Commack (NY) monthly weather averages

Average daytime temperature

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

Commack average temperature chart (Celsius) Commack average temperature chart (Fahrenheit)
Average monthly temperatures in Commack (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 2.9 4 8.9 14.8 20.3 25.1 28 27.1 23.5 17.8 11.8 5.7
°F 37.2 39.3 48 58.6 68.6 77.2 82.3 80.8 74.2 64 53.3 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.

Commack monthly rainfall chart (mm) Commack monthly rainfall chart (inches)
Average monthly rainfall in Commack (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 93 84 107 107 104 91 93 100 92 92 109 105
inches 3.6 3.3 4.2 4.2 4.1 3.6 3.6 3.9 3.6 3.6 4.3 4.1
Rainy days 10 10 11 10 11 10 9 9 8 7 11 11

Average annual rainfall in Commack: 1142.067mm (449.6 inches)

Average daily sunshine

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

Commack average daily sunshine chart
Average daily sunshine Commack
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 6 6.8 7.8 8.4 9 9.5 9.4 9.1 8 7.4 5.5 5.1

Day / night temperatures

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

Commack average minimum / maximum temperatures (Celsius) Commack average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Commack (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -5.5 -4.9 -0.7 4 9.2 14.4 17.8 17.5 13.7 7.8 3.2 -2.3
Max °C 3.1 4.3 9.1 15.1 20.6 25.4 28.2 27.4 23.7 18 12.1 5.9
Min °F 22.1 23.3 30.7 39.1 48.6 57.9 64 63.4 56.7 46 37.7 27.9
Max °F 29.8 31.5 39.6 49.1 58.8 67.8 73.4 72.3 65.7 55.2 45.7 35.2

Sea temperature

The graph below shows the average sea temperature.

Commack average sea temperature chart (Celsius) Commack average sea temperature chart (Fahrenheit)
Average sea temperature around Commack 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.

Commack average winspeed by month (km/h) Commack average winspeed by month (mph)
Average wind speed in Commack (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 21 21 21 20 18 17 16 16 17 18 19 20
mph 13 13 13 13 11 11 10 10 10 11 12 12

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.

Commack relative humidity averages
Average relative humidity in Commack
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
67% 66% 65% 63% 70% 72% 72% 74% 74% 71% 70% 68%