Heat Wave Continues in the Northeastern Quarter of the U.S.; Excessive Rain May Bring Flooding in the North Central U.S.

The heat wave is expected to peak in the eastern Great Lakes and New England today, and the Ohio Valley and Mid-Atlantic Friday into the weekend. Widespread daily record high temperatures are likely. Heavy to excessive rainfall will be associated with thunderstorms forecast to move across parts of the northern Plains and Upper Midwest today into Friday. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Denison (KDNS)

Lat: 41.98°NLon: 95.38°WElev: 1273ft.

Fog/Mist

66°F

19°C

Humidity	100%
Wind Speed	E 8 mph
Barometer	30.30 in
Dewpoint	66°F (19°C)
Visibility	4.00 mi
Last update	20 Jun 9:55 am CDT

More Information:

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

Extended Forecast for

Defiance IA

Today
High: 81 °F
Decreasing
Clouds
Tonight
Low: 67 °F
Slight Chance
T-storms
Friday
High: 88 °F
Mostly Sunny
then Chance
T-storms
Friday Night
Low: 70 °F
Chance
T-storms
Saturday
High: 88 °F
T-storms
Likely
Saturday Night
Low: 63 °F
T-storms
Likely then
Slight Chance
T-storms
Sunday
High: 86 °F
Sunny
Sunday Night
Low: 62 °F
Mostly Clear
Monday
High: 91 °F
Sunny

Detailed Forecast

Today

Cloudy, then gradually becoming mostly sunny, with a high near 81. Southeast wind around 7 mph.

Tonight

A slight chance of showers and thunderstorms between 8pm and 1am. Mostly cloudy, with a low around 67. Southeast wind around 6 mph. Chance of precipitation is 20%.

Friday

A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 88. South wind 6 to 14 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.

Friday Night

A 40 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 70. South wind 10 to 14 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.

Saturday

A chance of showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 4pm, then showers and thunderstorms likely after 4pm. Partly sunny, with a high near 88. West southwest wind 14 to 16 mph, with gusts 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.

Saturday Night

Showers and thunderstorms likely, mainly before 7pm. Mostly clear, with a low around 63. West northwest wind 5 to 8 mph becoming calm after midnight. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Sunday

Sunny, with a high near 86. North northwest wind 3 to 8 mph.

Sunday Night

Mostly clear, with a low around 62. Northwest wind around 6 mph becoming light and variable in the evening.

Monday

Sunny, with a high near 91. South wind 6 to 11 mph, with gusts as high as 20 mph.

Monday Night

A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 70. South wind 7 to 10 mph, with gusts as high as 17 mph.

Tuesday

A chance of showers and thunderstorms. Sunny, with a high near 93. South southwest wind 7 to 10 mph, with gusts as high as 18 mph.

Tuesday Night

A chance of showers and thunderstorms. Partly cloudy, with a low around 65. Northeast wind 5 to 8 mph.