Gaithersburg (MD) monthly weather averages

Contents

Average daytime temperature

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

Gaithersburg average temperature chart (Celsius) Gaithersburg average temperature chart (Fahrenheit)
Average monthly temperatures in Gaithersburg (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 4.3 6.2 12.2 18 23.4 28 30.4 29.5 25.8 19.6 13.3 7
°F 39.8 43.2 54 64.4 74.1 82.3 86.7 85.1 78.4 67.3 56 44.5

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.

Gaithersburg monthly rainfall chart (mm) Gaithersburg monthly rainfall chart (inches)
Average monthly rainfall in Gaithersburg (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 72 70 87 81 103 92 94 98 91 81 87 84
inches 2.8 2.7 3.4 3.2 4.1 3.6 3.7 3.9 3.6 3.2 3.4 3.3
Rainy days 10 10 10 10 12 10 10 10 8 8 9 10

Average annual rainfall in Gaithersburg: 999.433mm (393.5 inches)

Average daily sunshine

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

Gaithersburg average daily sunshine chart
Average daily sunshine Gaithersburg
  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 9.8 9.1 7.9 7 5.4 4.7

Day / night temperatures

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

Gaithersburg average minimum / maximum temperatures (Celsius) Gaithersburg average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Gaithersburg (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -5.4 -4.1 0.7 5.5 11.1 16 18.8 18 14 7.1 2.4 -2.6
Max °C 4.6 6.5 12.5 18.3 23.7 28.3 30.7 29.8 26.1 19.9 13.6 7.2
Min °F 22.4 24.6 33.3 41.9 52 60.7 65.8 64.4 57.1 44.8 36.3 27.3
Max °F 31.3 34.2 43.9 53.4 63.3 71.8 76.5 75 68 56.3 46.4 36.1

Sea temperature

The graph below shows the average sea temperature.

Gaithersburg average sea temperature chart (Celsius) Gaithersburg average sea temperature chart (Fahrenheit)
Average sea temperature around Gaithersburg in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 2.7 1 1.6 5 10.3 17 22.3 23.6 21.4 16.6 11.2 6.3
°F 36.8 33.8 35 41 50.5 62.6 72.2 74.6 70.6 61.8 52.2 43.4

Wind speed

The graph below shows the average wind speed.

Gaithersburg average winspeed by month (km/h) Gaithersburg average winspeed by month (mph)
Average wind speed in Gaithersburg (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 15 15
mph 10 10 11 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.

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

Other monthly averages

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Beta

Current (hourly) weather 15 day forecast

Gaithersburg weather stats

Gaithersburg weather statistics
Hottest month: July 30.4°C 86.7°F
Driest month: February 70mm 2.8ins
Sunniest month: June 10hrs
Coldest month: January 4.3°C 39.7°F
Wettest month: May 103mm 4.1ins
Warmest sea: August 23.6°C 74.5°F
Map showing location of Gaithersburg (39.14344, -77.20137) Gaithersburg map pin © Google

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