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      Elev 174 ft, 38.989 °N 76.868 °W

      Greenbelt, MD

      Hynesboro Station69°
      Updated: 4:36 AM EDT on September 17, 2026 (GMT -4)
      10 minutes ago
      87°
      66°
      69
      Feels Like 69
      Cloudy
      N
      0
      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
        Thu 09/17
        High 87°f
         44% Precip. / 0.03 in
        Partly cloudy skies this morning will give way to occasional showers during the afternoon. High 87F. Winds SSW at 5 to 10 mph. Chance of rain 40%.
        Tonight
        Thu 09/17
        Low 69°f
         62% Precip. / 0.13 in
        Thunderstorms this evening, then skies turning partly cloudy after midnight. Low 69F. Winds light and variable. Chance of rain 60%.
        Tomorrow
        Fri 09/18
        High 86°f62°f
         15% Precip. / 0 in
        Partly to mostly cloudy. Slight chance of a rain shower. High 86F. Winds N at 5 to 10 mph.
        Hourly Forecast
        Now
        70°
        5AM
        69°
        6AM
        69°
        6:50AM
        Sunrise
        7AM
        68°
        8AM
        69°
        9AM
        73°
        10AM
        77°
        11AM
        81°
        12PM
        84°
        1PM
        86°
        2PM
        84°
        3PM
        85°
        4PM
        87°
        5PM
        86°
        6PM
        44%
        83°
        7PM
        82°
        7:12PM
        Sunset
        8PM
        37%
        79°
        9PM
        62%
        76°
        10PM
        52%
        74°
        11PM
        73°
        12AM
        72°
        1AM
        72°
        2AM
        72°
        3AM
        72°
        4AM
        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 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 87°F 79°F 94°F 1991
        4. Low 66°F 57°F 36°F 1986
        5. Rain/Snow Depth
        6. Precipitation 0.16 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 66°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
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