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      Dense Fog Advisory
      until 10:00 AM CDT
      Elev 1112 ft, 42.265 °N 94.068 °W

      Harcourt, IA

      Dayton Station66°
      Updated: 1:34 AM CDT on September 17, 2026 (GMT -5)
      3 minutes ago
      72°
      55°
      66
      Feels Like 66
      Fog
      N
      1
      Similar temperature is expected today
      50
      50
      575
      90
      50
      7
      0 mph
      50
      50
      50
      50
      50
      50
      Radar · Now
        Hyper-local data from Weather Underground's network of
        400,000+ personal weather stations worldwide
        Tonight
        Thu 09/17
        Low 65°f
         59% Precip. / 0.15 in
        Variably cloudy with scattered thunderstorms. Areas of dense fog developing late. Low near 65F. Winds light and variable. Chance of rain 60%.
        Tomorrow
        Fri 09/18
        High 73°f
         23% Precip. / 0 in
        Cloudy. Slight chance of a rain shower. High 73F. Winds light and variable.
        Tomorrow night
        Fri 09/18
        Low 64°f
         61% Precip. / 0.1 in
        Cloudy skies early with thunderstorms developing later at night. Low 64F. Winds ENE at 5 to 10 mph. Chance of rain 60%.
        Hourly Forecast
        Now
        67°
        2AM
        59%
        67°
        3AM
        56%
        67°
        4AM
        21%
        67°
        5AM
        15%
        66°
        6AM
        15%
        66°
        6:58AM
        Sunrise
        7AM
        16%
        66°
        8AM
        66°
        9AM
        67°
        10AM
        69°
        11AM
        70°
        12PM
        71°
        1PM
        72°
        2PM
        72°
        3PM
        73°
        4PM
        72°
        5PM
        72°
        6PM
        71°
        7PM
        71°
        7:22PM
        Sunset
        8PM
        69°
        9PM
        68°
        10PM
        68°
        11PM
        67°
        12AM
        66°
        1AM
        66°
        Precipitation
        59%
        Storms continuing through 3 AM
        Pollen
        Ragweed Pollen
        Low
        Air Quality
        54
        Moderate
        UV Index
        0
        Low
        Additional Conditions
        1. Pressure 30.18 in
        2. Visibility 0.06 miles
        3. Clouds Cloudy
        4. Dew Point66°F
        5. Humidity 98%
        6. Rainfall 0.06 in
        7. Snow Depth 0 in
         KEFW Station History
        Almanac for September 17, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 72°F 76°F 96°F 1925
        4. Low 55°F 51°F 33°F 1980
        5. Rain/Snow Depth
        6. Precipitation 0.15 in 3.2 in -
        7. Snow 0 in 0 in -
        Almanac for September 18, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 73°F 75°F 95°F
        4. Low 55°F 50°F 28°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:58 AM 7:22 PM
        3. Civil Twilight 6:30 AM 7:50 PM
        4. Nautical Twilight 5:57 AM 8:23PM
        5. Astronomical Twilight 5:23 AM 8:57 PM
        1. Length of Visible Light 13h 19m
        2. Length of Day 12h 23m
        3. Tomorrow will be 2 minutes 49 seconds shorter
        1. Moon 2:07 PM 10:36 PM
        2. Waxing Crescent40% of the Moon is Illuminated
        Sep 18
        Waxing Half First Qtr
        Sep 26
        Full Moon
        Oct 3
        Waning Half Last Qtr
        Oct 10
        New Moon
        Precipitation
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