My Profile
  1. Member Settings
  2. My Devices
  3. Sign Out
Log In
    Favorites
        More Settings
      Elev 174 ft, 38.989 °N 76.868 °W

      Greenbelt, MD

      Hynesboro Station68°
      Updated: 5:24 AM EDT on September 17, 2026 (GMT -4)
      8 minutes ago
      89°
      67°
      68
      Feels Like 68
      Partly 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 09/17
        High 89°f
         33% Precip. / 0.04 in
        Partly cloudy skies during the morning giving way to a few showers late. High 89F. Winds SSW at 5 to 10 mph. Chance of rain 30%.
        Tonight
        Thu 09/17
        Low 69°f
         62% Precip. / 0.11 in
        Partly to mostly cloudy skies with scattered thunderstorms during the evening. Low 69F. Winds light and variable. Chance of rain 60%.
        Tomorrow
        Fri 09/18
        High 86°f63°f
         20% Precip. / 0 in
        Sunshine and clouds mixed. Slight chance of a rain shower. High 86F. Winds N at 5 to 10 mph.
        Hourly Forecast
        Now
        69°
        6AM
        69°
        6:50AM
        Sunrise
        7AM
        68°
        8AM
        71°
        9AM
        73°
        10AM
        77°
        11AM
        81°
        12PM
        85°
        1PM
        86°
        2PM
        84°
        3PM
        86°
        4PM
        34%
        88°
        5PM
        86°
        6PM
        84°
        7PM
        47%
        82°
        7:12PM
        Sunset
        8PM
        62%
        79°
        9PM
        47%
        77°
        10PM
        75°
        11PM
        74°
        12AM
        73°
        1AM
        73°
        2AM
        73°
        3AM
        73°
        4AM
        73°
        5AM
        72°
        Precipitation
        62%
        Pollen
        Ragweed Pollen
        High
        Air Quality
        31
        Good
        UV Index
        0
        Low
        Additional Conditions
        1. Pressure 30.24 in
        2. Visibility 10 miles
        3. Clouds Partly Cloudy
        4. Dew Point66°F
        5. Humidity 88%
        6. Rainfall 0 in
        7. Snow Depth 0 in
         KCGS Station History
        Almanac for September 17, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 89°F 79°F 94°F 1991
        4. Low 67°F 57°F 36°F 1986
        5. Rain/Snow Depth
        6. Precipitation 0.15 in - in -
        7. Snow 0 in - in -
        Almanac for September 18, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 86°F 79°F 93°F
        4. Low 67°F 57°F 34°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:50 AM 7:12 PM
        3. Civil Twilight 6:24 AM 7:39 PM
        4. Nautical Twilight 5:52 AM 8:10PM
        5. Astronomical Twilight 5:20 AM 8:42 PM
        1. Length of Visible Light 13h 15m
        2. Length of Day 12h 21m
        3. Tomorrow will be 2 minutes 31 seconds shorter
        1. Moon 1:41 PM 10:39 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
        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