecast

Overnight

A 20 percent chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 70. South southeast wind around 5 mph.

Wednesday

A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 83. South wind 6 to 8 mph becoming west northwest in the afternoon. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Wednesday Night

A 30 percent chance of showers and thunderstorms, mainly before 9pm. Mostly cloudy, with a low around 59. North northwest wind 7 to 10 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 72. North northeast wind 7 to 11 mph.

Thursday Night

Partly cloudy, with a low around 57. East wind 3 to 6 mph.

Friday

A 20 percent chance of showers before 1pm. Partly sunny, with a high near 77.

Friday Night

A 50 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 66.

Saturday

A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 85.

Saturday Night

A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67.