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      Heat Advisory
      until 8:00 PM CDT
      Elev 551 ft, 38.637 °N 90.307 °W

      Clayton, MO

      Clayton Station86°
      Updated: 9:24 PM CDT on September 15, 2026 (GMT -5)
      10 minutes ago
      100°
      72°
      86
      Feels Like 96
      Partly Cloudy
      N
      7
      Lower temperature is expected tomorrow
      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 74°f
         37% Precip. / 0.01 in
        Partly cloudy this evening followed by increasing clouds with showers developing after midnight. Low 74F. Winds SSE at 5 to 10 mph. Chance of rain 40%.
        Tomorrow
        Thu 09/17
        High 93°f
         40% Precip. / 0.08 in
        Partial cloudiness early, with scattered showers and thunderstorms in the afternoon. Storms may contain strong gusty winds. High 93F. Winds light and variable. Chance of rain 40%.
        Tomorrow night
        Thu 09/17
        Low 75°f
         8% Precip. / 0 in
        A few clouds. Low around 75F. Winds light and variable.
        Hourly Forecast
        Now
        83°
        10PM
        82°
        11PM
        81°
        12AM
        80°
        1AM
        80°
        2AM
        79°
        3AM
        77°
        4AM
        77°
        5AM
        38%
        76°
        6AM
        75°
        6:44AM
        Sunrise
        7AM
        75°
        8AM
        77°
        9AM
        79°
        10AM
        82°
        11AM
        85°
        12PM
        87°
        1PM
        89°
        2PM
        91°
        3PM
        36%
        92°
        4PM
        41%
        92°
        5PM
        91°
        6PM
        90°
        7PM
        87°
        7:07PM
        Sunset
        8PM
        84°
        9PM
        83°
        Precipitation
        41%
        Pollen
        Ragweed Pollen
        High
        Air Quality
        49
        Good
        UV Index
        0
        Low
        Additional Conditions
        1. Pressure 30.06 in
        2. Visibility 9 miles
        3. Clouds Partly Cloudy
        4. Dew Point70°F
        5. Humidity 66%
        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 100°F 82°F 91°F 2017
        4. Low 72°F 62°F 52°F 1999
        5. Rain/Snow Depth
        6. Precipitation 0.01 in - in -
        7. Snow 0 in - in -
        Almanac for September 17, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 93°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 29 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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