TODAY NOV20
TEMPERATURE72°F
HUMIDITY68%
PRESSURE30.12 inHg
WIND COND.160° 3.5 mph
  • 8360Fri
  • 8469Sat30%
  • 8069Sun60% | 60%
  • 8069Columbus Day50% | 50%
  • 8363Tue40% | 40%
daynightWeather update from Manassas, Manassas Regional Airport/Harry P. Davis Field, on 5 Oct 18:56 pm EDT

Manassas 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
January3°F73°F38°F0.6"
February3°F68°F34°F0.6"
March3°F84°F44°F1.0"
April25°F88°F55°F1.5"
May32°F95°F63°F1.9"
June46°F97°F73°F1.7"
July52°F99°F75°F2.3"
August52°F102°F76°F0.7"
September37°F93°F68°F1.1"
October27°F93°F57°F0.6"
November18°F79°F47°F0.6"
December12°F75°F37°F0.4"

Did you know?

  • The highest monthly average temperature in Manassas for August is 76 degrees.
  • The lowest monthly average temperature in Manassas for February is 34 degrees.
  • The most monthly precipitation in Manassas occurs in July with 2.3 inches.
  • The air quality index in Manassas is 1% better than the national average.
  • The pollution index in Manassas is 89% better than the national average.

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Compare Manassas, VA Weather To Other Cities

Manassas 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.
IndexManassasVirginiaNational
Air quality index495750
Pollution index520,9361,483,0175,100,859

Manassas 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

Manassas air quality information

PollutantTotal
Arsenic0.020%
Benzene0.010%
Carbon Tetrachloride0.002%
Lead0.050%
Mercury0.001%

Average monthly Manassas temperature with heat index

Manassas monthly precipitation with daily maximum

Manassas monthly snow depth with daily maximum

Manassas monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
New Baltimore, VA8,9553726%
Bull Run Mountain Estates, VA1,0513726%
County Center, VA2,5473922%
Fair Oaks, VA32,3923922%
George Mason, VA9,9283922%
Manassas, VA40,436492%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Brea, CA40,4438570%
Fitchburg, MA40,4193824%
Shelton, CT40,472492%
Norwich, CT40,3784412%
Beverly, MA40,370476%
Manassas, VA40,436492%
Source: The Manassas, 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.