Shelby (MT) monthly weather averages

Contents

Average daytime temperature

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

Shelby average temperature chart (Celsius) Shelby average temperature chart (Fahrenheit)
Average monthly temperatures in Shelby (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C -1.8 1.4 5.1 11.8 17.6 22.5 26.4 26 19.6 14 4.7 -1
°F 28.8 34.5 41.1 53.2 63.6 72.4 79.6 78.7 67.3 57.2 40.5 30.3

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.

Shelby monthly rainfall chart (mm) Shelby monthly rainfall chart (inches)
Average monthly rainfall in Shelby (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 12 8 14 28 52 69 36 39 28 12 10 12
inches 0.5 0.3 0.6 1.1 2 2.7 1.4 1.5 1.1 0.5 0.4 0.5
Rainy days 7 5 6 7 9 9 6 7 6 4 5 7

Average annual rainfall in Shelby: 255.366mm (100.5 inches)

Average daily sunshine

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

Shelby average daily sunshine chart
Average daily sunshine Shelby
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 3.8 5.2 6.6 7.9 9.3 10.6 12.6 10.9 8.2 6.5 4.3 3.4

Day / night temperatures

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

Shelby average minimum / maximum temperatures (Celsius) Shelby average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Shelby (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -12.5 -10.1 -6.4 -1.1 4.1 8.6 10.8 10.3 5.3 0.7 -6.2 -11.5
Max °C -1.5 1.7 5.4 12.1 17.9 22.8 26.8 26.4 20 14.4 5 -0.7
Min °F 9.5 13.9 20.6 30 39.4 47.5 51.4 50.5 41.5 33.2 20.8 11.3
Max °F 19.4 24.4 31.1 41.9 51.8 60.3 65.8 64.9 54.7 45.5 30.9 21

Sea temperature

The graph below shows the average sea temperature.

Shelby average sea temperature chart (Celsius) Shelby average sea temperature chart (Fahrenheit)
Average sea temperature around Shelby in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 6.6 6.5 6.7 7.1 8.1 9.8 11.8 13.6 12.9 10.6 8.5 7.1
°F 43.9 43.7 44 44.8 46.6 49.7 53.3 56.4 55.1 51.1 47.3 44.8

Wind speed

The graph below shows the average wind speed.

Shelby average winspeed by month (km/h) Shelby average winspeed by month (mph)
Average wind speed in Shelby (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 20 19 18 19 18 17 16 15 16 18 19 20
mph 12 12 11 12 11 11 10 9 10 11 12 12

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.

Shelby relative humidity averages
Average relative humidity in Shelby
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
68% 67% 65% 57% 55% 55% 51% 52% 57% 57% 66% 69%

Other monthly averages

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Beta

Current (hourly) weather 15 day forecast

Shelby weather stats

Shelby weather statistics
Hottest month: July 26.4°C 79.5°F
Driest month: February 8mm 0.3ins
Sunniest month: July 12.6hrs
Coldest month: January -1.8°C 28.8°F
Wettest month: June 69mm 2.7ins
Warmest sea: August 13.6°C 56.5°F
Map showing location of Shelby (48.50526, -111.85697) Shelby map pin © Google

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