Castlewood (CO) monthly weather averages

Average daytime temperature

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

Castlewood average temperature chart (Celsius) Castlewood average temperature chart (Fahrenheit)
Average monthly temperatures in Castlewood (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 6.1 7.9 10.7 15.7 20.8 26.5 30 28.8 23.9 18.5 11.1 6.7
°F 42.9 46.2 51.2 60.3 69.4 79.8 86.1 83.8 75.1 65.4 52 44

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.

Castlewood monthly rainfall chart (mm) Castlewood monthly rainfall chart (inches)
Average monthly rainfall in Castlewood (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 12 18 34 41 69 42 59 48 31 24 22 15
inches 0.5 0.7 1.3 1.6 2.7 1.7 2.3 1.9 1.2 0.9 0.9 0.6
Rainy days 6 6 9 8 10 9 10 10 7 5 5 6

Average annual rainfall in Castlewood: 348.666mm (137.3 inches)

Average daily sunshine

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

Castlewood average daily sunshine chart
Average daily sunshine Castlewood
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 7.7 8.2 8.9 10 10.2 11.3 11.3 10.6 9.8 8.8 7.2 7.1

Day / night temperatures

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

Castlewood average minimum / maximum temperatures (Celsius) Castlewood average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Castlewood (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -9.5 -7.5 -4.7 0.1 5.1 9.9 13.2 12.2 7.3 1.3 -4.5 -8.5
Max °C 6.5 8.3 11.1 16.1 21.2 27 30.5 29.2 24.4 19 11.5 7.1
Min °F 15 18.6 23.6 32.2 41.1 49.7 55.7 54 45.1 34.3 23.9 16.8
Max °F 29.3 32.7 37.8 46.6 55.6 65.1 71.2 69.3 60.4 50.2 38.3 30.7

Sea temperature

The graph below shows the average sea temperature.

Castlewood average sea temperature chart (Celsius) Castlewood average sea temperature chart (Fahrenheit)
Average sea temperature around Castlewood in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 11 10.7 11.1 11.8 13.3 15.2 17.3 19.1 18.3 16 13.6 11.9
°F 51.7 51.3 51.9 53.3 55.9 59.3 63.2 66.4 65 60.7 56.6 53.4

Wind speed

The graph below shows the average wind speed.

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

Castlewood relative humidity averages
Average relative humidity in Castlewood
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
54% 55% 53% 49% 51% 48% 48% 50% 50% 48% 55% 56%

Other monthly averages

UV index Best time to go?

Castlewood weather stats

Castlewood weather statistics
Hottest month: July 30°C 86°F
Driest month: January 12mm 0.5ins
Sunniest month: September 9.8hrs
Coldest month: January 6.1°C 43°F
Wettest month: May 69mm 2.7ins
Warmest sea: August 19.1°C 66.4°F
Map showing location of Castlewood (39.58471, -104.90109) Castlewood map pin © Google

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