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

Hazardous Weather Conditions

Current conditions at

Denison (KDNS)

Lat: 41.98°NLon: 95.38°WElev: 1273ft.

Fair and Breezy

81°F

27°C

Humidity 74%
Wind Speed S 22 G 31 mph
Barometer 29.61 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 21 Jun 2:55 am CDT
Extended Forecast for

Charter Oak IA

Extreme Heat Warning June 21, 03:09am until June 22, 09:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning June 21, 03:09am until June 22, 09:00pm

    NOW until 9:00pm Sun

    Extreme Heat Warning

  • Overnight

    Low: 80 °F

    Mostly Clear
    and Windy

  • Saturday

    Saturday: Sunny and hot, with a high near 100. Heat index values as high as 107. Windy, with a south southwest wind around 23 mph, with gusts as high as 37 mph.

    High: 100 °F

    Hot and Windy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 77. Breezy, with a south wind 18 to 20 mph, with gusts as high as 32 mph.

    Low: 77 °F

    Mostly Clear
    and Breezy

  • Sunday

    Sunday: Sunny and hot, with a high near 98. Heat index values as high as 102. Windy, with a south wind 18 to 22 mph, with gusts as high as 36 mph.

    High: 98 °F

    Hot and Windy

  • Sunday Night

    Sunday Night: A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly clear, with a low around 73. Breezy, with a south wind 14 to 18 mph, with gusts as high as 30 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 73 °F

    Chance
    T-storms and
    Breezy

  • Monday

    Monday: A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 87. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 87 °F

    Slight Chance
    T-storms then
    Showers
    Likely

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm. Low around 63. Chance of precipitation is 80%.

    Low: 63 °F

    Showers
    Likely then
    T-storms

  • Tuesday

    Tuesday: Showers and possibly a thunderstorm. High near 80. Chance of precipitation is 80%.

    High: 80 °F

    Showers

Detailed Forecast

Overnight
Mostly clear, with a steady temperature around 80. Windy, with a south wind around 22 mph, with gusts as high as 36 mph.
Saturday
Sunny and hot, with a high near 100. Heat index values as high as 107. Windy, with a south southwest wind around 23 mph, with gusts as high as 37 mph.
Saturday Night
Mostly clear, with a low around 77. Breezy, with a south wind 18 to 20 mph, with gusts as high as 32 mph.
Sunday
Sunny and hot, with a high near 98. Heat index values as high as 102. Windy, with a south wind 18 to 22 mph, with gusts as high as 36 mph.
Sunday Night
A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly clear, with a low around 73. Breezy, with a south wind 14 to 18 mph, with gusts as high as 30 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday
A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 87. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday Night
Showers and possibly a thunderstorm. Low around 63. Chance of precipitation is 80%.
Tuesday
Showers and possibly a thunderstorm. High near 80. Chance of precipitation is 80%.
Tuesday Night
Showers and possibly a thunderstorm. Low around 65. Chance of precipitation is 80%.
Wednesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 83. Chance of precipitation is 70%.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 64. Chance of precipitation is 70%.
Thursday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 80.
Thursday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 63.
Friday
Partly sunny, with a high near 83.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Charter Oak IA
 42.09°N 95.59°W
Last Update:
11:01 pm CDT Jun 20, 2025
Forecast Valid:
3am CDT Jun 21, 2025-6pm CDT Jun 27, 2025
 
Forecast Discussion
 
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Additional Resources

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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