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      Small Craft Advisory
      until 6:00 PM EDT
      Elev 112 ft, 38.992 °N 76.970 °W

      Adelphi, MD

      Cool Spring Terrace Station61°
      Updated: 12:57 AM EDT on September 27, 2026 (GMT -4)
      5 minutes ago
      67°
      63°
      61
      Feels Like 61
      Cloudy
      N
      9
      Gusts 18 mph
      Lower temperature is expected today
      Wundermap
      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
        Sat 09/26
        Low 58°f
         37% Precip. / 0 in
        Overcast with rain showers at times. Low 58F. Winds NW at 5 to 10 mph. Chance of rain 40%.
        Tomorrow
        Sun 09/27
        High 63°f
         75% Precip. / 0.17 in
        Rain showers in the morning will evolve into a more steady rain in the afternoon. High 63F. Winds NW at 10 to 20 mph. Chance of rain 80%.
        Tomorrow night
        Sun 09/27
        Low 60°f
         24% Precip. / 0 in
        Overcast. Low near 60F. Winds NW at 10 to 15 mph.
        Hourly Forecast
        Now
        61°
        1AM
        61°
        2AM
        61°
        3AM
        60°
        4AM
        59°
        5AM
        59°
        6AM
        59°
        7AM
        35%
        59°
        7:00AM
        Sunrise
        8AM
        57%
        59°
        9AM
        52%
        60°
        10AM
        55%
        61°
        11AM
        58%
        62°
        12PM
        62%
        62°
        1PM
        75%
        63°
        2PM
        60%
        62°
        3PM
        34%
        62°
        4PM
        62°
        5PM
        36%
        62°
        6PM
        30%
        62°
        6:56PM
        Sunset
        7PM
        63°
        8PM
        62°
        9PM
        61°
        10PM
        61°
        11PM
        61°
        12AM
        61°
        Precipitation
        75%
        Rain possible after 7 AM
        Pollen
        Ragweed Pollen
        High
        Air Quality
        29
        Good
        UV Index
        0
        Low
        Additional Conditions
        1. Pressure 29.81 in
        2. Visibility 10 miles
        3. Clouds Cloudy
        4. Dew Point54°F
        5. Humidity 79%
        6. Rainfall 0.46 in
        7. Snow Depth 0 in
         KCGS Station History
        Almanac for September 27, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 67°F 76°F 95°F 1986
        4. Low 63°F 55°F 34°F 1940
        5. Rain/Snow Depth
        6. Precipitation 0 in 0.13 in -
        7. Snow 0 in - in -
        Almanac for September 28, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 67°F 75°F 90°F
        4. Low 63°F 55°F 35°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 7:00 AM 6:56 PM
        3. Civil Twilight 6:33 AM 7:23 PM
        4. Nautical Twilight 6:02 AM 7:54PM
        5. Astronomical Twilight 5:31 AM 8:25 PM
        1. Length of Visible Light 12h 49m
        2. Length of Day 11h 56m
        3. Tomorrow will be 2 minutes 30 seconds shorter
        1. Moon 7:13 PM 7:59 AM
        2. Waning Gibbous97% of the Moon is Illuminated
        Oct 3
        Waning Half Last Qtr
        Oct 10
        New Moon
        Oct 18
        Waxing Half First Qtr
        Oct 26
        Full Moon
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