My Profile
  1. Member Settings
  2. My Devices
  3. Sign Out
Log In
    Favorites
        More Settings
      Elev 477 ft, 39.163 °N 77.177 °W

      Gaithersburg, MD

      Montgomery County Airpark Station64°
      Updated: 5:56 PM EDT on September 21, 2026 (GMT -4)
      4 minutes ago
      72°
      61°
      64
      Feels Like 64
      Showers in Vicinity
      N
      3
      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
        Mon 09/21
        Low 58°f
         88% Precip. / 0.26 in
        Showers this evening becoming a steady rain overnight. Low 58F. Winds ENE at 5 to 10 mph. Chance of rain 90%. Rainfall near a quarter of an inch.
        Tomorrow
        Tue 09/22
        High 60°f
         93% Precip. / 0.48 in
        Rain likely. High around 60F. Winds ENE at 10 to 15 mph. Chance of rain 90%. Rainfall near a half an inch.
        Tomorrow night
        Tue 09/22
        Low 52°f
         75% Precip. / 0.28 in
        Periods of rain. Low 52F. Winds NE at 10 to 15 mph. Chance of rain 80%. Rainfall around a quarter of an inch.
        Hourly Forecast
        Now
        64°
        6PM
        57%
        65°
        7PM
        64°
        7:07PM
        Sunset
        8PM
        62°
        9PM
        63°
        10PM
        63°
        11PM
        62°
        12AM
        62°
        1AM
        47%
        62°
        2AM
        56%
        62°
        3AM
        77%
        62°
        4AM
        88%
        62°
        5AM
        77%
        62°
        6AM
        57%
        61°
        6:56AM
        Sunrise
        7AM
        62%
        60°
        8AM
        72%
        59°
        9AM
        65%
        59°
        10AM
        84%
        59°
        11AM
        85%
        60°
        12PM
        88%
        59°
        1PM
        93%
        59°
        2PM
        81%
        59°
        3PM
        83%
        59°
        4PM
        66%
        59°
        5PM
        84%
        59°
        Precipitation
        93%
        Rain ending around 6:30 PM
        Pollen
        Ragweed Pollen
        Moderate
        Air Quality
        17
        Good
        UV Index
        0
        Low
        Additional Conditions
        1. Pressure 30.04 in
        2. Visibility 6 miles
        3. Clouds Cloudy
        4. Dew Point64°F
        5. Humidity 100%
        6. Rainfall 0.52 in
        7. Snow Depth 0 in
         KGAI Station History
        Almanac for September 21, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 72°F 76°F 91°F 1965
        4. Low 61°F 58°F 37°F 1962
        5. Rain/Snow Depth
        6. Precipitation 0.26 in - in -
        7. Snow 0 in - in -
        Almanac for September 22, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 63°F 75°F 95°F
        4. Low 61°F 58°F 38°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:55 AM 7:07 PM
        3. Civil Twilight 6:28 AM 7:33 PM
        4. Nautical Twilight 5:57 AM 8:05PM
        5. Astronomical Twilight 5:25 AM 8:36 PM
        1. Length of Visible Light 13h 5m
        2. Length of Day 12h 11m
        3. Tomorrow will be 2 minutes 32 seconds shorter
        1. Moon 4:42 PM 1:27 AM
        2. Waxing Gibbous77% 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
        Loading…
        Health
        Loading…
        Weather Alerts
        Loading…
        Our AppsAbout UsContactCareersWeather Data APIs
        PWS NetworkWundermap
        Terms of UsePrivacy PolicyCookie NoticeAccessibility StatementAdChoicesData Vendors
        essentialaccessibility.com
        We recognize our responsibility to use data and technology for good. We may use or share your data with our data vendors. Take control of your data.
        Review All Privacy and Ad Settings
        Choose how my information is shared
        Data Rights
        The Weather Company The Weather Channel Weather Underground Storm Radar
        © The Weather Company, LLC 2026
        Glossary