Upper Marlboro (MD) monthly weather averages

Contents

Average daytime temperature

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

Upper Marlboro average temperature chart (Celsius) Upper Marlboro average temperature chart (Fahrenheit)
Average monthly temperatures in Upper Marlboro (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 5.3 6.6 12.7 18.2 23.6 27.8 30 29.2 25.8 20 14.1 7.5
°F 41.5 43.9 54.8 64.8 74.4 82.1 86.1 84.6 78.5 68 57.4 45.5

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.

Upper Marlboro monthly rainfall chart (mm) Upper Marlboro monthly rainfall chart (inches)
Average monthly rainfall in Upper Marlboro (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 74 70 94 80 94 91 105 109 92 79 86 85
inches 2.9 2.7 3.7 3.1 3.7 3.6 4.1 4.3 3.6 3.1 3.4 3.4
Rainy days 10 9 10 10 11 10 10 9 7 7 8 9

Average annual rainfall in Upper Marlboro: 1020.7mm (401.9 inches)

Average daily sunshine

The bar chart below shows the average daily sunshine hours in Upper Marlboro

Upper Marlboro average daily sunshine chart
Average daily sunshine Upper Marlboro
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 5.5 6.2 7.4 8.4 9 10.1 9.8 9.1 8.1 7.3 5.9 5.2

Day / night temperatures

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

Upper Marlboro average minimum / maximum temperatures (Celsius) Upper Marlboro average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Upper Marlboro (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -4.7 -3.7 1.1 5.9 11.4 16.3 18.9 18.1 14.3 7.7 3 -2.2
Max °C 5.5 6.9 13 18.5 23.9 28.1 30.3 29.5 26.1 20.3 14.4 7.8
Min °F 23.5 25.4 33.9 42.6 52.4 61.3 66 64.6 57.7 45.9 37.4 28.1
Max °F 32.7 34.9 44.6 54 63.7 72 76.3 74.8 68.4 57.2 47.7 37

Sea temperature

The graph below shows the average sea temperature.

Upper Marlboro average sea temperature chart (Celsius) Upper Marlboro average sea temperature chart (Fahrenheit)
Average sea temperature around Upper Marlboro in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 2.6 0.7 1.6 5.5 10.9 17.6 22.8 24 21.7 16.8 11.4 6.5
°F 36.7 33.3 34.9 41.9 51.6 63.6 73.1 75.2 71.1 62.2 52.4 43.6

Wind speed

The graph below shows the average wind speed.

Upper Marlboro average winspeed by month (km/h) Upper Marlboro average winspeed by month (mph)
Average wind speed in Upper Marlboro (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 16 17 18 17 15 14 13 13 13 14 15 16
mph 10 11 11 11 9 9 8 8 8 9 9 10

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.

Upper Marlboro relative humidity averages
Average relative humidity in Upper Marlboro
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
64% 62% 60% 60% 67% 68% 69% 71% 72% 70% 67% 66%

Other monthly averages

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Beta

Current (hourly) weather 15 day forecast

Upper Marlboro weather stats

Upper Marlboro weather statistics
Hottest month: July 30°C 86°F
Driest month: February 70mm 2.8ins
Sunniest month: June 10.1hrs
Coldest month: January 5.3°C 41.5°F
Wettest month: August 109mm 4.3ins
Warmest sea: August 24°C 75.2°F
Map showing location of Upper Marlboro (38.81595, -76.74969) Upper Marlboro map pin © Google

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