Helena Valley West Central (MT) monthly weather averages

Contents

Average daytime temperature

The bar chart below shows the average monthly peak daytime temperatures at Helena Valley West Central

Helena Valley West Central average temperature chart (Celsius) Helena Valley West Central average temperature chart (Fahrenheit)
Average monthly temperatures in Helena Valley West Central (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C -1.3 2.2 6.1 12 17.3 22.8 27.9 27.1 20 14 5.2 -0.5
°F 29.6 35.9 43.1 53.5 63.1 73.1 82.3 80.7 67.9 57.3 41.3 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.

Helena Valley West Central monthly rainfall chart (mm) Helena Valley West Central monthly rainfall chart (inches)
Average monthly rainfall in Helena Valley West Central (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 17 12 21 28 51 55 33 34 30 19 16 16
inches 0.7 0.5 0.8 1.1 2 2.2 1.3 1.3 1.2 0.7 0.6 0.6
Rainy days 9 7 10 9 11 10 7 8 8 6 8 9

Average annual rainfall in Helena Valley West Central: 264.8mm (104.3 inches)

Average daily sunshine

The bar chart below shows the average daily sunshine hours in Helena Valley West Central

Helena Valley West Central average daily sunshine chart
Average daily sunshine Helena Valley West Central
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 4.4 5.9 7.9 8.7 9.6 11 12.8 11.2 9.1 7.2 4.4 3.7

Day / night temperatures

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

Helena Valley West Central average minimum / maximum temperatures (Celsius) Helena Valley West Central average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Helena Valley West Central (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -12.8 -9.7 -6.3 -1.7 3.2 7.8 10.5 9.5 4.1 -0.8 -6.9 -12
Max °C -1.1 2.5 6.5 12.3 17.6 23.2 28.4 27.5 20.4 14.4 5.5 -0.3
Min °F 9.1 14.6 20.8 28.9 37.8 46 50.8 49.1 39.3 30.6 19.7 10.5
Max °F 19.6 25.5 32.2 41.5 50.7 59.9 66.9 65.3 54 44.2 30.7 21

Sea temperature

The graph below shows the average sea temperature.

Helena Valley West Central average sea temperature chart (Celsius) Helena Valley West Central average sea temperature chart (Fahrenheit)
Average sea temperature around Helena Valley West Central in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 7.7 7.6 7.8 8.2 9.2 10.8 12.8 14.3 13.7 11.7 9.7 8.3
°F 45.9 45.7 46 46.8 48.5 51.5 55 57.8 56.7 53 49.4 46.9

Wind speed

The graph below shows the average wind speed.

Helena Valley West Central average winspeed by month (km/h) Helena Valley West Central average winspeed by month (mph)
Average wind speed in Helena Valley West Central (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 14 14 16 17 16 15 14 13 14 14 14 14
mph 9 9 10 11 10 9 9 8 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.

Helena Valley West Central relative humidity averages
Average relative humidity in Helena Valley West Central
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
67% 65% 61% 54% 55% 53% 47% 48% 55% 58% 66% 69%

Other monthly averages

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Helena Valley West Central weather stats

Helena Valley West Central weather statistics
Hottest month: July 27.9°C 82.2°F
Driest month: February 12mm 0.5ins
Sunniest month: July 12.8hrs
Coldest month: January -1.3°C 29.7°F
Wettest month: June 55mm 2.2ins
Warmest sea: August 14.3°C 57.7°F
Map showing location of Helena Valley West Central (46.66291, -112.06044) Helena Valley West Central map pin © Google

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