Manassas (VA) monthly weather averages

Contents

Average daytime temperature

The bar chart below shows the average monthly peak daytime temperatures at Manassas

Manassas average temperature chart (Celsius) Manassas average temperature chart (Fahrenheit)
Average monthly temperatures in Manassas (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 5.3 7 13 18.5 23.7 28.3 30.5 29.6 26.1 20 14 7.7
°F 41.5 44.7 55.3 65.4 74.7 83 86.8 85.2 78.9 68 57.2 45.8

Please note: these are the average peak daytime temperatures (usually around mid-afternoon) so do not show daytime / night highs and lows. To see the daily range of temperatures have a look at the temperature max / min chart below.

Average rainfall & rainy days

The graph below shows the average rainfall and number of rainy days per month.

Manassas monthly rainfall chart (mm) Manassas monthly rainfall chart (inches)
Average monthly rainfall in Manassas (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 69 70 86 78 93 84 91 100 86 78 84 84
inches 2.7 2.7 3.4 3.1 3.7 3.3 3.6 3.9 3.4 3.1 3.3 3.3
Rainy days 10 9 10 10 12 10 10 10 8 8 9 10

Average annual rainfall in Manassas: 963.333mm (379.3 inches)

Average daily sunshine

The bar chart below shows the average daily sunshine hours in Manassas

Manassas average daily sunshine chart
Average daily sunshine Manassas
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 5.2 6 7.1 8.2 9 10.1 9.7 9.1 8 7.1 5.5 4.8

Day / night temperatures

The graph below shows the daily range of temperatures for each month.

Manassas average minimum / maximum temperatures (Celsius) Manassas average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Manassas (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -4.9 -3.7 1.2 5.8 11.4 16.4 19.1 18.2 14.3 7.3 2.5 -2.3
Max °C 5.5 7.3 13.3 18.9 24 28.6 30.8 29.9 26.4 20.3 14.3 7.9
Min °F 23.2 25.3 34.1 42.4 52.5 61.5 66.3 64.7 57.7 45.1 36.5 27.9
Max °F 32.5 35.2 45 54.1 63.9 72.5 76.8 75.2 68.5 56.8 47.1 37

Sea temperature

The graph below shows the average sea temperature.

Manassas average sea temperature chart (Celsius) Manassas average sea temperature chart (Fahrenheit)
Average sea temperature around Manassas in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 4.2 2.6 3.3 6.7 11.8 18.2 23.2 24.2 22.1 17.3 12.2 7.7
°F 39.6 36.6 38 44.1 53.3 64.8 73.7 75.6 71.7 63.2 54 45.8

Wind speed

The graph below shows the average wind speed.

Manassas average winspeed by month (km/h) Manassas average winspeed by month (mph)
Average wind speed in Manassas (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 15 16 17 16 14 13 12 11 12 13 14 14
mph 9 10 10 10 9 8 7 7 7 8 9 9

A monthly average windspeed of over 16km/h or 10mph suggests a location is fairly windy.

Relative humidity

The graph below shows the average relative humidity.

Manassas relative humidity averages
Average relative humidity in Manassas
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
66% 64% 62% 61% 69% 70% 72% 74% 74% 71% 68% 68%

Other monthly averages

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Beta

Current (hourly) weather 15 day forecast

Manassas weather stats

Manassas weather statistics
Hottest month: July 30.5°C 86.9°F
Driest month: January 69mm 2.7ins
Sunniest month: June 10.1hrs
Coldest month: January 5.3°C 41.5°F
Wettest month: August 100mm 3.9ins
Warmest sea: August 24.2°C 75.6°F
Map showing location of Manassas (38.75095, -77.47527) Manassas map pin © Google

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