Saint Marys (WV) monthly weather averages

Contents

Average daytime temperature

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

Saint Marys average temperature chart (Celsius) Saint Marys average temperature chart (Fahrenheit)
Average monthly temperatures in Saint Marys (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 3.3 5.3 12 18.1 23.2 27.4 29 28.3 24.9 18.8 12.3 5.9
°F 37.9 41.6 53.6 64.6 73.8 81.3 84.3 82.9 76.8 65.8 54.2 42.6

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.

Saint Marys monthly rainfall chart (mm) Saint Marys monthly rainfall chart (inches)
Average monthly rainfall in Saint Marys (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 72 67 98 90 103 98 116 104 78 72 86 78
inches 2.8 2.6 3.9 3.6 4.1 3.9 4.5 4.1 3.1 2.8 3.4 3.1
Rainy days 16 14 15 14 13 12 12 11 10 10 13 15

Average annual rainfall in Saint Marys: 1019.567mm (401.4 inches)

Average daily sunshine

The bar chart below shows the average daily sunshine hours in Saint Marys

Saint Marys average daily sunshine chart
Average daily sunshine Saint Marys
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 3.9 4.8 6 7.1 8.1 8.8 8.5 8.1 7.3 6.4 4.1 3.2

Day / night temperatures

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

Saint Marys average minimum / maximum temperatures (Celsius) Saint Marys average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Saint Marys (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -6.8 -5.8 0.1 4.8 9.7 13.9 16.7 16.1 12.2 5.5 1.2 -3.7
Max °C 3.6 5.6 12.3 18.5 23.6 27.7 29.4 28.6 25.2 19.1 12.6 6.1
Min °F 19.9 21.6 32.2 40.6 49.4 57 62 60.9 54 41.9 34.2 25.3
Max °F 29.1 31.8 43.2 52.9 61.9 69.4 73.4 72.1 65.7 54.1 44.4 34.2

Sea temperature

The graph below shows the average sea temperature.

Saint Marys average sea temperature chart (Celsius) Saint Marys average sea temperature chart (Fahrenheit)
Average sea temperature around Saint Marys in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 5.7 4.8 4.8 7.1 12.2 18.8 23.4 24.3 22.2 17.3 12.3 8.1
°F 42.2 40.6 40.7 44.8 54 65.8 74.1 75.7 71.9 63.2 54.1 46.6

Wind speed

The graph below shows the average wind speed.

Saint Marys average winspeed by month (km/h) Saint Marys average winspeed by month (mph)
Average wind speed in Saint Marys (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 15 15 16 15 13 11 10 10 10 12 14 15
mph 9 9 10 9 8 7 6 6 6 7 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.

Saint Marys relative humidity averages
Average relative humidity in Saint Marys
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
71% 69% 65% 62% 67% 71% 74% 76% 76% 71% 71% 73%

Other monthly averages

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Beta

Current (hourly) weather 15 day forecast

Saint Marys weather stats

Saint Marys weather statistics
Hottest month: July 29°C 84.2°F
Driest month: February 67mm 2.6ins
Sunniest month: June 8.8hrs
Coldest month: January 3.3°C 37.9°F
Wettest month: July 116mm 4.6ins
Warmest sea: August 24.3°C 75.7°F
Map showing location of Saint Marys (39.39174, -81.20511) Saint Marys map pin © Google

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