Idaho Falls (ID) monthly weather averages

Average daytime temperature

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

Idaho Falls average temperature chart (Celsius) Idaho Falls average temperature chart (Fahrenheit)
Average monthly temperatures in Idaho Falls (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C -3 0.8 6.5 13.2 18.8 24.2 29.6 28.6 22.4 15.3 5.6 -1.6
°F 26.7 33.5 43.7 55.7 65.9 75.6 85.3 83.5 72.4 59.6 42.1 29.2

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.

Idaho Falls monthly rainfall chart (mm) Idaho Falls monthly rainfall chart (inches)
Average monthly rainfall in Idaho Falls (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 22 21 22 26 35 32 16 17 23 21 26 23
inches 0.9 0.8 0.9 1 1.4 1.3 0.6 0.7 0.9 0.8 1 0.9
Rainy days 11 10 10 9 10 8 5 6 6 6 9 11

Average annual rainfall in Idaho Falls: 215.234mm (84.7 inches)

Average daily sunshine

The bar chart below shows the average daily sunshine hours in Idaho Falls

Idaho Falls average daily sunshine chart
Average daily sunshine Idaho Falls
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 4.7 6.3 8.2 9.3 10.3 11.8 13 11.8 10.2 8.3 4.9 4.2

Day / night temperatures

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

Idaho Falls average minimum / maximum temperatures (Celsius) Idaho Falls average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Idaho Falls (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -12.1 -9.1 -4.6 -0.5 3.8 7.8 10.7 9.5 4.8 -0.5 -4.9 -10.9
Max °C -2.8 1.1 6.8 13.5 19.2 24.7 30.1 29.1 22.9 15.7 5.9 -1.4
Min °F 10.3 15.7 23.8 31.1 38.8 46 51.3 49.1 40.6 31.1 23.3 12.5
Max °F 18.7 24.8 34 43.7 52.7 61.2 68.7 66.7 56.8 45.7 32.9 21

Sea temperature

The graph below shows the average sea temperature.

Idaho Falls average sea temperature chart (Celsius) Idaho Falls average sea temperature chart (Fahrenheit)
Average sea temperature around Idaho Falls in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 9.3 9.1 9.3 9.7 10.7 12.3 14.2 15.6 15.1 13.3 11.4 9.9
°F 48.7 48.5 48.7 49.5 51.2 54.1 57.6 60.1 59.1 55.9 52.4 49.9

Wind speed

The graph below shows the average wind speed.

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

Idaho Falls relative humidity averages
Average relative humidity in Idaho Falls
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
73% 70% 63% 54% 52% 49% 41% 41% 48% 55% 68% 73%