Rockland (ME) monthly weather averages

Average daytime temperature

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

Rockland average temperature chart (Celsius) Rockland average temperature chart (Fahrenheit)
Average monthly temperatures in Rockland (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C -1.4 -0.1 4.8 11.2 17.5 22.4 25.6 24.6 20.4 14.6 8.2 1.2
°F 29.6 31.8 40.7 52.1 63.6 72.3 78.1 76.4 68.7 58.3 46.8 34.1

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.

Rockland monthly rainfall chart (mm) Rockland monthly rainfall chart (inches)
Average monthly rainfall in Rockland (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 99 86 100 101 96 87 79 79 92 101 127 119
inches 3.9 3.4 3.9 4 3.8 3.4 3.1 3.1 3.6 4 5 4.7
Rainy days 12 10 12 12 12 12 11 10 10 11 12 13

Average annual rainfall in Rockland: 1141mm (449.2 inches)

Average daily sunshine

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

Rockland average daily sunshine chart
Average daily sunshine Rockland
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 4.6 5.5 6.1 6.8 7.7 8.4 8.7 8.3 7.3 6 4.3 4

Day / night temperatures

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

Rockland average minimum / maximum temperatures (Celsius) Rockland average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Rockland (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -11.7 -10.6 -4.5 1.2 6.6 11.6 15 14.3 10 4.6 -0.3 -8.2
Max °C -1.1 0.1 5.1 11.4 17.8 22.7 25.9 24.9 20.7 14.9 8.5 1.4
Min °F 10.9 13 24 34.2 43.9 52.8 58.9 57.7 49.9 40.2 31.6 17.2
Max °F 20.5 22.6 32.5 43.3 54 62.8 68.7 67.3 59.5 49.5 39.4 25.9

Sea temperature

The graph below shows the average sea temperature.

Rockland average sea temperature chart (Celsius) Rockland average sea temperature chart (Fahrenheit)
Average sea temperature around Rockland in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 5.4 4.1 3.6 4.8 7.8 11.5 14.8 15.8 14.1 11.5 9.2 7.2
°F 41.8 39.3 38.5 40.7 46.1 52.8 58.7 60.5 57.4 52.7 48.5 45

Wind speed

The graph below shows the average wind speed.

Rockland average winspeed by month (km/h) Rockland average winspeed by month (mph)
Average wind speed in Rockland (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 16 17 17 17 15 14 13 12 13 14 15 16
mph 10 10 11 11 9 9 8 8 8 9 9 10

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.

Rockland relative humidity averages
Average relative humidity in Rockland
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
70% 68% 69% 70% 72% 75% 77% 78% 79% 76% 76% 73%