TODAY NOV20
TEMPERATURE73°F
HUMIDITY74%
PRESSURE30.12 inHg
WIND COND.180° 5.8 mph
  • 8562Fri
  • 8569Sat30%
  • 7969Sun50% | 60%
  • 7969Columbus Day50% | 50%
  • 8363Tue40% | 40%
daynightWeather update from Washington/Reagan National Airport, DC, on 5 Oct 20:52 pm EDT

McLean Average Weather

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
January8°F73°F38°F2.7"
February10°F74°F38°F2.2"
March14°F85°F46°F2.6"
April28°F92°F57°F4.1"
May38°F95°F65°F5.7"
June54°F98°F75°F5.8"
July62°F98°F79°F3.1"
August61°F102°F79°F2.1"
September50°F95°F72°F3.3"
October37°F94°F60°F5.7"
November21°F77°F50°F3.1"
December16°F75°F40°F3.7"

Did you know?

  • The highest monthly average temperature in McLean for August is 79 degrees.
  • The lowest monthly average temperature in McLean for February is 38 degrees.
  • The most monthly precipitation in McLean occurs in June with 5.8 inches.
  • The air quality index in McLean is 1% better than the national average.
  • The pollution index in McLean is 188% worse than the national average.

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Compare McLean, VA Weather To Other Cities

McLean 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.
IndexMcLeanVirginiaNational
Air quality index495750
Pollution index14,693,9001,483,0175,100,859

McLean air quality information

MeasurementTotal
Days measured365
Days with good air quality194
Days with moderate air quality166
Days w/ poor A.Q. for sensitive groups5
Days with unhealthy air quality

McLean air quality information

PollutantTotal
Arsenic0.190%
Benzene0.210%
Carbon Tetrachloride0.060%
Lead0.060%
Mercury0.010%

Average monthly McLean temperature with heat index

McLean monthly precipitation with daily maximum

McLean monthly snow depth with daily maximum

McLean monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Washington, DC633,7363334%
University Center, VA3,9673334%
Woodlawn CDP (Fairfax County), VA20,8113530%
Woodlawn, VA2,0823530%
Hayfield, VA4,5013726%
McLean, VA48,078492%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Bedford, TX48,104548%
Caldwell, ID48,1143628%
Mishawaka, IN48,120512%
Methuen Town, MA48,1593628%
Alexandria, LA47,983435770%
McLean, VA48,078492%
Source: The McLean, 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.