Dangerous Heat in the Central and Eastern U.S.; Critical Fire Weather in the Great Basin and Southwest

Dangerous, record-breaking heat will intensify across most of the central and eastern U.S this week. Heat indices will likely exceed 100 degrees. Heat is likely to continue across the eastern U.S. through the Independence Day holiday weekend. Critical fire weather conditions will continue Tuesday across portions of the Four Corners and Great Basin, as dry conditions and gusty winds persist. Read More >

Hazardous Weather Conditions

Current conditions at

Grinnell Municipal Airfield (KGGI)

Lat: 41.71°NLon: 92.73°WElev: 1007ft.

Fair

82°F

28°C

Humidity	81%
Wind Speed	S 10 mph
Barometer	29.83 in
Dewpoint	76°F (24°C)
Visibility	10.00 mi
Heat Index	89°F (32°C)
Last update	29 Jun 10:15 pm CDT

More Information:

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

Extended Forecast for

3 Miles S Chelsea IA

Extreme Heat Warning June 29, 10:30pm until July 1, 10:00pm

Click here for hazard details and duration

Extreme Heat Warning

Extreme Heat Warning June 29, 10:30pm until July 1, 10:00pm
NOW until 10:00pm Wed
Extreme Heat Warning
Tonight
Low: 76 °F
Partly Cloudy
Tuesday
High: 96 °F
Sunny and
Breezy
Tuesday Night
Low: 74 °F
Slight Chance
T-storms then
Partly Cloudy
Wednesday
High: 95 °F
Sunny then
Sunny and
Breezy
Wednesday Night
Low: 75 °F
Mostly Clear
then Chance
T-storms
Thursday
High: 93 °F
Chance
T-storms
Thursday Night
Low: 72 °F
Chance
T-storms
Friday
High: 91 °F
Chance
Showers then
Chance
T-storms

Detailed Forecast

Tonight

Partly cloudy, with a low around 76. South southwest wind 10 to 14 mph, with gusts as high as 22 mph.

Tuesday

Sunny, with a high near 96. Heat index values as high as 101. Breezy, with a south southwest wind 10 to 16 mph, with gusts as high as 25 mph.

Tuesday Night

A slight chance of showers and thunderstorms between 8pm and 11pm. Partly cloudy, with a low around 74. South southwest wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.

Wednesday

Sunny, with a high near 95. Breezy, with a south southwest wind 9 to 16 mph, with gusts as high as 24 mph.

Wednesday Night

A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 75. South southwest wind 10 to 15 mph, with gusts as high as 23 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Thursday

A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Thursday Night

A 40 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 72.

Friday

A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.

Friday Night

Partly cloudy, with a low around 70.

Independence Day

Mostly sunny, with a high near 91.

Saturday Night

A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69.

Sunday

A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 88.