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

Denison (KDNS)

Lat: 41.98°NLon: 95.38°WElev: 1273ft.

N/A

Humidity	NA
Wind Speed	NA
Barometer	NA
Dewpoint	N/A
Visibility	NA
Last update	* Not a current observation *

More Information:

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

Extended Forecast for

Arion IA

Extreme Heat Warning June 30, 07:49am until June 30, 09:00pm

Click here for hazard details and duration

Extreme Heat Warning

Extreme Heat Warning June 30, 07:49am until June 30, 09:00pm
NOW until 9:00pm Tue
Extreme Heat Warning
Today
High: 94 °F
Sunny and
Breezy then
Mostly Sunny
Tonight
Low: 74 °F
Chance
T-storms then
Chance
Showers
Wednesday
High: 91 °F
Chance
Showers and
Breezy
Wednesday Night
Low: 72 °F
Chance
T-storms then
Chance
Showers
Thursday
High: 90 °F
Chance
T-storms
Thursday Night
Low: 72 °F
Showers
Likely
Friday
High: 93 °F
Mostly Sunny
Friday Night
Low: 72 °F
Chance
T-storms

Detailed Forecast

Today

Mostly sunny, with a high near 94. Heat index values as high as 101. Breezy, with a south southwest wind 7 to 16 mph, with gusts as high as 23 mph.

Tonight

A 30 percent chance of showers and thunderstorms, mainly after 4am. Mostly cloudy, with a low around 74. South wind 7 to 9 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Wednesday

A chance of showers and thunderstorms before noon, then a chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 91. Breezy, with a south wind 11 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Wednesday Night

A 50 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 72. South southwest wind 5 to 13 mph, with gusts as high as 23 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Thursday

A 40 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 90. Light south wind increasing to 5 to 9 mph in the morning. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Thursday Night

Showers likely and possibly a thunderstorm. Partly cloudy, with a low around 72. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Friday

Mostly sunny, with a high near 93.

Friday Night

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

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 30 percent chance of showers. Partly sunny, with a high near 87.

Sunday Night

A 30 percent chance of showers. Partly cloudy, with a low around 66.