Dangerous Heat in the East; Critical Fire Weather in the 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 today and likely Tuesday across portions of the Four Corners and northern High Plains. Read More >

Hazardous Weather Conditions

Current conditions at

Grinnell Municipal Airfield (KGGI)

Lat: 41.71°NLon: 92.73°WElev: 1007ft.

Partly Cloudy

90°F

32°C

Humidity	64%
Wind Speed	S 18 G 28 mph
Barometer	29.79 in
Dewpoint	76°F (24°C)
Visibility	10.00 mi
Heat Index	102°F (39°C)
Last update	29 Jun 2:15 pm CDT

More Information:

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

Extended Forecast for

Hartwick IA

Extreme Heat Warning June 29, 02:47pm until June 30, 09:00pm

Click here for hazard details and duration

Extreme Heat Warning

Extreme Heat Warning June 29, 02:47pm until June 30, 09:00pm
NOW until 9:00pm Tue
Extreme Heat Warning
This Afternoon
High: 92 °F
Sunny and
Breezy
Tonight
Low: 75 °F
Partly Cloudy
and Breezy
then 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 Slight
Chance
T-storms
Thursday
High: 93 °F
Chance
T-storms
Thursday Night
Low: 72 °F
Chance
T-storms

Detailed Forecast

This Afternoon

Sunny, with a steady temperature around 92. Heat index values as high as 105. Breezy, with a south wind 18 to 20 mph, with gusts as high as 28 mph.

Tonight

Partly cloudy, with a low around 75. Breezy, with a south wind 11 to 18 mph, with gusts as high as 28 mph.

Tuesday

Sunny, with a high near 96. Heat index values as high as 102. Breezy, with a south southwest wind 13 to 16 mph, with gusts as high as 25 mph.

Tuesday Night

A slight chance of showers and thunderstorms between 9pm and 11pm. Partly cloudy, with a low around 74. South southwest wind 11 to 13 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 10 to 16 mph, with gusts as high as 24 mph.

Wednesday Night

A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 75.

Thursday

A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93.

Thursday Night

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

Friday

A chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 91. Chance of precipitation is 30%.

Friday Night

Partly cloudy, with a low around 70.