Bozeman (MT) monthly weather averages

Average daytime temperature

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

Bozeman average temperature chart (Celsius) Bozeman average temperature chart (Fahrenheit)
Average monthly temperatures in Bozeman (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C -1.4 2.2 5.6 11.7 17.3 22.5 27.7 26.9 19.9 13.9 4.8 -0.6
°F 29.4 35.9 42.1 53.1 63.1 72.6 81.8 80.5 67.9 57.1 40.7 31

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.

Bozeman monthly rainfall chart (mm) Bozeman monthly rainfall chart (inches)
Average monthly rainfall in Bozeman (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 29 22 38 48 79 75 37 40 49 40 33 25
inches 1.2 0.8 1.5 1.9 3.1 3 1.5 1.6 1.9 1.6 1.3 1
Rainy days 9 8 10 9 11 10 7 7 7 6 7 9

Average annual rainfall in Bozeman: 449.967mm (177.2 inches)

Average daily sunshine

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

Bozeman average daily sunshine chart
Average daily sunshine Bozeman
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 4.8 6.3 8.4 9.1 10 11.3 12.8 11.5 9.5 7.5 4.8 4.2

Day / night temperatures

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

Bozeman average minimum / maximum temperatures (Celsius) Bozeman average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Bozeman (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -12.7 -9.3 -6.3 -1.5 3.2 7.3 10.3 9.5 4.3 -0.5 -6.5 -11.5
Max °C -1.2 2.5 5.9 12.1 17.6 22.9 28.1 27.4 20.3 14.3 5.1 -0.3
Min °F 9.2 15.4 20.7 29.4 37.8 45.1 50.5 49 39.7 31.1 20.3 11.3
Max °F 19.6 25.9 31.6 41.5 50.7 59.2 66.6 65.1 54.1 44.4 30.7 21.4

Sea temperature

The graph below shows the average sea temperature.

Bozeman average sea temperature chart (Celsius) Bozeman average sea temperature chart (Fahrenheit)
Average sea temperature around Bozeman in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 8.2 8 8.2 8.7 9.7 11.3 13.3 14.9 14.3 12.2 10.2 8.8
°F 46.7 46.5 46.7 47.6 49.4 52.4 56 58.8 57.7 54 50.3 47.8

Wind speed

The graph below shows the average wind speed.

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

Bozeman relative humidity averages
Average relative humidity in Bozeman
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
65% 63% 60% 54% 54% 51% 45% 45% 52% 55% 63% 66%