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      Small Craft Advisory
      until 8:00 PM EDT
      Elev 114 ft, 38.960 °N 77.382 °W

      Herndon, VA

      Herndon Station

      Summary

      Temperature (°F) Actual Historic Avg. Record
      High Temp7687100
      Low Temp756546
      Day Average Temp75.8--
      Precipitation (in) Actual Historic Avg. Record
      Precipitation04.2-
      Dew Point (°F) Actual Historic Avg. Record
      Dew Point68.6--
      High70--
      Low66--
      Average68.6--
      Wind (mph) Actual Historic Avg. Record
      Max Wind Speed6--
      Visibility10--
      Sea Level Pressure (in) Actual Historic Avg. Record
      Sea Level Pressure29.77--
      Astronomy Day Length Rise Set
      Actual Time13h 38m6:24 AM8:02 PM
      Civil Twilight5:55 AM8:31 PM
      Nautical Twilight5:21 AM9:05 PM
      Astronomical Twilight4:44 AM9:41 PM
      Moon: Waxing crescent10:42 AM9:55 PM

      Daily Observations

      TimeTemperatureDew PointHumidityWindWind SpeedWind GustPressurePrecip.Condition
      12:52 AM 76 °F 66 °F 71 % S 5 mph - 29.8 in 0 in Mostly Cloudy
      1:52 AM 76 °F 68 °F 76 % SSE 5 mph - 29.78 in 0 in Cloudy
      2:52 AM 76 °F 69 °F 79 % SSE 5 mph - 29.77 in 0 in Cloudy
      3:52 AM 76 °F 70 °F 82 % SSE 6 mph - 29.76 in 0 in Cloudy
      4:52 AM 75 °F 70 °F 84 % S 5 mph - 29.75 in 0 in Cloudy
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