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

Denison (KDNS)

Lat: 41.98°NLon: 95.38°WElev: 1273ft.

Mostly Cloudy

68°F

20°C

Humidity 64%
Wind Speed E 13 G 18 mph
Barometer 29.89 in
Dewpoint 55°F (13°C)
Visibility NA
Last update 21 Jun 6:55 pm CDT
Extended Forecast for

2 Miles ENE Castana IA

  • Tonight

    Tonight: Mostly cloudy, with a low around 54. East wind 5 to 10 mph becoming light east northeast after midnight.

    Low: 54 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 76. Light and variable wind.

    High: 76 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 56. East southeast wind around 5 mph becoming calm in the evening.

    Low: 56 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 77. Calm wind becoming south 5 to 8 mph in the morning. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 77 °F

    Mostly Cloudy
    then Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 4am, then a slight chance of showers. Mostly cloudy, with a low around 59. South southwest wind 5 to 7 mph becoming calm in the evening. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 59 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: Mostly sunny, with a high near 79. Light west northwest wind becoming northwest 5 to 10 mph in the morning.

    High: 79 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 56. North northwest wind 5 to 9 mph becoming calm in the evening. Winds could gust as high as 16 mph.

    Low: 56 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 78. Calm wind becoming north northwest around 5 mph in the afternoon.

    High: 78 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 59. East northeast wind around 5 mph becoming calm in the evening.

    Low: 59 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

Detailed Forecast

Tonight
Mostly cloudy, with a low around 54. East wind 5 to 10 mph becoming light east northeast after midnight.
Monday
Partly sunny, with a high near 76. Light and variable wind.
Monday Night
Partly cloudy, with a low around 56. East southeast wind around 5 mph becoming calm in the evening.
Tuesday
A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 77. Calm wind becoming south 5 to 8 mph in the morning. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
A chance of showers and thunderstorms before 4am, then a slight chance of showers. Mostly cloudy, with a low around 59. South southwest wind 5 to 7 mph becoming calm in the evening. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
Mostly sunny, with a high near 79. Light west northwest wind becoming northwest 5 to 10 mph in the morning.
Wednesday Night
Partly cloudy, with a low around 56. North northwest wind 5 to 9 mph becoming calm in the evening. Winds could gust as high as 16 mph.
Thursday
Mostly sunny, with a high near 78. Calm wind becoming north northwest around 5 mph in the afternoon.
Thursday Night
A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 59. East northeast wind around 5 mph becoming calm in the evening.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 77. Light east southeast wind becoming southeast 5 to 9 mph in the morning. Winds could gust as high as 20 mph.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 64. East southeast wind 7 to 9 mph, with gusts as high as 18 mph.
Saturday
Partly sunny, with a high near 84. South southeast wind 8 to 15 mph, with gusts as high as 28 mph.
Saturday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 70. South southeast wind 11 to 14 mph, with gusts as high as 26 mph.
Sunday
Mostly sunny, with a high near 88. South wind 10 to 16 mph, with gusts as high as 28 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ENE Castana IA
 42.09°N 95.88°W (Elev. 1119 ft)
Last Update:
7:05 pm CDT Jun 21, 2026
Forecast Valid:
7pm CDT Jun 21, 2026-6pm CDT Jun 28, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation