Severe Weather Threats Across the Plains; Dangerous Heat and Wildfire Concerns for the West; Watching the Tropics

Severe thunderstorms are expected across the Central Plains accompanied by damaging wind gusts and large hail. In addition, heavy rainfall may lead to instances of flash flooding from the Plains and mid-Atlantic regions. The heavy rainfall threat continues across Florida and across the northern Gulf as we monitor a tropical disturbance tracking westward. Critical fire weather for the Great Basin. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Grinnell Municipal Airfield (KGGI)

Lat: 41.71°NLon: 92.73°WElev: 1007ft.

Fair

85°F

29°C

Humidity	60%
Wind Speed	S 5 mph
Barometer	29.93 in
Dewpoint	69°F (21°C)
Visibility	10.00 mi
Heat Index	89°F (32°C)
Last update	15 Jul 6:15 pm CDT

More Information:

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

Extended Forecast for

Grinnell IA

Tonight
Low: 70 °F
Mostly Clear
then Slight
Chance
T-storms
Wednesday
High: 83 °F
Chance
T-storms
Wednesday Night
Low: 58 °F
Chance
T-storms then
Chance
Showers
Thursday
High: 72 °F
Mostly Cloudy
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

Tonight

A 10 percent chance of showers and thunderstorms after 5am. Increasing clouds, with a low around 70. South southeast wind 5 to 7 mph.

Wednesday

A 40 percent chance of showers and thunderstorms after 7am. Partly sunny, with a high near 83. South wind 6 to 9 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

A chance of showers and thunderstorms. Mostly cloudy, with a low around 58. North northwest wind 6 to 9 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Thursday

Mostly cloudy, with a high near 72. North wind 7 to 10 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.