Rumson (NJ) monthly weather averages

Contents

Average daytime temperature

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

Rumson average temperature chart (Celsius) Rumson average temperature chart (Fahrenheit)
Average monthly temperatures in Rumson (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 2.9 4.3 9.4 15.2 20.7 25.7 28.6 27.9 23.9 18.1 12 5.7
°F 37.1 39.7 48.8 59.3 69.2 78.3 83.5 82.2 75.1 64.5 53.6 42.3

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.

Rumson monthly rainfall chart (mm) Rumson monthly rainfall chart (inches)
Average monthly rainfall in Rumson (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 87 81 101 101 103 88 109 103 91 82 101 95
inches 3.4 3.2 4 4 4.1 3.5 4.3 4.1 3.6 3.2 4 3.7
Rainy days 10 10 11 10 11 10 9 9 8 7 10 11

Average annual rainfall in Rumson: 1108.54mm (436.4 inches)

Average daily sunshine

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

Rumson average daily sunshine chart
Average daily sunshine Rumson
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 5.8 6.5 7.5 8.2 8.8 9.3 9.3 9.2 7.9 7.4 5.6 5

Day / night temperatures

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

Rumson average minimum / maximum temperatures (Celsius) Rumson average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Rumson (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -4.6 -3.6 0.7 5.5 11.1 16.2 19.5 19 14.9 8.8 4 -1.4
Max °C 3 4.5 9.6 15.4 20.9 26 28.8 28.1 24.1 18.3 12.2 5.9
Min °F 23.8 25.5 33.3 42 51.9 61.2 67 66.1 58.9 47.8 39.2 29.4
Max °F 30.6 32.8 41.3 50.9 60.8 70 75.5 74.4 67.2 56.4 46.6 36

Sea temperature

The graph below shows the average sea temperature.

Rumson average sea temperature chart (Celsius) Rumson average sea temperature chart (Fahrenheit)
Average sea temperature around Rumson in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 6.8 4.9 4.8 6.9 11.2 17 21.8 22.8 20.6 16.8 12.9 9.6
°F 44.2 40.8 40.6 44.4 52.2 62.5 71.3 73 69.1 62.3 55.2 49.2

Wind speed

The graph below shows the average wind speed.

Rumson average winspeed by month (km/h) Rumson average winspeed by month (mph)
Average wind speed in Rumson (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 21 21 22 21 19 17 16 16 17 17 19 20
mph 13 13 14 13 12 11 10 10 10 11 12 13

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.

Rumson relative humidity averages
Average relative humidity in Rumson
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
65% 64% 62% 61% 66% 68% 68% 70% 71% 68% 68% 67%

Other monthly averages

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Beta

Current (hourly) weather 15 day forecast

Rumson weather stats

Rumson weather statistics
Hottest month: July 28.6°C 83.5°F
Driest month: February 81mm 3.2ins
Sunniest month: August 9.2hrs
Coldest month: January 2.9°C 37.2°F
Wettest month: July 109mm 4.3ins
Warmest sea: August 22.8°C 73°F
Map showing location of Rumson (40.37205, -73.99903) Rumson map pin © Google

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