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.

Overcast

52°F

11°C

Humidity 88%
Wind Speed NE 3 mph
Barometer 30.13 in
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 14 Oct 10:35 pm CDT
Extended Forecast for

Defiance IA

  • Tonight

    Tonight: A chance of showers, then showers likely and possibly a thunderstorm after 4am. Cloudy, with a steady temperature around 51. East northeast wind around 5 mph becoming calm. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 51 °F

    Mostly Cloudy
    then Showers
    Likely

  • Thursday

    Thursday: Showers and possibly a thunderstorm before 2pm, then showers likely. High near 57. North northeast wind 7 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 57 °F

    Showers

  • Thursday Night

    Thursday Night: A 30 percent chance of showers, mainly before 7pm. Cloudy, then gradually becoming partly cloudy, with a low around 38. Northwest wind 14 to 17 mph, with gusts as high as 31 mph. New precipitation amounts of less than a tenth of an inch possible.

    Low: 38 °F

    Chance
    Showers then
    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, then gradually becoming sunny, with a high near 52. Breezy, with a northwest wind 14 to 22 mph, with gusts as high as 36 mph.

    High: 52 °F

    Decreasing
    Clouds and
    Breezy

  • Friday Night

    Friday Night: Widespread frost, mainly after 3am. Otherwise, mostly clear, with a low around 31. North wind around 6 mph becoming calm in the evening.

    Low: 31 °F

    Mostly Clear
    then Frost

  • Saturday

    Saturday: Widespread frost, mainly before 8am. Otherwise, sunny, with a high near 59. Light south wind becoming south southwest 6 to 11 mph in the morning. Winds could gust as high as 20 mph.

    High: 59 °F

    Frost then
    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 39. South wind 9 to 11 mph, with gusts as high as 21 mph.

    Low: 39 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 65. South wind 13 to 15 mph, with gusts as high as 25 mph.

    High: 65 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 44. South wind 3 to 8 mph. Winds could gust as high as 18 mph.

    Low: 44 °F

    Partly Cloudy

Detailed Forecast

Tonight
A chance of showers, then showers likely and possibly a thunderstorm after 4am. Cloudy, with a steady temperature around 51. East northeast wind around 5 mph becoming calm. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
Showers and possibly a thunderstorm before 2pm, then showers likely. High near 57. North northeast wind 7 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Thursday Night
A 30 percent chance of showers, mainly before 7pm. Cloudy, then gradually becoming partly cloudy, with a low around 38. Northwest wind 14 to 17 mph, with gusts as high as 31 mph. New precipitation amounts of less than a tenth of an inch possible.
Friday
Mostly cloudy, then gradually becoming sunny, with a high near 52. Breezy, with a northwest wind 14 to 22 mph, with gusts as high as 36 mph.
Friday Night
Widespread frost, mainly after 3am. Otherwise, mostly clear, with a low around 31. North wind around 6 mph becoming calm in the evening.
Saturday
Widespread frost, mainly before 8am. Otherwise, sunny, with a high near 59. Light south wind becoming south southwest 6 to 11 mph in the morning. Winds could gust as high as 20 mph.
Saturday Night
Clear, with a low around 39. South wind 9 to 11 mph, with gusts as high as 21 mph.
Sunday
Sunny, with a high near 65. South wind 13 to 15 mph, with gusts as high as 25 mph.
Sunday Night
Partly cloudy, with a low around 44. South wind 3 to 8 mph. Winds could gust as high as 18 mph.
Monday
Mostly sunny, with a high near 69. South wind 3 to 6 mph.
Monday Night
Mostly clear, with a low around 46. Light south wind.
Tuesday
Sunny, with a high near 71. Light south wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 53. South wind around 9 mph, with gusts as high as 18 mph.
Wednesday
A slight chance of showers. Mostly sunny, with a high near 73. South wind 9 to 13 mph, with gusts as high as 23 mph.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Defiance IA
 41.83°N 95.35°W (Elev. 1293 ft)
Last Update:
10:35 pm CDT Oct 14, 2026
Forecast Valid:
10pm CDT Oct 14, 2026-6pm CDT Oct 21, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation