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      Elev 620 ft, 39.266 °N 77.189 °W

      Gaithersburg, MD

      Cedar Ridge Station68°
      Updated: 9:38 AM EDT on September 20, 2026 (GMT -4)
      27 seconds ago
      78°
      67°
      68
      Feels Like 68
      Cloudy
      N
      7
      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
        Sun 09/20
        High 78°f
         33% Precip. / 0.02 in
        Cloudy early with isolated thunderstorms developing this afternoon. High 78F. Winds SW at 5 to 10 mph. Chance of rain 30%.
        Tonight
        Sun 09/20
        Low 62°f
         36% Precip. / 0.02 in
        Partly cloudy this evening followed by increasing clouds with showers developing after midnight. Low 62F. Winds light and variable. Chance of rain 40%.
        Tomorrow
        Mon 09/21
        High 67°f57°f
         50% Precip. / 0.05 in
        Cloudy skies early. A few showers developing later in the day. High 67F. Winds NE at 5 to 10 mph. Chance of rain 50%.
        Hourly Forecast
        Now
        68°
        10AM
        69°
        11AM
        72°
        12PM
        74°
        1PM
        77°
        2PM
        32%
        77°
        3PM
        76°
        4PM
        30%
        76°
        5PM
        33%
        76°
        6PM
        76°
        7PM
        73°
        7:09PM
        Sunset
        8PM
        71°
        9PM
        70°
        10PM
        69°
        11PM
        69°
        12AM
        68°
        1AM
        37%
        68°
        2AM
        34%
        68°
        3AM
        67°
        4AM
        66°
        5AM
        65°
        6AM
        64°
        6:55AM
        Sunrise
        7AM
        63°
        8AM
        63°
        9AM
        64°
        Precipitation
        37%
        Thunderstorms possible after 2 PM
        Pollen
        Ragweed Pollen
        High
        Air Quality
        37
        Good
        UV Index
        0
        Low
        Additional Conditions
        1. Pressure 29.98 in
        2. Visibility 9 miles
        3. Clouds Cloudy
        4. Dew Point68°F
        5. Humidity 100%
        6. Rainfall 0.37 in
        7. Snow Depth 0 in
         KGAI Station History
        Almanac for September 20, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 78°F 77°F 91°F 1940
        4. Low 67°F 55°F 37°F 1920
        5. Rain/Snow Depth
        6. Precipitation 0.04 in 0.14 in -
        7. Snow 0 in - in -
        Almanac for September 21, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 69°F 76°F 95°F
        4. Low 67°F 55°F 32°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:54 AM 7:08 PM
        3. Civil Twilight 6:27 AM 7:35 PM
        4. Nautical Twilight 5:56 AM 8:06PM
        5. Astronomical Twilight 5:24 AM 8:38 PM
        1. Length of Visible Light 13h 7m
        2. Length of Day 12h 14m
        3. Tomorrow will be 2 minutes 33 seconds shorter
        1. Moon 4:07 PM 12:26 AM
        2. Waxing Gibbous68% of the Moon is Illuminated
        Sep 26
        Full Moon
        Oct 3
        Waning Half Last Qtr
        Oct 10
        New Moon
        Oct 18
        Waxing Half First Qtr
        Precipitation
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