American Falls (ID) monthly weather averages

Average daytime temperature

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

American Falls average temperature chart (Celsius) American Falls average temperature chart (Fahrenheit)
Average monthly temperatures in American Falls (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C -0.3 3.3 8.1 13.9 19.2 24.7 29.8 28.9 23.1 16.5 7.2 0.6
°F 31.4 37.9 46.6 57.1 66.5 76.4 85.7 84 73.6 61.7 45 33.1

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.

American Falls monthly rainfall chart (mm) American Falls monthly rainfall chart (inches)
Average monthly rainfall in American Falls (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 22 18 22 23 32 26 14 16 17 20 22 23
inches 0.9 0.7 0.9 0.9 1.2 1 0.6 0.6 0.7 0.8 0.9 0.9
Rainy days 12 10 11 9 9 7 4 5 5 6 10 11

Average annual rainfall in American Falls: 184.833mm (72.8 inches)

Average daily sunshine

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

American Falls average daily sunshine chart
Average daily sunshine American Falls
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 4.5 6.3 8.1 9.4 10.6 12.2 13.3 12 10.6 8.5 4.9 4.2

Day / night temperatures

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

American Falls average minimum / maximum temperatures (Celsius) American Falls average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in American Falls (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -10.5 -7.8 -4.2 -0.9 3.3 7.5 10.3 9 4.2 -0.9 -4.7 -9.7
Max °C -0.1 3.6 8.4 14.3 19.6 25.1 30.3 29.4 23.6 16.9 7.5 0.9
Min °F 13.1 18.1 24.4 30.4 37.9 45.5 50.5 48.2 39.6 30.4 23.5 14.6
Max °F 22.5 28.2 35.8 44.1 52.5 61.3 68.5 66.6 57 46.4 34.5 24.1

Sea temperature

The graph below shows the average sea temperature.

American Falls average sea temperature chart (Celsius) American Falls average sea temperature chart (Fahrenheit)
Average sea temperature around American Falls in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 9.8 9.7 9.8 10.2 11.2 12.8 14.7 16.1 15.5 13.8 11.9 10.5
°F 49.6 49.4 49.6 50.3 52.1 55 58.4 60.9 60 56.8 53.4 50.8

Wind speed

The graph below shows the average wind speed.

American Falls average winspeed by month (km/h) American Falls average winspeed by month (mph)
Average wind speed in American Falls (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 16 17 18 19 17 16 15 15 15 15 16 16
mph 10 10 11 12 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.

American Falls relative humidity averages
Average relative humidity in American Falls
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
75% 72% 64% 54% 52% 48% 40% 40% 47% 55% 69% 75%