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

Record Heat for the Intermountain West and Northern Plains; Heavy Rainfall and Severe Weather Threats

Record setting heat is expected over the next several days from the Intermountain West through the northern Plains. Furthermore, fire weather concerns increase with dry and breezy conditions. Meanwhile, heavy rainfall and severe thunderstorm threats for the Ohio/Tennessee Valleys, central Appalachians and Southeast today. The threat shifts to central Gulf Coast and across central Texas this week. Read More >

Current conditions at

Denison (KDNS)

Lat: 41.98°NLon: 95.38°WElev: 1273ft.

Fair

82°F

28°C

Humidity 58%
Wind Speed S 8 mph
Barometer 30.26 in
Dewpoint 66°F (19°C)
Visibility NA
Heat Index84°F (29°C)
Last update 12 Jul 12:15 pm CDT
Extended Forecast for

Defiance IA

  • This Afternoon

    This Afternoon: Sunny, with a high near 87. Southeast wind around 6 mph.

    High: 87 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 63. South southeast wind 3 to 6 mph.

    Low: 63 °F

    Clear

  • Monday

    Monday: Patchy fog before 7am. Otherwise, sunny, with a high near 88. Calm wind becoming south 5 to 9 mph in the morning.

    High: 88 °F

    Patchy Fog
    then Sunny

  • Monday Night

    Monday Night: Clear, with a low around 65. Light south southeast wind.

    Low: 65 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 91. Light south southwest wind.

    High: 91 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 67. Calm wind.

    Low: 67 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 93. Light and variable wind.

    High: 93 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 70. Light south wind.

    Low: 70 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 94. Calm wind becoming south 5 to 9 mph in the morning. Winds could gust as high as 16 mph.

    High: 94 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 87. Southeast wind around 6 mph.
Tonight
Clear, with a low around 63. South southeast wind 3 to 6 mph.
Monday
Patchy fog before 7am. Otherwise, sunny, with a high near 88. Calm wind becoming south 5 to 9 mph in the morning.
Monday Night
Clear, with a low around 65. Light south southeast wind.
Tuesday
Sunny, with a high near 91. Light south southwest wind.
Tuesday Night
Clear, with a low around 67. Calm wind.
Wednesday
Sunny, with a high near 93. Light and variable wind.
Wednesday Night
Clear, with a low around 70. Light south wind.
Thursday
Sunny, with a high near 94. Calm wind becoming south 5 to 9 mph in the morning. Winds could gust as high as 16 mph.
Thursday Night
Mostly clear, with a low around 72. South wind around 7 mph.
Friday
Sunny, with a high near 95. South southwest wind 6 to 11 mph, with gusts as high as 18 mph.
Friday Night
Mostly clear, with a low around 74. South wind 8 to 10 mph, with gusts as high as 17 mph.
Saturday
Sunny, with a high near 94. South southwest wind 7 to 11 mph, with gusts as high as 18 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Defiance IA
 41.83°N 95.35°W (Elev. 1293 ft)
Last Update:
12:11 pm CDT Jul 12, 2026
Forecast Valid:
12pm CDT Jul 12, 2026-6pm CDT Jul 18, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation