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

Heat Builds in the West; Extremely Critical Fire Weather in the Northwest

A heat wave over the Southwest will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Critical to extremely critical fire weather conditions are forecast from the Northwest and the northern Great Basin this weekend. Particularly Dangerous Situation Red Flag Warnings have been issued. Read More >

Current conditions at

Denison (KDNS)

Lat: 41.98°NLon: 95.38°WElev: 1273ft.

Fair

81°F

27°C

Humidity 54%
Wind Speed Vrbl 5 mph
Barometer 30.00 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 2 Aug 11:55 am CDT
Extended Forecast for

Mapleton IA

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 89. Calm wind becoming southeast around 5 mph.

    High: 89 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 64. Southeast wind around 6 mph.

    Low: 64 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 90. South wind 7 to 14 mph, with gusts as high as 24 mph.

    High: 90 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A slight chance of showers and thunderstorms between 4am and 5am. Partly cloudy, with a low around 68. South southeast wind 6 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    Low: 68 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Tuesday

    Tuesday: A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 78. Southwest wind 5 to 8 mph becoming north northeast in the afternoon. Winds could gust as high as 16 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 78 °F

    Chance
    Showers then
    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 58. North northeast wind 5 to 8 mph becoming calm in the evening. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 58 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A chance of showers and thunderstorms. Partly sunny, with a high near 75. Calm wind becoming east northeast around 6 mph in the morning. Chance of precipitation is 50%.

    High: 75 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 55. East northeast wind around 5 mph becoming calm in the evening.

    Low: 55 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 80. Calm wind becoming south around 5 mph in the afternoon.

    High: 80 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 89. Calm wind becoming southeast around 5 mph.
Tonight
Partly cloudy, with a low around 64. Southeast wind around 6 mph.
Monday
Mostly sunny, with a high near 90. South wind 7 to 14 mph, with gusts as high as 24 mph.
Monday Night
A slight chance of showers and thunderstorms between 4am and 5am. Partly cloudy, with a low around 68. South southeast wind 6 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Tuesday
A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 78. Southwest wind 5 to 8 mph becoming north northeast in the afternoon. Winds could gust as high as 16 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 58. North northeast wind 5 to 8 mph becoming calm in the evening. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 75. Calm wind becoming east northeast around 6 mph in the morning. Chance of precipitation is 50%.
Wednesday Night
Partly cloudy, with a low around 55. East northeast wind around 5 mph becoming calm in the evening.
Thursday
Mostly sunny, with a high near 80. Calm wind becoming south around 5 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 59. South wind around 5 mph becoming calm in the evening.
Friday
Sunny, with a high near 84. Calm wind becoming south southwest 5 to 7 mph in the afternoon.
Friday Night
Mostly clear, with a low around 65. South wind 3 to 7 mph.
Saturday
Sunny, with a high near 87. Light south wind increasing to 5 to 9 mph in the morning. Winds could gust as high as 17 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mapleton IA
 42.16°N 95.79°W (Elev. 1112 ft)
Last Update:
11:26 am CDT Aug 2, 2026
Forecast Valid:
12pm CDT Aug 2, 2026-6pm CDT Aug 8, 2026
 
Forecast Discussion
 
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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