Dangerous Heat in the Central and Eastern U.S.; Severe Thunderstorms in the Central U.S. and Northeast; Critical Fire Weather in the Four Corners

Dangerous, record-breaking heat will intensify across most of the central and eastern U.S this week. Heat indices will likely exceed 100 degrees. Severe thunderstorms are forecast from parts of the central High Plains into the Upper Midwest, and across parts of the Northeast. Critical fire weather conditions will continue across portions of the Four Corners and Great Basin. Read More >

Hazardous Weather Conditions

Current conditions at

Knoxville (KOXV)

Lat: 41.3°NLon: 93.12°WElev: 928ft.

Partly Cloudy

86°F

30°C

Humidity	75%
Wind Speed	S 7 mph
Barometer	29.87 in
Dewpoint	77°F (25°C)
Visibility	9.00 mi
Heat Index	97°F (36°C)
Last update	30 Jun 8:35 pm CDT

More Information:

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

Extended Forecast for

Sandyville IA

Extreme Heat Warning June 30, 08:41pm until July 2, 10:00pm

Click here for hazard details and duration

Extreme Heat Warning

Extreme Heat Warning June 30, 08:41pm until July 2, 10:00pm
NOW until 10:00pm Thu
Extreme Heat Warning
Tonight
Low: 75 °F
Partly Cloudy
Wednesday
High: 92 °F
Mostly Sunny
and Breezy
Wednesday Night
Low: 75 °F
Chance
T-storms and
Breezy
Thursday
High: 92 °F
Chance
T-storms
Thursday Night
Low: 74 °F
Slight Chance
T-storms
Friday
High: 93 °F
Slight Chance
T-storms
Friday Night
Low: 72 °F
Chance
T-storms
Independence Day
High: 88 °F
Chance
T-storms

Detailed Forecast

Tonight

Partly cloudy, with a low around 75. South southwest wind 13 to 15 mph, with gusts as high as 24 mph.

Wednesday

Mostly sunny, with a high near 92. Breezy, with a south southwest wind 14 to 18 mph, with gusts as high as 26 mph.

Wednesday Night

A 30 percent chance of showers and thunderstorms, mainly between 4am and 5am. Partly cloudy, with a low around 75. Breezy, with a south wind 14 to 17 mph, with gusts as high as 26 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, mainly between 7am and 1pm. Mostly sunny, with a high near 92. Southwest wind 10 to 13 mph, with gusts as high as 20 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Thursday Night

A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74. South wind around 11 mph, with gusts as high as 20 mph.

Friday

A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93.

Friday Night

A 30 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 72.

Independence Day

A 40 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 88.

Saturday Night

A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70.

Sunday

A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 87.