Preston (ID) monthly weather averages

Average daytime temperature

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

Preston average temperature chart (Celsius) Preston average temperature chart (Fahrenheit)
Average monthly temperatures in Preston (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C -1 2.4 7.4 13.3 19.2 25 30.1 29 23.2 16.3 6.9 0.1
°F 30.2 36.4 45.3 56 66.5 77.1 86.3 84.3 73.7 61.4 44.5 32.1

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.

Preston monthly rainfall chart (mm) Preston monthly rainfall chart (inches)
Average monthly rainfall in Preston (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 38 33 40 44 49 37 22 24 32 36 37 37
inches 1.5 1.3 1.6 1.7 1.9 1.5 0.8 0.9 1.3 1.4 1.4 1.4
Rainy days 11 9 10 9 9 7 5 5 6 6 9 10

Average annual rainfall in Preston: 357.366mm (140.7 inches)

Average daily sunshine

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

Preston average daily sunshine chart
Average daily sunshine Preston
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 4.8 6.5 8.3 9.4 10.5 12.1 12.9 11.8 10.4 8.5 5.2 4.4

Day / night temperatures

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

Preston average minimum / maximum temperatures (Celsius) Preston average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Preston (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -11.1 -8.9 -4.5 -0.3 4.1 8.2 11.6 10.5 5.4 0.3 -4.4 -9.7
Max °C -0.8 2.7 7.7 13.7 19.6 25.5 30.6 29.5 23.6 16.7 7.2 0.3
Min °F 12.1 16 24 31.6 39.3 46.7 52.9 50.9 41.7 32.5 24.1 14.5
Max °F 21.4 26.4 34.9 44.1 53.2 62.2 70 68 58.1 47.3 34.5 23.5

Sea temperature

The graph below shows the average sea temperature.

Preston average sea temperature chart (Celsius) Preston average sea temperature chart (Fahrenheit)
Average sea temperature around Preston in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 9.7 9.6 9.7 10.2 11.2 12.8 14.8 16.2 15.7 13.8 11.9 10.4
°F 49.5 49.2 49.5 50.3 52.2 55.1 58.6 61.2 60.2 56.9 53.4 50.7

Wind speed

The graph below shows the average wind speed.

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

Preston relative humidity averages
Average relative humidity in Preston
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
73% 70% 62% 53% 51% 45% 39% 40% 46% 55% 67% 73%