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      Elev 114 ft, 38.960 °N 77.382 °W

      Herndon, VA

      Summary

      Temperature (°F) Actual Historic Avg. Record
      High Temp707087
      Low Temp504831
      Day Average Temp60.05--
      Precipitation (in) Actual Historic Avg. Record
      Precipitation03.3-
      Dew Point (°F) Actual Historic Avg. Record
      Dew Point49.53--
      High52--
      Low48--
      Average49.53--
      Wind (mph) Actual Historic Avg. Record
      Max Wind Speed9--
      Visibility10--
      Sea Level Pressure (in) Actual Historic Avg. Record
      Sea Level Pressure30.01--
      Astronomy Day Length Rise Set
      Actual Time11h 24m7:14 AM6:38 PM
      Civil Twilight6:47 AM7:04 PM
      Nautical Twilight6:16 AM7:35 PM
      Astronomical Twilight5:45 AM8:06 PM
      Moon: New7:13 AM6:22 PM

      Daily Observations

      TimeTemperatureDew PointHumidityWindWind SpeedWind GustPressurePrecip.Condition
      12:52 AM 53 °F 49 °F 86 % CALM 0 mph - 29.95 in 0 in Mostly Cloudy
      1:52 AM 51 °F 49 °F 92 % CALM 0 mph - 29.97 in 0 in Mostly Cloudy
      2:52 AM 51 °F 48 °F 89 % CALM 0 mph - 29.96 in 0 in Partly Cloudy
      3:52 AM 50 °F 48 °F 93 % CALM 0 mph - 29.95 in 0 in Mostly Cloudy
      4:52 AM 51 °F 49 °F 92 % NW 3 mph - 29.96 in 0 in Partly Cloudy
      5:52 AM 52 °F 49 °F 89 % CALM 0 mph - 29.98 in 0 in Mostly Cloudy
      6:52 AM 52 °F 49 °F 89 % NNW 6 mph - 30.02 in 0 in Mostly Cloudy
      7:52 AM 53 °F 49 °F 86 % NNW 5 mph - 30.04 in 0 in Cloudy
      8:52 AM 56 °F 51 °F 84 % NNE 6 mph - 30.04 in 0 in Cloudy
      9:52 AM 59 °F 49 °F 69 % CALM 0 mph - 30.06 in 0 in Cloudy
      10:52 AM 64 °F 51 °F 63 % CALM 0 mph - 30.08 in 0 in Cloudy
      11:52 AM 69 °F 52 °F 54 % E 6 mph - 30.07 in 0 in Mostly Cloudy
      12:52 PM 70 °F 50 °F 49 % E 7 mph - 30.06 in 0 in Cloudy
      1:52 PM 69 °F 50 °F 51 % E 7 mph - 30.04 in 0 in Cloudy
      2:52 PM 70 °F 49 °F 47 % E 6 mph - 30.02 in 0 in Cloudy
      3:52 PM 69 °F 48 °F 47 % E 5 mph - 30.02 in 0 in Mostly Cloudy
      4:52 PM 69 °F 49 °F 49 % E 9 mph - 30 in 0 in Mostly Cloudy
      5:52 PM 67 °F 51 °F 57 % E 9 mph - 29.99 in 0 in Mostly Cloudy
      6:52 PM 66 °F 51 °F 59 % E 7 mph - 29.99 in 0 in Mostly Cloudy
      Level Access
      Glossary