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      Elev 114 ft, 38.960 °N 77.382 °W

      Herndon, VA

      Summary

      Temperature (°F) Actual Historic Avg. Record
      High Temp788095
      Low Temp625937
      Day Average Temp73.44--
      Precipitation (in) Actual Historic Avg. Record
      Precipitation03.3-
      Dew Point (°F) Actual Historic Avg. Record
      Dew Point56.72--
      High70--
      Low48--
      Average56.72--
      Wind (mph) Actual Historic Avg. Record
      Max Wind Speed16--
      Visibility10--
      Sea Level Pressure (in) Actual Historic Avg. Record
      Sea Level Pressure29.76--
      Astronomy Day Length Rise Set
      Actual Time12h 29m6:50 AM7:19 PM
      Civil Twilight6:23 AM7:46 PM
      Nautical Twilight5:51 AM8:17 PM
      Astronomical Twilight5:19 AM8:49 PM
      Moon: Waxing crescent10:35 AM8:48 PM

      Daily Observations

      TimeTemperatureDew PointHumidityWindWind SpeedWind GustPressurePrecip.Condition
      12:52 AM 77 °F 69 °F 76 % SW 3 mph - 29.57 in 0 in Mostly Cloudy
      1:52 AM 73 °F 70 °F 90 % CALM 0 mph - 29.59 in 0 in Mostly Cloudy
      2:52 AM 71 °F 68 °F 90 % CALM 0 mph - 29.59 in 0 in Partly Cloudy
      3:52 AM 75 °F 66 °F 73 % NW 8 mph - 29.6 in 0 in Partly Cloudy
      4:52 AM 75 °F 65 °F 71 % NNW 10 mph 22 mph 29.62 in 0 in Fair
      5:52 AM 75 °F 65 °F 71 % NNW 8 mph - 29.65 in 0 in Mostly Cloudy
      6:52 AM 74 °F 62 °F 66 % NNW 8 mph - 29.68 in 0 in Mostly Cloudy
      7:52 AM 73 °F 63 °F 71 % NNW 13 mph 20 mph 29.72 in 0 in Mostly Cloudy
      8:15 AM 74 °F 60 °F 62 % NNW 14 mph 22 mph 29.73 in 0 in Mostly Cloudy
      8:52 AM 73 °F 59 °F 61 % NNW 13 mph 22 mph 29.75 in 0 in Mostly Cloudy
      9:52 AM 76 °F 57 °F 52 % N 15 mph 23 mph 29.78 in 0 in Partly Cloudy
      10:52 AM 75 °F 57 °F 53 % N 16 mph 25 mph 29.8 in 0 in Partly Cloudy
      11:52 AM 76 °F 56 °F 50 % NNW 14 mph 23 mph 29.8 in 0 in Partly Cloudy
      12:52 PM 77 °F 53 °F 43 % NNW 14 mph 25 mph 29.8 in 0 in Partly Cloudy
      1:52 PM 77 °F 52 °F 42 % NW 14 mph 20 mph 29.8 in 0 in Partly Cloudy
      2:52 PM 78 °F 50 °F 37 % NNW 12 mph - 29.8 in 0 in Partly Cloudy
      3:52 PM 78 °F 51 °F 39 % N 10 mph 21 mph 29.8 in 0 in Fair
      4:52 PM 78 °F 50 °F 37 % N 9 mph 21 mph 29.8 in 0 in Fair
      5:52 PM 76 °F 49 °F 38 % NNE 13 mph 18 mph 29.81 in 0 in Fair
      6:52 PM 74 °F 48 °F 40 % N 13 mph 20 mph 29.83 in 0 in Fair
      7:52 PM 71 °F 48 °F 44 % NNE 8 mph - 29.85 in 0 in Fair
      8:52 PM 69 °F 49 °F 49 % NNE 10 mph - 29.88 in 0 in Fair
      9:52 PM 66 °F 51 °F 59 % NE 7 mph - 29.9 in 0 in Fair
      10:52 PM 63 °F 50 °F 63 % NE 6 mph - 29.92 in 0 in Fair
      11:52 PM 62 °F 50 °F 65 % NE 5 mph - 29.92 in 0 in Fair
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