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      Elev 545 ft, 39.139 °N 77.185 °W

      Gaithersburg, MD

      Gaithersburg Station73°
      Updated: 7:25 AM EDT on September 10, 2026 (GMT -4)
      4 minutes ago
      87°
      70°
      73
      Feels Like 74
      Mostly Cloudy
      N
      1
      Similar 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
        Thu 09/10
        High 87°f
         15% Precip. / 0 in
        Cloudy skies early, then partly cloudy this afternoon. A stray shower or thunderstorm is possible. High 87F. Winds W at 5 to 10 mph.
        Tonight
        Thu 09/10
        Low 69°f
         30% Precip. / 0.05 in
        Cloudy skies with a few showers after midnight. Low 69F. Winds light and variable. Chance of rain 30%.
        Tomorrow
        Fri 09/11
        High 83°f67°f
         24% Precip. / 0 in
        Mostly cloudy. High 83F. Winds light and variable.
        Hourly Forecast
        Now
        72°
        8AM
        72°
        9AM
        75°
        10AM
        76°
        11AM
        79°
        12PM
        81°
        1PM
        83°
        2PM
        85°
        3PM
        86°
        4PM
        86°
        5PM
        85°
        6PM
        84°
        7PM
        82°
        7:25PM
        Sunset
        8PM
        79°
        9PM
        77°
        10PM
        76°
        11PM
        32%
        75°
        12AM
        74°
        1AM
        74°
        2AM
        73°
        3AM
        72°
        4AM
        72°
        5AM
        31%
        71°
        6AM
        30%
        71°
        6:46AM
        Sunrise
        7AM
        32%
        70°
        Precipitation
        32%
        Pollen
        Ragweed Pollen
        High
        Air Quality
        46
        Good
        UV Index
        0
        Low
        Additional Conditions
        1. Pressure 29.96 in
        2. Visibility 10 miles
        3. Clouds Mostly Cloudy
        4. Dew Point66°F
        5. Humidity 82%
        6. Rainfall 0 in
        7. Snow Depth 0 in
         KGAI Station History
        Almanac for September 10, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 87°F 80°F 94°F 1964
        4. Low 70°F 62°F 36°F 1914
        5. Rain/Snow Depth
        6. Precipitation 0.05 in - in -
        7. Snow 0 in - in -
        Almanac for September 11, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 83°F 79°F 94°F
        4. Low 70°F 62°F 32°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:45 AM 7:25 PM
        3. Civil Twilight 6:18 AM 7:51 PM
        4. Nautical Twilight 5:46 AM 8:23PM
        5. Astronomical Twilight 5:13 AM 8:56 PM
        1. Length of Visible Light 13h 33m
        2. Length of Day 12h 39m
        3. Tomorrow will be 2 minutes 30 seconds shorter
        1. Moon 6:05 AM 7:07 PM
        2. New0% of the Moon is Illuminated
        Sep 10
        New Moon
        Sep 18
        Waxing Half First Qtr
        Sep 26
        Full Moon
        Oct 3
        Waning Half Last Qtr
        Precipitation
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