National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Areas of Dangerous Heat and Heavy Rain with Possible Flooding into this Weekend

Hot temperatures and high humidity are forecast to continue across much of northeast Texas into the mid-Mississippi Valley into this weekend with heat advisories in effect. Heavy to excessive rainfall occurring at times through Saturday could bring areas of flooding across parts of the central Plains into the upper Midwest/Great Lakes, and Four Corners states. Read More >

Hazardous Weather Conditions

Current conditions at

Denison (KDNS)

Lat: 41.98°NLon: 95.38°WElev: 1273ft.

Fog/Mist

64°F

18°C

Humidity 100%
Wind Speed NW 10 G 17 mph
Barometer 30.23 in
Dewpoint 64°F (18°C)
Visibility 5.00 mi
Last update 17 Sep 7:15 am CDT
Extended Forecast for

Dunlap IA

Dense Fog Advisory September 17, 07:31am until September 17, 10:00am
Click here for hazard details and duration
...
  •  
    Dense Fog Advisory September 17, 07:31am until September 17, 10:00am

    NOW until 10:00am Thu

    Dense Fog Advisory

  • Today

    High: 75 °F

    Patchy Dense
    Fog then
    Partly Sunny

  • Tonight

    Tonight: A slight chance of showers between midnight and 1am, then a chance of showers and thunderstorms after 1am. Increasing clouds, with a low around 64. Light east northeast wind becoming east southeast 5 to 10 mph in the evening. Winds could gust as high as 17 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 64 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms, mainly between 4pm and 5pm. Cloudy through mid morning, then gradual clearing, with a high near 84. Southeast wind 11 to 15 mph, with gusts as high as 24 mph.

    High: 84 °F

    Slight Chance
    T-storms

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms before 7pm, then showers likely and possibly a thunderstorm between 7pm and 1am, then a chance of showers and thunderstorms after 1am. Increasing clouds, with a low around 66. South wind 6 to 11 mph becoming light and variable after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 66 °F

    Showers
    Likely

  • Saturday

    Saturday: A 20 percent chance of showers. Mostly cloudy, with a high near 74. Northwest wind 3 to 7 mph.

    High: 74 °F

    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 58. North wind 3 to 7 mph.

    Low: 58 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Sunday

    Sunday: A 50 percent chance of showers, mainly after 1pm. Mostly cloudy, with a high near 64. Northeast wind 5 to 8 mph.

    High: 64 °F

    Slight Chance
    Showers then
    Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers. Mostly cloudy, with a low around 55. East northeast wind 3 to 7 mph.

    Low: 55 °F

    Chance
    Showers

Detailed Forecast

Today
Patchy dense fog before 10am. Otherwise, mostly cloudy, with a high near 75. Light and variable wind.
Tonight
A slight chance of showers between midnight and 1am, then a chance of showers and thunderstorms after 1am. Increasing clouds, with a low around 64. Light east northeast wind becoming east southeast 5 to 10 mph in the evening. Winds could gust as high as 17 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
A 20 percent chance of showers and thunderstorms, mainly between 4pm and 5pm. Cloudy through mid morning, then gradual clearing, with a high near 84. Southeast wind 11 to 15 mph, with gusts as high as 24 mph.
Friday Night
A slight chance of showers and thunderstorms before 7pm, then showers likely and possibly a thunderstorm between 7pm and 1am, then a chance of showers and thunderstorms after 1am. Increasing clouds, with a low around 66. South wind 6 to 11 mph becoming light and variable after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.
Saturday
A 20 percent chance of showers. Mostly cloudy, with a high near 74. Northwest wind 3 to 7 mph.
Saturday Night
A 20 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 58. North wind 3 to 7 mph.
Sunday
A 50 percent chance of showers, mainly after 1pm. Mostly cloudy, with a high near 64. Northeast wind 5 to 8 mph.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 55. East northeast wind 3 to 7 mph.
Monday
A chance of showers, mainly before 1pm. Mostly cloudy, with a high near 62. East northeast wind 3 to 7 mph.
Monday Night
Mostly cloudy, with a low around 52. East northeast wind around 6 mph becoming calm in the evening.
Tuesday
Mostly cloudy, with a high near 64. Calm wind becoming east around 6 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 52. Light east southeast wind.
Wednesday
A slight chance of showers. Partly sunny, with a high near 69. Calm wind becoming south southeast around 6 mph in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Dunlap IA
 41.85°N 95.59°W (Elev. 1194 ft)
Last Update:
7:05 am CDT Sep 17, 2026
Forecast Valid:
7am CDT Sep 17, 2026-6pm CDT Sep 23, 2026
 
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Additional Resources

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