Mount Holly (NJ) monthly weather averages

Average daytime temperature

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

Mount Holly average temperature chart (Celsius) Mount Holly average temperature chart (Fahrenheit)
Average monthly temperatures in Mount Holly (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 3.7 5.2 10.6 16.5 22.3 27.2 29.2 28.5 25 18.9 12.7 6.3
°F 38.6 41.4 51.1 61.7 72.2 81 84.6 83.2 76.9 66.1 54.8 43.4

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.

Mount Holly monthly rainfall chart (mm) Mount Holly monthly rainfall chart (inches)
Average monthly rainfall in Mount Holly (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 82 75 101 92 88 88 117 123 92 80 90 96
inches 3.2 3 4 3.6 3.5 3.4 4.6 4.9 3.6 3.1 3.5 3.8
Rainy days 10 10 10 11 11 10 9 9 8 7 10 10

Average daily sunshine

The bar chart below shows the average daily sunshine hours in Mount Holly

Mount Holly average daily sunshine chart
Average daily sunshine Mount Holly
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 5.6 6.3 7.2 7.9 8.5 9.5 9.4 9 7.9 7.1 5.6 5

Day / night temperatures

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

Mount Holly average minimum / maximum temperatures (Celsius) Mount Holly average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Mount Holly (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -6.1 -5.1 -0.5 4 9.6 14.7 17.5 16.9 13 6.6 2.1 -3.2
Max °C 3.9 5.5 10.9 16.8 22.7 27.5 29.5 28.8 25.3 19.3 13 6.6
Min °F 21 22.9 31.1 39.2 49.2 58.5 63.5 62.3 55.3 43.8 35.7 26.3
Max °F 30 32.4 41.4 50.7 61 70 74.3 73 66.4 55.2 45.5 35.1

Sea temperature

The graph below shows the average sea temperature.

Mount Holly average sea temperature chart (Celsius) Mount Holly average sea temperature chart (Fahrenheit)
Average sea temperature around Mount Holly in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 5.3 3.3 3.6 6.5 11.3 17.2 22.2 23.6 21.5 17.2 12.4 8.4
°F 41.5 38 38.6 43.6 52.3 62.9 72 74.4 70.7 63 54.4 47.2

Wind speed

The graph below shows the average wind speed.

Mount Holly average winspeed by month (km/h) Mount Holly average winspeed by month (mph)
Average wind speed in Mount Holly (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 18 19 20 19 17 16 14 14 15 16 17 18
mph 11 12 12 12 11 10 9 9 9 10 11 11

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.

Mount Holly relative humidity averages
Average relative humidity in Mount Holly
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
68% 66% 64% 62% 67% 69% 70% 72% 73% 72% 70% 69%

Other monthly averages

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Mount Holly weather stats

Mount Holly weather statistics
Hottest month: July 29.2°C 84.6°F
Driest month: February 75mm 3ins
Sunniest month: August 9hrs
Coldest month: January 3.7°C 38.7°F
Wettest month: August 123mm 4.8ins
Warmest sea: August 23.6°C 74.5°F
Map showing location of Mount Holly (39.99289, -74.78766)

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