Twin Falls (ID) monthly weather averages

Average daytime temperature

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

Twin Falls average temperature chart (Celsius) Twin Falls average temperature chart (Fahrenheit)
Average monthly temperatures in Twin Falls (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 1.7 5.5 10.5 15.7 21.1 26.5 31.6 30.4 24.4 17.8 8.7 2.7
°F 35 42 50.9 60.3 70 79.8 88.9 86.7 76 64 47.7 36.9

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.

Twin Falls monthly rainfall chart (mm) Twin Falls monthly rainfall chart (inches)
Average monthly rainfall in Twin Falls (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 30 20 21 20 27 24 8 12 15 18 28 28
inches 1.2 0.8 0.8 0.8 1.1 0.9 0.3 0.5 0.6 0.7 1.1 1.1
Rainy days 11 9 10 9 8 6 4 4 5 5 10 11

Average annual rainfall in Twin Falls: 178.866mm (70.4 inches)

Average daily sunshine

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

Twin Falls average daily sunshine chart
Average daily sunshine Twin Falls
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 4.6 6.3 8.3 9.7 11.1 12.4 13.6 12.2 10.8 8.6 5 4.3

Day / night temperatures

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

Twin Falls average minimum / maximum temperatures (Celsius) Twin Falls average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Twin Falls (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -7.5 -4.8 -2 0.9 5.1 9.5 13 12.2 7 1.9 -2.4 -6.8
Max °C 1.9 5.8 10.8 16.1 21.5 27 32.1 30.9 24.9 18.2 9 3
Min °F 18.5 23.4 28.4 33.6 41.2 49 55.3 53.9 44.5 35.3 27.7 19.9
Max °F 27 32.9 39.9 47.3 55.9 64.8 72.5 70.7 60.6 50 37.9 28.6

Sea temperature

The graph below shows the average sea temperature.

Twin Falls average sea temperature chart (Celsius) Twin Falls average sea temperature chart (Fahrenheit)
Average sea temperature around Twin Falls in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 9.9 9.8 9.9 10.2 11.1 12.6 14.5 15.7 15.2 13.7 11.9 10.6
°F 49.9 49.6 49.8 50.4 52 54.7 58 60.2 59.4 56.6 53.5 51

Wind speed

The graph below shows the average wind speed.

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

Twin Falls relative humidity averages
Average relative humidity in Twin Falls
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
75% 71% 63% 54% 51% 46% 37% 38% 45% 54% 68% 75%