McLean (VA) monthly weather averages

Contents

Average daytime temperature

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

McLean average temperature chart (Celsius) McLean average temperature chart (Fahrenheit)
Average monthly temperatures in McLean (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 4.8 6.6 12.5 18.2 23.5 28.1 30.4 29.5 25.8 19.7 13.6 7.3
°F 40.6 43.8 54.5 64.7 74.3 82.6 86.7 85.1 78.4 67.5 56.5 45.1

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.

McLean monthly rainfall chart (mm) McLean monthly rainfall chart (inches)
Average monthly rainfall in McLean (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 70 70 86 77 96 87 94 100 88 78 85 84
inches 2.7 2.8 3.4 3 3.8 3.4 3.7 3.9 3.5 3.1 3.3 3.3
Rainy days 10 10 10 10 12 10 10 10 8 8 9 9

Average annual rainfall in McLean: 975.767mm (384.2 inches)

Average daily sunshine

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

McLean average daily sunshine chart
Average daily sunshine McLean
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 5.2 5.9 7.1 8.1 8.9 10 9.7 9 8 7.1 5.5 4.8

Day / night temperatures

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

McLean average minimum / maximum temperatures (Celsius) McLean average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in McLean (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -4.8 -3.6 1.2 6 11.6 16.6 19.4 18.5 14.4 7.6 2.8 -2.1
Max °C 5 6.8 12.8 18.5 23.8 28.4 30.7 29.8 26.1 20 13.9 7.5
Min °F 23.4 25.5 34.2 42.7 52.9 61.9 66.8 65.2 57.8 45.7 37 28.2
Max °F 32.2 34.9 44.6 54 63.9 72.5 77 75.4 68.4 56.8 46.9 36.9

Sea temperature

The graph below shows the average sea temperature.

McLean average sea temperature chart (Celsius) McLean average sea temperature chart (Fahrenheit)
Average sea temperature around McLean 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.

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

McLean relative humidity averages
Average relative humidity in McLean
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
65% 64% 62% 61% 68% 69% 71% 73% 73% 71% 68% 67%

Other monthly averages

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Beta

Current (hourly) weather 15 day forecast

McLean weather stats

McLean weather statistics
Hottest month: July 30.4°C 86.7°F
Driest month: January 70mm 2.8ins
Sunniest month: June 10hrs
Coldest month: January 4.8°C 40.6°F
Wettest month: August 100mm 3.9ins
Warmest sea: August 24.2°C 75.6°F
Map showing location of McLean (38.93428, -77.17748) McLean map pin © Google

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