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.

A Few Clouds

88°F

31°C

Humidity	70%
Wind Speed	S 7 mph
Barometer	29.86 in
Dewpoint	77°F (25°C)
Visibility	9.00 mi
Heat Index	100°F (38°C)
Last update	30 Jun 8:15 pm CDT

More Information:

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

Extended Forecast for

2 Miles SSW Knoxville IA

Extreme Heat Warning June 30, 08:35pm until July 2, 10:00pm

Click here for hazard details and duration

Extreme Heat Warning

Extreme Heat Warning June 30, 08:35pm until July 2, 10:00pm
NOW until 10:00pm Thu
Extreme Heat Warning
Tonight
Low: 76 °F
Partly Cloudy
Wednesday
High: 92 °F
Mostly Sunny
and Breezy
Wednesday Night
Low: 76 °F
Mostly Clear
then Slight
Chance
T-storms
Thursday
High: 91 °F
Slight Chance
T-storms
Thursday Night
Low: 75 °F
Partly Cloudy
then Slight
Chance
T-storms
Friday
High: 91 °F
Slight Chance
T-storms
Friday Night
Low: 73 °F
Chance
T-storms
Independence Day
High: 88 °F
Chance
T-storms

Detailed Forecast

Tonight

Partly cloudy, with a low around 76. South southwest wind 11 to 14 mph, with gusts as high as 23 mph.

Wednesday

Mostly sunny, with a high near 92. Breezy, with a south southwest wind 13 to 17 mph, with gusts as high as 25 mph.

Wednesday Night

A slight chance of showers and thunderstorms between 4am and 5am. Partly cloudy, with a low around 76. South southwest wind 13 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

Thursday

A slight chance of showers and thunderstorms between 7am and 1pm. Mostly sunny, with a high near 91. South southwest wind 11 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

Thursday Night

A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 75. South wind around 11 mph, with gusts as high as 21 mph.

Friday

A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.

Friday Night

A 30 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 73.

Independence Day

A 30 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 88.

Saturday Night

A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70.

Sunday

Partly sunny, with a high near 86.

Sunday Night

A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69.