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      Heat Advisory
      until 8:00 PM CDT
      Elev 541 ft, 38.610 °N 90.230 °W

      St. Louis, MO

      Compton Heights Station78°
      Updated: 4:00 AM CDT on September 17, 2026 (GMT -5)
      4 minutes ago
      97°
      75°
      78
      Feels Like 79
      Clear
      N
      1
      Same 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
        Today
        Fri 09/18
        High 97°f
         47% Precip. / 0.1 in
        Partly cloudy with afternoon showers or thunderstorms. High 97F. Winds WSW at 5 to 10 mph. Chance of rain 50%.
        Tonight
        Fri 09/18
        Low 74°f
         15% Precip. / 0 in
        A stray shower or thunderstorm is possible early. A few clouds. Low 74F. Winds light and variable.
        Tomorrow
        Sat 09/19
        High 95°f74°f
         24% Precip. / 0 in
        Sunshine and clouds mixed. Hot. High around 95F. Winds light and variable.
        Hourly Forecast
        Now
        77°
        5AM
        76°
        6AM
        76°
        6:44AM
        Sunrise
        7AM
        76°
        8AM
        79°
        9AM
        83°
        10AM
        87°
        11AM
        89°
        12PM
        91°
        1PM
        94°
        2PM
        95°
        3PM
        47%
        96°
        4PM
        42%
        94°
        5PM
        93°
        6PM
        91°
        7PM
        89°
        7:05PM
        Sunset
        8PM
        86°
        9PM
        84°
        10PM
        82°
        11PM
        81°
        12AM
        80°
        1AM
        79°
        2AM
        78°
        3AM
        77°
        4AM
        76°
        Precipitation
        47%
        Pollen
        Ragweed Pollen
        High
        Air Quality
        58
        Moderate
        UV Index
        0
        Low
        Additional Conditions
        1. Pressure 30.19 in
        2. Visibility 8 miles
        3. Clouds Clear
        4. Dew Point71°F
        5. Humidity 83%
        6. Rainfall 0 in
        7. Snow Depth 0 in
         KCPS Station History
        Almanac for September 17, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 97°F 80°F 94°F 1988
        4. Low 75°F 58°F 42°F 1979
        5. Rain/Snow Depth
        6. Precipitation 0.1 in 3.2 in -
        7. Snow 0 in 0 in -
        Almanac for September 18, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 95°F 80°F 93°F
        4. Low 75°F 58°F 43°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:44 AM 7:05 PM
        3. Civil Twilight 6:17 AM 7:32 PM
        4. Nautical Twilight 5:46 AM 8:03PM
        5. Astronomical Twilight 5:14 AM 8:35 PM
        1. Length of Visible Light 13h 14m
        2. Length of Day 12h 21m
        3. Tomorrow will be 2 minutes 28 seconds shorter
        1. Moon 1:35 PM 10:35 PM
        2. Waxing Crescent39% 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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