Skip to main content

Mount Vernon CDP, Virginia

Official LSAD Designation: Mount Vernon CDP • Census GEOID: 5154144 • Fairfax County

Climate Normals & Weather Observations

30-year climate normals (1991–2020) and weather observations for Mount Vernon CDP.

Reference Weather Station: OXON HILL, MD US (ID: USC00186800) • Located 8.2 miles from community center • Elevation: 57.9 m
Month Average High (°F) Average Low (°F) Mean Temp (°F) Precipitation (in)
January 43.7° 27.4° 35.5° 3.08"
February 47.5° 28.3° 37.9° 2.89"
March 55.8° 35.0° 45.4° 4.04"
April 67.4° 44.7° 56.1° 3.38"
May 75.7° 54.7° 65.2° 4.45"
June 84.4° 63.8° 74.1° 4.85"
July 88.0° 68.8° 78.4° 4.96"
August 86.5° 67.3° 76.9° 4.16"
September 80.1° 60.5° 70.3° 4.37"
October 68.3° 48.2° 58.3° 3.75"
November 57.2° 38.5° 47.8° 3.13"
December 47.8° 31.3° 39.5° 3.75"

Annual Temperature History

2010–2025, completed calendar years only.

NOAA station OXON HILL, MD US (ID: USC00186800) • 8.2 miles from community center .

This is the same reference station used for monthly normals.

Annual mean Annual mean of daily highs Annual mean of daily lows
Annual temperature history at OXON HILL, MD US Year is the horizontal axis. Annual mean temperature in degrees Fahrenheit is the vertical axis. Dots show recorded years; lines connect consecutive available years only. Missing years are gaps, with no interpolation. Optional dashed lines show annual mean of daily highs and lows. Exact values appear in the data table below. 43.0 50.3 57.5 64.8 72.0 2010 2014 2018 2021 2025 Year Annual mean temperature (°F) 2010: Annual mean 57.8°F 2011: Annual mean 58.2°F 2012: Annual mean 59.1°F 2013: Annual mean 56.4°F 2014: Annual mean 55.2°F 2015: Annual mean 57.2°F 2016: Annual mean 58.1°F 2017: Annual mean 58.6°F 2018: Annual mean 57.4°F 2019: Annual mean 58.4°F 2020: Annual mean 58.6°F 2010: Annual mean of daily highs 67.4°F 2011: Annual mean of daily highs 67.8°F 2012: Annual mean of daily highs 68.9°F 2013: Annual mean of daily highs 65.5°F 2014: Annual mean of daily highs 64.8°F 2015: Annual mean of daily highs 66.7°F 2016: Annual mean of daily highs 67.6°F 2017: Annual mean of daily highs 68.0°F 2018: Annual mean of daily highs 66.4°F 2019: Annual mean of daily highs 68.3°F 2020: Annual mean of daily highs 68.2°F 2010: Annual mean of daily lows 48.2°F 2011: Annual mean of daily lows 48.7°F 2012: Annual mean of daily lows 49.3°F 2013: Annual mean of daily lows 47.2°F 2014: Annual mean of daily lows 45.5°F 2015: Annual mean of daily lows 47.6°F 2016: Annual mean of daily lows 48.6°F 2017: Annual mean of daily lows 49.1°F 2018: Annual mean of daily lows 48.3°F 2019: Annual mean of daily lows 48.6°F 2020: Annual mean of daily lows 49.1°F

Source: NOAA NCEI Global Summary of the Year.

Annual temperature data table (°F)
Annual station temperatures, 2010–2025. Unavailable means no reported value.
Year Annual mean (°F) Annual mean of daily highs (°F) Annual mean of daily lows (°F)
2010 57.8 67.4 48.2
2011 58.2 67.8 48.7
2012 59.1 68.9 49.3
2013 56.4 65.5 47.2
2014 55.2 64.8 45.5
2015 57.2 66.7 47.6
2016 58.1 67.6 48.6
2017 58.6 68.0 49.1
2018 57.4 66.4 48.3
2019 58.4 68.3 48.6
2020 58.6 68.2 49.1
2021 Unavailable Unavailable Unavailable
2022 Unavailable Unavailable Unavailable
2023 Unavailable Unavailable Unavailable
2024 Unavailable Unavailable Unavailable
2025 Unavailable Unavailable Unavailable
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.