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      Small Craft Advisory
      until 4:00 AM EDT
      Elev 387 ft, 38.972 °N 77.390 °W

      Herndon, VA

      Herndon Heights Station83°

      Summary

      Temperature (°F) Actual Historic Avg. Record
      High Temp888298
      Low Temp666140
      Day Average Temp76.68--
      Precipitation (in) Actual Historic Avg. Record
      Precipitation03.4-
      Dew Point (°F) Actual Historic Avg. Record
      Dew Point63.53--
      High66--
      Low60--
      Average63.53--
      Wind (mph) Actual Historic Avg. Record
      Max Wind Speed13--
      Visibility10--
      Sea Level Pressure (in) Actual Historic Avg. Record
      Sea Level Pressure29.84--
      Astronomy Day Length Rise Set
      Actual Time12h 41m6:45 AM7:27 PM
      Civil Twilight6:18 AM7:54 PM
      Nautical Twilight5:46 AM8:26 PM
      Astronomical Twilight5:13 AM8:58 PM
      Moon: Waning crescent4:54 AM6:42 PM

      Daily Observations

      TimeTemperatureDew PointHumidityWindWind SpeedWind GustPressurePrecip.Condition
      12:52 AM 70 °F 63 °F 78 % S 7 mph - 29.89 in 0 in Fair
      1:52 AM 70 °F 62 °F 76 % S 7 mph - 29.88 in 0 in Fair
      2:52 AM 68 °F 62 °F 81 % SSW 6 mph - 29.88 in 0 in Fair
      3:52 AM 67 °F 62 °F 84 % S 6 mph - 29.88 in 0 in Fair
      4:52 AM 67 °F 61 °F 81 % S 9 mph - 29.88 in 0 in Fair
      5:52 AM 66 °F 61 °F 84 % S 8 mph - 29.88 in 0 in Fair
      6:52 AM 66 °F 60 °F 81 % SSW 8 mph - 29.89 in 0 in Fair
      7:52 AM 68 °F 61 °F 78 % S 9 mph - 29.9 in 0 in Partly Cloudy
      8:52 AM 71 °F 62 °F 73 % S 8 mph - 29.89 in 0 in Partly Cloudy
      9:52 AM 76 °F 64 °F 67 % SSW 9 mph - 29.89 in 0 in Mostly Cloudy
      10:52 AM 79 °F 65 °F 62 % S 7 mph - 29.88 in 0 in Mostly Cloudy
      11:52 AM 82 °F 66 °F 58 % S 9 mph - 29.86 in 0 in Partly Cloudy
      12:52 PM 85 °F 66 °F 53 % SSW 12 mph - 29.84 in 0 in Partly Cloudy
      1:52 PM 87 °F 65 °F 48 % SW 12 mph - 29.81 in 0 in Mostly Cloudy
      2:52 PM 88 °F 66 °F 48 % S 13 mph - 29.78 in 0 in Partly Cloudy
      3:52 PM 88 °F 66 °F 48 % S 13 mph 22 mph 29.75 in 0 in Partly Cloudy
      4:52 PM 88 °F 65 °F 46 % SSW 12 mph 22 mph 29.73 in 0 in Fair
      5:52 PM 87 °F 65 °F 48 % SSW 12 mph 25 mph 29.71 in 0 in Fair
      6:52 PM 84 °F 65 °F 53 % S 12 mph 21 mph 29.7 in 0 in Fair
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