Heavy Rainfall and Severe Thunderstorms in the Midwest and Ohio Valley Tuesday

Multiple rounds of severe thunderstorms appear likely Tuesday across the Midwest and Ohio Valley, with severe wind gusts in excess of 75 mph as the primary threat. Heavy to excessive rainfall may lead to considerable flash and urban flooding impacts Tuesday across portions of the Ohio Valley. A Moderate Risk (level 3 of 4) of excessive rainfall has been issued. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Denison (KDNS)

Lat: 41.98°NLon: 95.38°WElev: 1273ft.

Mostly Cloudy

77°F

25°C

Humidity	94%
Wind Speed	SE 6 mph
Barometer	29.82 in
Dewpoint	75°F (24°C)
Visibility	10.00 mi
Heat Index	78°F (26°C)
Last update	11 Aug 3:55 am CDT

More Information:

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

Extended Forecast for

Denison IA

Overnight
Low: 73 °F
Chance
T-storms
Tuesday
High: 90 °F
Slight Chance
T-storms then
Mostly Sunny
Tuesday Night
Low: 68 °F
Partly Cloudy
then Slight
Chance
T-storms
Wednesday
High: 87 °F
Partly Sunny
Wednesday Night
Low: 66 °F
Chance
T-storms then
Showers
Likely
Thursday
High: 78 °F
Showers
Likely
Thursday Night
Low: 63 °F
Chance
T-storms then
Showers
Likely
Friday
High: 77 °F
Showers
Likely
Friday Night
Low: 65 °F
Chance
T-storms then
Showers
Likely

Detailed Forecast

Overnight

A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a steady temperature around 73. East northeast wind around 6 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tuesday

A 20 percent chance of showers and thunderstorms before 9am. Mostly sunny, with a high near 90. Calm wind becoming east around 5 mph.

Tuesday Night

A 20 percent chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 68. East wind 3 to 5 mph.

Wednesday

Partly sunny, with a high near 87. East northeast wind 5 to 7 mph.

Wednesday Night

A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 66. East northeast wind 3 to 7 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.

Thursday

Showers likely and possibly a thunderstorm before 1pm, then a slight chance of showers and thunderstorms after 1pm. Cloudy, with a high near 78. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

Thursday Night

A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 63. Chance of precipitation is 70%.

Friday

Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Cloudy, with a high near 77. Chance of precipitation is 60%.

Friday Night

A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.

Saturday

A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 80. Chance of precipitation is 30%.

Saturday Night

A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64.

Sunday

Mostly cloudy, with a high near 77.

Sunday Night

Partly cloudy, with a low around 60.

Monday

Partly sunny, with a high near 75.