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      Elev 114 ft, 38.960 °N 77.382 °W

      Herndon, VA

      Summary

      Temperature (°F) Actual Historic Avg. Record
      High Temp626784
      Low Temp514531
      Day Average Temp55.76--
      Precipitation (in) Actual Historic Avg. Record
      Precipitation0.033.7-
      Dew Point (°F) Actual Historic Avg. Record
      Dew Point40.19--
      High52--
      Low29--
      Average40.19--
      Wind (mph) Actual Historic Avg. Record
      Max Wind Speed21--
      Visibility10--
      Sea Level Pressure (in) Actual Historic Avg. Record
      Sea Level Pressure29.82--
      Astronomy Day Length Rise Set
      Actual Time11h 6m7:21 AM6:28 PM
      Civil Twilight6:54 AM6:54 PM
      Nautical Twilight6:23 AM7:25 PM
      Astronomical Twilight5:52 AM7:56 PM
      Moon: Waxing crescent2:02 PM11:16 PM

      Daily Observations

      TimeTemperatureDew PointHumidityWindWind SpeedWind GustPressurePrecip.Condition
      12:52 AM 62 °F 52 °F 70 % NW 6 mph - 29.59 in 0 in Light Rain
      1:52 AM 61 °F 51 °F 70 % NW 9 mph - 29.59 in 0 in Cloudy
      2:52 AM 60 °F 50 °F 69 % NW 6 mph - 29.61 in 0 in Cloudy
      3:52 AM 58 °F 52 °F 81 % NNW 13 mph 20 mph 29.63 in 0.01 in Light Rain
      4:52 AM 56 °F 50 °F 80 % NNW 12 mph 20 mph 29.64 in 0 in Cloudy
      5:52 AM 55 °F 50 °F 83 % NNW 13 mph 21 mph 29.69 in 0.02 in Light Rain
      6:52 AM 54 °F 48 °F 80 % NNW 10 mph - 29.72 in 0 in Mostly Cloudy
      7:52 AM 54 °F 47 °F 77 % NNW 9 mph - 29.74 in 0 in Cloudy
      8:52 AM 54 °F 44 °F 69 % NNW 15 mph 24 mph 29.79 in 0 in Cloudy
      9:52 AM 53 °F 42 °F 66 % N 20 mph 28 mph 29.84 in 0 in Mostly Cloudy
      10:52 AM 54 °F 41 °F 62 % N 10 mph 21 mph 29.87 in 0 in Mostly Cloudy
      11:52 AM 53 °F 37 °F 55 % N 18 mph 25 mph 29.91 in 0 in Mostly Cloudy
      12:52 PM 54 °F 34 °F 47 % N 17 mph 26 mph 29.91 in 0 in Mostly Cloudy
      1:52 PM 57 °F 33 °F 40 % N 10 mph 23 mph 29.91 in 0 in Mostly Cloudy
      2:52 PM 59 °F 32 °F 36 % N 21 mph 30 mph 29.91 in 0 in Partly Cloudy / Windy
      3:52 PM 58 °F 32 °F 37 % NNW 20 mph 38 mph 29.91 in 0 in Fair
      4:52 PM 57 °F 31 °F 37 % NNW 13 mph 28 mph 29.93 in 0 in Fair
      5:52 PM 56 °F 30 °F 37 % NNW 15 mph 24 mph 29.95 in 0 in Fair
      6:52 PM 53 °F 30 °F 41 % NNW 10 mph - 29.99 in 0 in Fair
      7:52 PM 52 °F 29 °F 41 % N 15 mph 24 mph 30.02 in 0 in Fair
      8:52 PM 51 °F 29 °F 43 % NNW 9 mph - 30.05 in 0 in Fair
      Level Access
      Glossary