Custer (SD) monthly weather averages

Contents

Average daytime temperature

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

Custer average temperature chart (Celsius) Custer average temperature chart (Fahrenheit)
Average monthly temperatures in Custer (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 0.1 2.4 6.3 12.5 18.3 23.9 28.3 27.3 21.5 15.1 6.3 1.1
°F 32.3 36.3 43.3 54.5 64.9 75 83 81.2 70.6 59.2 43.4 34

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.

Custer monthly rainfall chart (mm) Custer monthly rainfall chart (inches)
Average monthly rainfall in Custer (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 10 14 23 45 76 75 59 42 32 24 14 12
inches 0.4 0.5 0.9 1.8 3 3 2.3 1.6 1.3 1 0.6 0.5
Rainy days 8 8 10 10 12 12 10 9 8 6 7 8

Average annual rainfall in Custer: 366.567mm (144.3 inches)

Average daily sunshine

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

Custer average daily sunshine chart
Average daily sunshine Custer
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 6.1 7.1 8.1 8.8 9.3 10.9 11.4 10.8 9.2 7.8 5.8 5.7

Day / night temperatures

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

Custer average minimum / maximum temperatures (Celsius) Custer average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Custer (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -12.5 -10.5 -7 -1.7 4 9 12.7 11.3 5.6 -0.1 -6.5 -11.4
Max °C 0.5 2.7 6.6 12.9 18.6 24.3 28.7 27.7 21.9 15.5 6.7 1.4
Min °F 9.6 13.1 19.4 29 39.2 48.1 54.9 52.3 42 31.8 20.4 11.5
Max °F 21.2 25 31.6 42.1 52.3 61.9 69.3 67.1 56.7 45.9 32.2 23

Sea temperature

The graph below shows the average sea temperature.

Custer average sea temperature chart (Celsius) Custer average sea temperature chart (Fahrenheit)
Average sea temperature around Custer in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 8.6 8.4 8.7 9.5 10.8 12.7 15 17.1 16.3 13.6 11.1 9.4
°F 47.5 47.2 47.7 49 51.4 54.8 59 62.8 61.3 56.5 52 49

Wind speed

The graph below shows the average wind speed.

Custer average winspeed by month (km/h) Custer average winspeed by month (mph)
Average wind speed in Custer (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 21 20 22 22 21 18 17 17 18 19 19 20
mph 13 13 14 14 13 11 11 11 11 12 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.

Custer relative humidity averages
Average relative humidity in Custer
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
63% 64% 63% 58% 60% 61% 56% 54% 55% 56% 62% 65%

Other monthly averages

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Beta

Current (hourly) weather 15 day forecast

Custer weather stats

Custer weather statistics
Hottest month: July 28.3°C 82.9°F
Driest month: January 10mm 0.4ins
Sunniest month: August 10.8hrs
Coldest month: January 0.1°C 32.2°F
Wettest month: May 76mm 3ins
Warmest sea: August 17.1°C 62.8°F
Map showing location of Custer (43.76665, -103.59881) Custer map pin © Google

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