Strong to Severe Thunderstorms in the East; Heat in the Central and Western U.S.

Strong to potentially severe thunderstorms with damaging wind gusts are forecast Thursday from parts of New England into the Mid Atlantic and Carolinas. Significant heat will expand across the West and Central Plains through Friday, potentially breaking daily high temperature records. Dangerous heat will then build into the Eastern U.S. this weekend through much of next week. Read More >

Hazardous Weather Conditions

Current conditions at

Grinnell Municipal Airfield (KGGI)

Lat: 41.71°NLon: 92.73°WElev: 1007ft.

Fair

84°F

29°C

Humidity	47%
Wind Speed	W 12 mph
Barometer	30.00 in
Dewpoint	62°F (17°C)
Visibility	10.00 mi
Heat Index	85°F (29°C)
Last update	19 Jun 2:55 pm CDT

More Information:

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

Extended Forecast for

Lynnville IA

Extreme Heat Watch June 21, 12:00pm until June 22, 09:00pm

Heat Advisory June 20, 12:00pm until June 20, 08:00pm

Click here for hazard details and duration

Extreme Heat Watch

Heat Advisory

Juneteenth
High: 87 °F
Sunny
Tonight
Low: 67 °F
Clear then
Chance
T-storms
Friday
High: 94 °F
Chance
T-storms and
Breezy then
Sunny and
Windy
Friday Night
Low: 76 °F
Mostly Clear
and Windy
Saturday
High: 96 °F
Sunny and
Windy
Saturday Night
Low: 77 °F
Clear and
Windy
Sunday
High: 95 °F
Sunny and
Windy
Sunday Night
Low: 75 °F
Clear and
Windy
Monday
High: 95 °F
Sunny then
Chance
Showers

Detailed Forecast

Juneteenth

Sunny, with a high near 87. West wind around 9 mph.

Tonight

A 30 percent chance of showers and thunderstorms after 3am. Increasing clouds, with a low around 67. South wind 6 to 9 mph.

Friday

A 30 percent chance of showers and thunderstorms, mainly before 11am. Mostly sunny, with a high near 94. Heat index values as high as 102. Windy, with a south wind 11 to 21 mph, with gusts as high as 30 mph. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Friday Night

Mostly clear, with a low around 76. Windy, with a south wind 18 to 21 mph, with gusts as high as 31 mph.

Saturday

Sunny, with a high near 96. Windy, with a south southwest wind 21 to 26 mph, with gusts as high as 36 mph.

Saturday Night

Clear, with a low around 77. Windy.

Sunday

Sunny, with a high near 95. Windy.

Sunday Night

Clear, with a low around 75. Windy.

Monday

A 30 percent chance of showers after 1pm. Sunny, with a high near 95.