National Weather Service

News Headlines

Severe Weather on June 11, 2026

Hazardous Weather Conditions

Severe Thunderstorm Watch in effect from June 13, 04:45 AM CDT until June 13, 11:00 AM CDT

Current conditions at

Denison (KDNS)

Lat: 41.98°NLon: 95.38°WElev: 1273ft.

Overcast

64°F

18°C

Humidity	100%
Wind Speed	S 6 mph
Barometer	29.92 in
Dewpoint	64°F (18°C)
Visibility	NA
Last update	13 Jun 8:35 am CDT

More Information:

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

Extended Forecast for

Mapleton IA

Severe T-storm Watch until June 13, 11:00am

Click here for hazard details and duration

...

Severe T-storm Watch until June 13, 11:00am
NOW until 11:00am Sat
Severe T-storm Watch
Today
High: 77 °F
Severe
Thunderstorms
Tonight
Low: 51 °F
Decreasing
Clouds
Sunday
High: 74 °F
Sunny
Sunday Night
Low: 48 °F
Partly Cloudy
Monday
High: 80 °F
Mostly Sunny
Monday Night
Low: 55 °F
Partly Cloudy
Tuesday
High: 81 °F
Mostly Sunny
Tuesday Night
Low: 58 °F
Partly Cloudy
then Slight
Chance
T-storms

Detailed Forecast

Today

Showers likely and possibly a thunderstorm before 10am, then a chance of showers and thunderstorms, mainly between 10am and 5pm. Some of the storms could be severe. Partly sunny, with a high near 77. Light and variable wind becoming north 8 to 13 mph in the morning. Winds could gust as high as 24 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tonight

Mostly cloudy, then gradually becoming clear, with a low around 51. North northwest wind 5 to 11 mph, with gusts as high as 22 mph.

Sunday

Sunny, with a high near 74. Northwest wind 6 to 11 mph, with gusts as high as 22 mph.

Sunday Night

Partly cloudy, with a low around 48. Northwest wind 5 to 8 mph becoming calm in the evening. Winds could gust as high as 17 mph.

Monday

Mostly sunny, with a high near 80. Calm wind becoming west northwest 5 to 8 mph in the afternoon. Winds could gust as high as 18 mph.

Monday Night

Partly cloudy, with a low around 55. South southwest wind 3 to 6 mph.

Tuesday

Mostly sunny, with a high near 81. Light west wind becoming west northwest 5 to 10 mph in the morning. Winds could gust as high as 21 mph.

Tuesday Night

A slight chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 58. West northwest wind 5 to 8 mph becoming calm. Winds could gust as high as 16 mph.

Wednesday

A chance of showers and thunderstorms. Partly sunny, with a high near 86. South southeast wind 6 to 13 mph becoming west in the afternoon. Winds could gust as high as 23 mph.

Wednesday Night

A slight chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 57. Northwest wind 6 to 15 mph, with gusts as high as 28 mph.

Thursday

Mostly sunny, with a high near 81. Northwest wind 6 to 9 mph, with gusts as high as 18 mph.

Thursday Night

Mostly clear, with a low around 56. North northwest wind 5 to 8 mph becoming calm in the evening.

Juneteenth

Mostly sunny, with a high near 86. Light south wind becoming south southwest 5 to 10 mph in the morning. Winds could gust as high as 21 mph.