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      Elev 367 ft, 38.940 °N 77.399 °W

      Herndon, VA

      Summary

      Temperature (°F) Actual Historic Avg. Record
      High Temp697396
      Low Temp625132
      Day Average Temp65.13--
      Precipitation (in) Actual Historic Avg. Record
      Precipitation02.9-
      Dew Point (°F) Actual Historic Avg. Record
      Dew Point60.5--
      High62--
      Low59--
      Average60.5--
      Wind (mph) Actual Historic Avg. Record
      Max Wind Speed9--
      Visibility10--
      Sea Level Pressure (in) Actual Historic Avg. Record
      Sea Level Pressure29.66--
      Astronomy Day Length Rise Set
      Actual Time11h 44m7:06 AM6:50 PM
      Civil Twilight6:39 AM7:17 PM
      Nautical Twilight6:09 AM7:48 PM
      Astronomical Twilight5:37 AM8:19 PM
      Moon: Waning gibbous11:02 PM1:58 PM

      Daily Observations

      TimeTemperatureDew PointHumidityWindWind SpeedWind GustPressurePrecip.Condition
      12:52 AM 69 °F 62 °F 78 % S 9 mph - 29.68 in 0 in Fair
      1:52 AM 68 °F 61 °F 78 % SSW 8 mph - 29.67 in 0 in Fair
      2:52 AM 67 °F 61 °F 81 % S 9 mph - 29.66 in 0 in Fair
      3:52 AM 66 °F 61 °F 84 % S 8 mph - 29.65 in 0 in Fair
      4:52 AM 64 °F 60 °F 87 % CALM 0 mph - 29.64 in 0 in Fair
      5:52 AM 62 °F 60 °F 93 % CALM 0 mph - 29.65 in 0 in Fair
      6:52 AM 63 °F 60 °F 90 % CALM 0 mph - 29.65 in 0 in Partly Cloudy
      7:52 AM 62 °F 59 °F 90 % CALM 0 mph - 29.66 in 0 in Mostly Cloudy
      Level Access
      Glossary