National Weather Service

News Headlines

Heavy Rainfall Possible This Morning

Hazardous Weather Conditions

Current conditions at

Grinnell Municipal Airfield (KGGI)

Lat: 41.71°NLon: 92.73°WElev: 1007ft.

Light Rain

73°F

23°C

Humidity	100%
Wind Speed	SE 7 mph
Barometer	29.97 in
Dewpoint	73°F (23°C)
Visibility	7.00 mi
Last update	26 Jul 8:15 am CDT

More Information:

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

Extended Forecast for

4 Miles NNE Lynnville IA

Extreme Heat Watch July 27, 12:00pm until July 27, 08:00pm

Click here for hazard details and duration

Extreme Heat Watch

Today
High: 84 °F
Chance
T-storms and
Patchy Fog
then Slight
Chance
T-storms
Tonight
Low: 72 °F
Partly Cloudy
Sunday
High: 90 °F
Mostly Sunny
Sunday Night
Low: 74 °F
Mostly Clear
Monday
High: 95 °F
Sunny
Monday Night
Low: 73 °F
Mostly Clear
then Slight
Chance
T-storms
Tuesday
High: 92 °F
Slight Chance
T-storms
Tuesday Night
Low: 69 °F
Chance
T-storms
Wednesday
High: 80 °F
Chance
T-storms

Detailed Forecast

Today

A 50 percent chance of showers and thunderstorms, mainly before 1pm. Patchy fog before 9am. Otherwise, partly sunny, with a high near 84. Southeast wind around 6 mph becoming south southwest in the afternoon. New rainfall amounts between a quarter and half of an inch possible.

Tonight

Partly cloudy, with a low around 72. Light and variable wind.

Sunday

Mostly sunny, with a high near 90. Heat index values as high as 103. Calm wind becoming south around 6 mph in the afternoon.

Sunday Night

Mostly clear, with a low around 74. South wind around 5 mph.

Monday

Sunny, with a high near 95. Southwest wind around 6 mph.

Monday Night

A 20 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 73.

Tuesday

A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92.