Southwest Monsoon Flooding

Monsoonal conditions in the Southwest will lead to threats of flash flooding through the weekend. Severe thunderstorms will be possible through Friday night in the northern tier of the country and Saturday afternoon in the vicinity of the Southern Great Lakes. Warm conditions have prompted Heat Advisories for portions of the Midwest and ArkLaMiss this weekend. Read More >

Hazardous Weather Conditions

En Español

Current conditions at

Grinnell Municipal Airfield (KGGI)

Lat: 41.71°NLon: 92.73°WElev: 1007ft.

Fair

77°F

25°C

Humidity	85%
Wind Speed	SW 8 mph
Barometer	29.95 in
Dewpoint	73°F (23°C)
Visibility	10.00 mi
Heat Index	78°F (26°C)
Last update	24 Jul 7:15 am CDT

More Information:

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

Extended Forecast for

Montezuma IA

Heat Advisory July 24, 12:00pm until July 24, 08:00pm

Click here for hazard details and duration

Heat Advisory

Today

Mostly Sunny
then Slight
Chance
T-storms
High: 92 °F
Tonight

Partly Cloudy
Low: 67 °F
Sunday

Mostly Sunny
High: 91 °F
Sunday
Night

Partly Cloudy
Low: 67 °F
Monday

Sunny
High: 93 °F
Monday
Night

Mostly Clear
Low: 69 °F
Tuesday

Sunny
High: 95 °F
Tuesday
Night

Mostly Clear
Low: 72 °F
Wednesday

Hot
High: 97 °F

Detailed Forecast

Today

A 20 percent chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 92. Heat index values as high as 102. Southwest wind 7 to 10 mph.

Tonight

Partly cloudy, with a low around 67. North wind 3 to 6 mph.

Sunday

Mostly sunny, with a high near 91. Calm wind becoming west northwest around 5 mph in the afternoon.

Sunday Night

Partly cloudy, with a low around 67. Calm wind.

Monday

Sunny, with a high near 93. Calm wind becoming south around 6 mph in the afternoon.

Monday Night

Mostly clear, with a low around 69.

Tuesday

Sunny, with a high near 95.