Montana monthly weather averages

Contents

Average daytime temperature

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

Montana average temperature chart (Celsius) Montana average temperature chart (Fahrenheit)
Average monthly temperatures in Montana (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 1.5 4.6 10.1 17 21.9 25.3 27.7 27.4 23.8 17.2 10.2 3.8
°F 34.7 40.3 50.2 62.6 71.4 77.5 81.8 81.3 74.8 63 50.4 38.9

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.

Montana monthly rainfall chart (mm) Montana monthly rainfall chart (inches)
Average monthly rainfall in Montana (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 41 42 47 57 77 76 59 44 43 43 54 49
inches 1.6 1.6 1.8 2.2 3 3 2.3 1.7 1.7 1.7 2.1 1.9
Rainy days 7 8 7 9 10 9 6 5 5 5 8 8

Average annual rainfall in Montana: 697.067mm (274.4 inches)

Average daily sunshine

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

Montana average daily sunshine chart
Average daily sunshine Montana
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 2.4 3.2 4.5 6.3 7.9 9.3 10.3 9.7 7.8 5.6 3.3 2.4

Day / night temperatures

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

Montana average minimum / maximum temperatures (Celsius) Montana average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Montana (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -4.7 -2 1.3 6.8 11.5 14.5 16.1 16 11.5 7.2 3 -0.8
Max °C 1.7 4.8 10.3 17.3 22.2 25.6 28 27.7 24.1 17.5 10.4 4
Min °F 23.6 28.5 34.3 44.2 52.6 58 60.9 60.7 52.7 44.9 37.4 30.7
Max °F 29.3 34.5 42.4 53.6 62.2 68 71.6 71.2 64 54.1 44.1 34.9

Sea temperature

The graph below shows the average sea temperature.

Montana average sea temperature chart (Celsius) Montana average sea temperature chart (Fahrenheit)
Average sea temperature around Montana in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 10.6 9.9 10.3 12.1 16.3 21 23.9 24.8 22.5 18.9 15.2 12.4
°F 51 49.8 50.5 53.8 61.4 69.8 75 76.7 72.5 66 59.4 54.2

Wind speed

The graph below shows the average wind speed.

Montana average winspeed by month (km/h) Montana average winspeed by month (mph)
Average wind speed in Montana (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 9 9 10 10 9 9 9 8 8 8 8 8
mph 6 6 6 6 5 6 5 5 5 5 5 5

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.

Montana relative humidity averages
Average relative humidity in Montana
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
81% 79% 73% 68% 70% 71% 68% 68% 70% 76% 81% 82%

Other monthly averages

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Beta

Current (hourly) weather 15 day forecast

Montana weather stats

Montana weather statistics
Hottest month: July 27.7°C 81.9°F
Driest month: January 41mm 1.6ins
Sunniest month: August 9.7hrs
Coldest month: January 1.5°C 34.7°F
Wettest month: May 77mm 3ins
Warmest sea: August 24.8°C 76.6°F
Map showing location of Montana (43.4125, 23.225) Montana map pin © Google

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