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      Elev 114 ft, 38.960 °N 77.382 °W

      Herndon, VA

      Summary

      Temperature (°F) Actual Historic Avg. Record
      High Temp888094
      Low Temp725943
      Day Average Temp77.83--
      Precipitation (in) Actual Historic Avg. Record
      Precipitation0.053.3-
      Dew Point (°F) Actual Historic Avg. Record
      Dew Point71.72--
      High73--
      Low70--
      Average71.72--
      Wind (mph) Actual Historic Avg. Record
      Max Wind Speed7--
      Visibility10--
      Sea Level Pressure (in) Actual Historic Avg. Record
      Sea Level Pressure29.58--
      Astronomy Day Length Rise Set
      Actual Time12h 31m6:49 AM7:20 PM
      Civil Twilight6:22 AM7:47 PM
      Nautical Twilight5:50 AM8:19 PM
      Astronomical Twilight5:18 AM8:51 PM
      Moon: Waxing crescent9:29 AM8:21 PM

      Daily Observations

      TimeTemperatureDew PointHumidityWindWind SpeedWind GustPressurePrecip.Condition
      12:52 AM 74 °F 71 °F 91 % CALM 0 mph - 29.64 in 0 in Cloudy
      1:52 AM 74 °F 71 °F 91 % E 3 mph - 29.64 in 0 in Cloudy
      2:52 AM 74 °F 71 °F 91 % ESE 5 mph - 29.61 in 0.01 in Light Rain
      3:52 AM 73 °F 72 °F 96 % CALM 0 mph - 29.6 in 0 in Cloudy
      4:52 AM 73 °F 72 °F 96 % W 3 mph - 29.58 in 0 in Light Rain
      5:45 AM 72 °F 72 °F 100 % SE 3 mph - 29.56 in 0.01 in Light Rain
      5:52 AM 72 °F 71 °F 97 % SSE 6 mph - 29.56 in 0.01 in Light Rain
      6:22 AM 73 °F 72 °F 96 % WSW 6 mph - 29.58 in 0.01 in Light Rain
      6:52 AM 72 °F 72 °F 100 % CALM 0 mph - 29.58 in 0.01 in Mostly Cloudy
      7:24 AM 72 °F 71 °F 97 % S 3 mph - 29.59 in 0 in Mostly Cloudy
      7:52 AM 73 °F 72 °F 96 % CALM 0 mph - 29.6 in 0 in Mostly Cloudy
      8:52 AM 74 °F 72 °F 93 % S 3 mph - 29.61 in 0 in Mostly Cloudy
      9:52 AM 76 °F 72 °F 87 % CALM 0 mph - 29.61 in 0 in Mostly Cloudy
      10:20 AM 77 °F 73 °F 88 % CALM 0 mph - 29.61 in 0 in Mostly Cloudy
      10:52 AM 79 °F 72 °F 79 % SSW 6 mph - 29.62 in 0 in Mostly Cloudy
      11:52 AM 81 °F 72 °F 74 % WNW 5 mph - 29.61 in 0 in Mostly Cloudy
      12:52 PM 85 °F 71 °F 63 % VAR 6 mph - 29.58 in 0 in Mostly Cloudy
      1:23 PM 86 °F 72 °F 63 % VAR 6 mph - 29.58 in 0 in Mostly Cloudy
      1:52 PM 88 °F 73 °F 61 % VAR 6 mph - 29.56 in 0 in Mostly Cloudy
      2:52 PM 88 °F 72 °F 59 % W 5 mph - 29.54 in 0 in Mostly Cloudy
      3:52 PM 88 °F 70 °F 55 % W 6 mph - 29.53 in 0 in Partly Cloudy
      4:52 PM 84 °F 73 °F 69 % E 5 mph - 29.53 in 0 in Partly Cloudy
      5:52 PM 85 °F 72 °F 65 % E 5 mph - 29.53 in 0 in Partly Cloudy
      6:52 PM 83 °F 72 °F 69 % SE 6 mph - 29.54 in 0 in Mostly Cloudy
      7:52 PM 79 °F 72 °F 79 % SE 6 mph - 29.56 in 0 in Mostly Cloudy
      8:52 PM 77 °F 71 °F 82 % SSW 7 mph - 29.58 in 0 in Fair
      9:52 PM 77 °F 71 °F 82 % CALM 0 mph - 29.61 in 0 in Partly Cloudy
      10:52 PM 74 °F 71 °F 91 % CALM 0 mph - 29.61 in 0 in Fair
      11:52 PM 74 °F 72 °F 93 % CALM 0 mph - 29.6 in 0 in Partly Cloudy
      Level Access
      Glossary