Heavy Rainfall and Flooding in the Mid-Atlantic; Heat and Wildfire Concerns in the West

Slow moving showers and thunderstorms may result in flash flooding for portions of the mid-Atlantic region through tonight. Meanwhile, excessive heat will continue to build across the West through Tuesday. Heat Advisories and Extreme Heat Warnings are in effect. Fire Weather concerns continue for the West with dry and breezy conditions. Watching the tropics across the Southeast. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Grinnell Municipal Airfield (KGGI)

Lat: 41.71°NLon: 92.73°WElev: 1007ft.

Fair

66°F

19°C

Humidity	95%
Wind Speed	Calm
Barometer	30.03 in
Dewpoint	64°F (18°C)
Visibility	7.00 mi
Last update	15 Jul 5:15 am CDT

More Information:

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

Extended Forecast for

Grinnell IA

Today
High: 87 °F
Sunny
Tonight
Low: 70 °F
Mostly Clear
Wednesday
High: 84 °F
Chance
T-storms
Wednesday Night
Low: 60 °F
Showers
Likely
Thursday
High: 72 °F
Mostly Cloudy
then Slight
Chance
Showers
Thursday Night
Low: 59 °F
Mostly Cloudy
Friday
High: 79 °F
Mostly Sunny
Friday Night
Low: 66 °F
Slight Chance
Showers then
Chance
T-storms
Saturday
High: 85 °F
Chance
T-storms

Detailed Forecast

Today

Sunny, with a high near 87. South wind 5 to 9 mph.

Tonight

Mostly clear, with a low around 70. South southeast wind 3 to 5 mph.

Wednesday

A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 84. South wind 6 to 8 mph becoming west in the afternoon. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Wednesday Night

Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 60. North northwest wind 6 to 8 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Thursday

A 20 percent chance of showers after 1pm. Mostly cloudy, with a high near 72. North wind 8 to 10 mph.

Thursday Night

Mostly cloudy, with a low around 59.

Friday

Mostly sunny, with a high near 79.

Friday Night

A slight chance of showers, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 66. Chance of precipitation is 50%.

Saturday

A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 85.

Saturday Night

A chance of showers, with thunderstorms also possible after 1am. Partly cloudy, with a low around 68. Chance of precipitation is 40%.

Sunday

A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 85.

Sunday Night

A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68.

Monday

Mostly sunny, with a high near 85.