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      Heat Advisory
      until 8:00 PM CDT
      Elev 515 ft, 38.654 °N 90.348 °W

      Clayton, MO

      Clayton Station85°
      Updated: 11:59 PM CDT on September 15, 2026 (GMT -5)
      3 minutes ago
      98°
      72°
      85
      Feels Like 92
      Clear
      N
      3
      Lower 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
        Wed 09/16
        Low 75°f
         9% Precip. / 0 in
        A few clouds. Low around 75F. Winds light and variable.
        Tomorrow
        Thu 09/17
        High 94°f
         22% Precip. / 0 in
        Partly cloudy skies. Hot. High 94F. Winds SSW at 5 to 10 mph.
        Tomorrow night
        Thu 09/17
        Low 75°f
         8% Precip. / 0 in
        A few clouds from time to time. Low around 75F. Winds light and variable.
        Hourly Forecast
        Now
        79°
        12AM
        79°
        1AM
        79°
        2AM
        78°
        3AM
        79°
        4AM
        78°
        5AM
        77°
        6AM
        76°
        6:44AM
        Sunrise
        7AM
        76°
        8AM
        78°
        9AM
        81°
        10AM
        83°
        11AM
        86°
        12PM
        88°
        1PM
        90°
        2PM
        91°
        3PM
        92°
        4PM
        92°
        5PM
        90°
        6PM
        89°
        7PM
        86°
        7:07PM
        Sunset
        8PM
        84°
        9PM
        82°
        10PM
        81°
        11PM
        80°
        Precipitation
        22%
        Pollen
        Ragweed Pollen
        High
        Air Quality
        49
        Good
        UV Index
        0
        Low
        Additional Conditions
        1. Pressure 30.08 in
        2. Visibility 10 miles
        3. Clouds Partly Cloudy
        4. Dew Point72°F
        5. Humidity 79%
        6. Rainfall 0 in
        7. Snow Depth 0 in
         KSTL Station History
        Almanac for September 16, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 98°F 82°F 91°F 2017
        4. Low 72°F 62°F 52°F 1999
        5. Rain/Snow Depth
        6. Precipitation 0 in - in -
        7. Snow 0 in - in -
        Almanac for September 17, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 94°F 81°F 93°F
        4. Low 72°F 61°F 49°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:43 AM 7:07 PM
        3. Civil Twilight 6:17 AM 7:34 PM
        4. Nautical Twilight 5:45 AM 8:05PM
        5. Astronomical Twilight 5:13 AM 8:37 PM
        1. Length of Visible Light 13h 17m
        2. Length of Day 12h 23m
        3. Tomorrow will be 2 minutes 28 seconds shorter
        1. Moon 12:36 PM 9:52 PM
        2. Waxing Crescent30% 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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