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      Elev 114 ft, 38.960 °N 77.382 °W

      Herndon, VA

      Summary

      Temperature (°F) Actual Historic Avg. Record
      High Temp8788101
      Low Temp706748
      Day Average Temp76.83--
      Precipitation (in) Actual Historic Avg. Record
      Precipitation1.984.9-
      Dew Point (°F) Actual Historic Avg. Record
      Dew Point71.51--
      High75--
      Low68--
      Average71.51--
      Wind (mph) Actual Historic Avg. Record
      Max Wind Speed14--
      Visibility10--
      Sea Level Pressure (in) Actual Historic Avg. Record
      Sea Level Pressure29.46--
      Astronomy Day Length Rise Set
      Actual Time14h 29m6:01 AM8:30 PM
      Civil Twilight5:30 AM9:01 PM
      Nautical Twilight4:52 AM9:38 PM
      Astronomical Twilight4:09 AM10:21 PM
      Moon: First quarter2:01 PM-

      Daily Observations

      TimeTemperatureDew PointHumidityWindWind SpeedWind GustPressurePrecip.Condition
      12:52 AM 77 °F 71 °F 82 % S 7 mph - 29.56 in 0 in Mostly Cloudy
      1:52 AM 77 °F 71 °F 82 % S 6 mph - 29.56 in 0 in Cloudy
      2:52 AM 76 °F 72 °F 87 % SSE 9 mph - 29.53 in 0 in Mostly Cloudy
      3:52 AM 75 °F 72 °F 90 % SSE 6 mph - 29.52 in 0 in Partly Cloudy
      4:19 AM 75 °F 72 °F 90 % SSE 7 mph - 29.51 in 0 in Mostly Cloudy
      4:52 AM 76 °F 72 °F 87 % S 8 mph - 29.51 in 0 in Cloudy
      5:52 AM 75 °F 72 °F 90 % S 6 mph - 29.51 in 0 in Cloudy
      5:54 AM 75 °F 72 °F 90 % S 6 mph - 29.51 in 0 in Cloudy
      6:52 AM 76 °F 72 °F 87 % SSE 5 mph - 29.5 in 0 in Cloudy
      7:52 AM 76 °F 72 °F 87 % S 8 mph - 29.5 in 0 in Cloudy
      8:52 AM 77 °F 72 °F 84 % SSW 10 mph - 29.49 in 0 in Light Rain
      9:49 AM 79 °F 72 °F 78 % SW 10 mph - 29.5 in 0 in Mostly Cloudy
      9:52 AM 79 °F 72 °F 79 % SW 10 mph - 29.5 in 0 in Mostly Cloudy
      10:52 AM 81 °F 73 °F 77 % SW 8 mph - 29.49 in 0 in Mostly Cloudy
      11:52 AM 83 °F 73 °F 72 % S 10 mph - 29.48 in 0 in Mostly Cloudy
      12:52 PM 87 °F 74 °F 65 % SSW 12 mph - 29.46 in 0 in Mostly Cloudy
      1:52 PM 87 °F 75 °F 67 % SSW 12 mph - 29.46 in 0 in Cloudy
      2:52 PM 87 °F 74 °F 65 % SSW 9 mph - 29.44 in 0 in Cloudy
      3:52 PM 87 °F 73 °F 63 % SSW 9 mph 21 mph 29.41 in 0 in Cloudy
      4:52 PM 87 °F 74 °F 65 % WSW 3 mph - 29.39 in 0 in Light Rain
      5:52 PM 82 °F 74 °F 76 % SSW 14 mph - 29.4 in 0 in Cloudy
      6:52 PM 80 °F 73 °F 79 % SSW 6 mph - 29.4 in 0 in Cloudy
      7:23 PM 77 °F 72 °F 84 % SSE 5 mph - 29.42 in 0.01 in Light Rain with Thunder
      7:52 PM 76 °F 73 °F 91 % S 5 mph - 29.43 in 0.02 in Light Rain with Thunder
      8:21 PM 75 °F 73 °F 94 % NW 6 mph - 29.45 in 0.04 in Light Rain with Thunder
      8:52 PM 73 °F 71 °F 93 % N 10 mph - 29.46 in 0.19 in Heavy T-Storm
      9:20 PM 71 °F 68 °F 90 % NNE 8 mph - 29.43 in 0.47 in T-Storm
      9:35 PM 71 °F 69 °F 93 % CALM 0 mph - 29.44 in 0.52 in Heavy T-Storm
      9:52 PM 70 °F 68 °F 93 % S 5 mph - 29.42 in 0.64 in Rain
      9:58 PM 70 °F 68 °F 93 % SSW 7 mph - 29.42 in 0.01 in Light Rain with Thunder
      10:01 PM 70 °F 68 °F 93 % S 6 mph - 29.41 in 0.02 in Light Rain with Thunder
      10:44 PM 71 °F 70 °F 96 % S 8 mph - 29.43 in 0.03 in Light Rain
      10:52 PM 71 °F 69 °F 93 % SSW 9 mph - 29.43 in 0.03 in Light Rain
      11:28 PM 70 °F 69 °F 97 % S 8 mph - 29.42 in 0 in Cloudy
      11:52 PM 70 °F 68 °F 93 % S 9 mph - 29.41 in 0 in Cloudy
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