TODAY SEP19
TEMPERATURE68
HUMIDITY93
PRESSURE101420
WIND COND.340 5.4
  • 8159Thu20%
  • 8459Fri
  • 8261Sat
  • 7758Sun
  • 7258Mon
daynightWeather update from Manassas, Manassas Regional Airport/Harry P. Davis Field at
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Weather Quick Facts

  • The highest monthly average temperature in Loch Lomond for July is 77.1 degrees
  • The lowest monthly average temperature in Loch Lomond for January is 33.8 degrees
  • The most monthly precipitation in Loch Lomond occurs in September with 11.6 inches
  • The air quality index in Loch Lomond is 12% worse than the national average
  • The pollution index in Loch Lomond is 92% better than the national average

Compare Loch Lomond, VA Weather

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      Loch Lomond Average Temperature

      In the event that the weather data was unavailable for this city, estimates based upon nearby cities were used.
      MonthTemp. (min)Temp. (max)Temp. (avg)Precipitation
      January25°F44°F34°F2.9"
      February25°F47°F35°F2.9"
      March34°F57°F45°F5.0"
      April43°F70°F56°F4.1"
      May54°F77°F65°F4.0"
      June62°F85°F73°F5.4"
      July67°F89°F77°F9.1"
      August65°F87°F75°F5.1"
      September58°F80°F68°F11.6"
      October46°F70°F57°F7.0"
      November35°F58°F45°F6.5"
      December30°F49°F39°F2.7"

      Loch Lomond air quality index & pollution index

      In the event that the air quality/pollution data was unavailable for this city, estimates based upon nearby cities were used.
      IndexLoch LomondVirginiaNational
      Air quality index475842
      Pollution index205,2161,561,8812,726,193

      Loch Lomond air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality209
      Days with moderate air quality145
      Days w/ poor A.Q. for sensitive groups10
      Days with unhealthy air quality1

      Loch Lomond air quality information

      PollutantTotal
      Arsenic0.001%
      Benzene0.002%
      Carbon Tetrachloride0.001%
      Lead0.000%
      Mercury0.000%

      Average monthly Loch Lomond temperature with heat index

      Loch Lomond monthly precipitation with daily maximum

      Loch Lomond monthly snow depth with daily maximum

      Loch Lomond monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      New Baltimore, VA11,0173824.0%
      Bull Run Mountain Estates, VA1,7773824.0%
      Middleburg, VA5733824.0%
      Buckhall, VA18,116476.0%
      Dulles Town Center, VA5,362476.0%
      Loch Lomond, VA4,325476.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Nikiski, AK4,3243138.0%
      Buena, NJ4,3234020.0%
      Coleman, TX4,3233334.0%
      Suquamish, WA4,3274510.0%
      Pixley, CA4,3226632.0%
      Loch Lomond, VA4,325476.0%
      Source: The Loch Lomond, VA weather data displayed above is derived from the NOAA (National Oceanic and Atmospheric). Air quality and pollution data is derived from the EPA (United States Environmental Protection Agency). Air quality and pollution levels measured in a particular area may not be representative of the entire county.