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      Elev 114 ft, 38.960 °N 77.382 °W

      Herndon, VA

      Summary

      Temperature (°F) Actual Historic Avg. Record
      High Temp878898
      Low Temp706752
      Day Average Temp77.54--
      Precipitation (in) Actual Historic Avg. Record
      Precipitation2.475-
      Dew Point (°F) Actual Historic Avg. Record
      Dew Point69.25--
      High72--
      Low68--
      Average69.25--
      Wind (mph) Actual Historic Avg. Record
      Max Wind Speed32--
      Visibility10--
      Sea Level Pressure (in) Actual Historic Avg. Record
      Sea Level Pressure29.61--
      Astronomy Day Length Rise Set
      Actual Time14h 42m5:53 AM8:36 PM
      Civil Twilight5:22 AM9:07 PM
      Nautical Twilight4:42 AM9:46 PM
      Astronomical Twilight3:58 AM10:31 PM
      Moon: Waning crescent2:27 AM6:19 PM

      Daily Observations

      TimeTemperatureDew PointHumidityWindWind SpeedWind GustPressurePrecip.Condition
      12:52 AM 70 °F 69 °F 97 % E 3 mph - 29.59 in 0 in Mostly Cloudy
      1:52 AM 71 °F 70 °F 96 % SSW 3 mph - 29.58 in 0 in Mostly Cloudy
      2:52 AM 71 °F 70 °F 96 % NW 3 mph - 29.57 in 0 in Mostly Cloudy
      3:52 AM 72 °F 69 °F 91 % NW 5 mph - 29.57 in 0 in Mostly Cloudy
      4:52 AM 72 °F 68 °F 87 % NW 5 mph - 29.57 in 0 in Mostly Cloudy
      5:52 AM 72 °F 68 °F 87 % NNW 7 mph - 29.59 in 0 in Mostly Cloudy
      6:52 AM 73 °F 68 °F 84 % NNW 6 mph - 29.61 in 0 in Mostly Cloudy
      7:52 AM 75 °F 68 °F 79 % NNW 6 mph - 29.61 in 0 in Mostly Cloudy
      8:52 AM 78 °F 68 °F 71 % NW 6 mph - 29.63 in 0 in Mostly Cloudy
      9:52 AM 81 °F 70 °F 69 % VAR 5 mph - 29.62 in 0 in Mostly Cloudy
      10:52 AM 82 °F 69 °F 65 % NW 8 mph - 29.62 in 0 in Mostly Cloudy
      11:52 AM 83 °F 70 °F 65 % WSW 8 mph - 29.63 in 0 in Mostly Cloudy
      12:52 PM 84 °F 69 °F 61 % W 7 mph - 29.63 in 0 in Mostly Cloudy
      1:52 PM 85 °F 69 °F 59 % NNW 7 mph - 29.61 in 0 in Mostly Cloudy
      2:52 PM 87 °F 69 °F 55 % NW 13 mph - 29.6 in 0 in Mostly Cloudy
      3:52 PM 87 °F 68 °F 53 % NW 8 mph - 29.58 in 0 in Mostly Cloudy
      4:52 PM 87 °F 69 °F 55 % NW 9 mph 17 mph 29.58 in 0 in Mostly Cloudy
      5:52 PM 86 °F 69 °F 57 % WNW 12 mph - 29.58 in 0 in Mostly Cloudy
      6:52 PM 84 °F 69 °F 61 % NW 7 mph - 29.59 in 0 in Mostly Cloudy
      7:52 PM 83 °F 70 °F 65 % NW 6 mph - 29.61 in 0 in Cloudy
      8:52 PM 82 °F 71 °F 69 % CALM 0 mph - 29.61 in 0 in Cloudy
      9:52 PM 75 °F 72 °F 90 % NE 23 mph 32 mph 29.64 in 0.17 in Heavy T-Storm / Windy
      9:59 PM 73 °F 71 °F 93 % E 32 mph 43 mph 29.63 in 0.26 in Heavy T-Storm / Windy
      10:11 PM 71 °F 68 °F 90 % E 15 mph 40 mph 29.66 in 0.5 in T-Storm
      10:14 PM 70 °F 68 °F 93 % ESE 14 mph 32 mph 29.66 in 0.5 in Light Rain with Thunder
      10:31 PM 71 °F 69 °F 93 % E 7 mph - 29.66 in 0.51 in T-Storm
      10:52 PM 72 °F 70 °F 93 % SE 6 mph - 29.65 in 0.53 in Light Rain
      11:52 PM 74 °F 71 °F 91 % NNW 5 mph - 29.68 in 0 in Mostly Cloudy
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