Derby (CT) monthly weather averages

Contents

Average daytime temperature

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

Derby average temperature chart (Celsius) Derby average temperature chart (Fahrenheit)
Average monthly temperatures in Derby (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 1.6 2.6 7.6 13.6 19.2 24.4 27.3 26.7 23 17.3 11.1 4.3
°F 35 36.8 45.7 56.4 66.6 75.9 81.1 80 73.4 63.1 52 39.7

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.

Derby monthly rainfall chart (mm) Derby monthly rainfall chart (inches)
Average monthly rainfall in Derby (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 82 79 100 100 94 76 91 98 86 88 102 96
inches 3.2 3.1 3.9 3.9 3.7 3 3.6 3.9 3.4 3.5 4 3.8
Rainy days 10 10 11 10 11 11 9 9 8 7 11 12

Average annual rainfall in Derby: 1060.467mm (417.5 inches)

Average daily sunshine

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

Derby average daily sunshine chart
Average daily sunshine Derby
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 6 6.8 7.7 8.4 9 9.6 9.6 9.1 8 7.3 5.4 5.1

Day / night temperatures

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

Derby average minimum / maximum temperatures (Celsius) Derby average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Derby (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -6.7 -5.9 -1.5 3.4 8.9 14.2 17.5 17.1 13 7.1 2.3 -3.7
Max °C 1.9 2.9 7.9 13.8 19.5 24.7 27.5 26.9 23.3 17.6 11.4 4.5
Min °F 20 21.5 29.4 38.1 48 57.5 63.5 62.8 55.3 44.7 36.1 25.3
Max °F 27.7 29.3 37.8 47.5 57.6 66.9 72.5 71.6 64.6 54.1 44.2 32.7

Sea temperature

The graph below shows the average sea temperature.

Derby average sea temperature chart (Celsius) Derby average sea temperature chart (Fahrenheit)
Average sea temperature around Derby in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 6.2 4.3 4.2 6.2 10.5 16.2 21 22.1 20 16.1 12.3 9
°F 43.1 39.7 39.5 43.2 51 61.2 69.9 71.8 68 61.1 54.1 48.2

Wind speed

The graph below shows the average wind speed.

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

Derby relative humidity averages
Average relative humidity in Derby
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
66% 66% 65% 63% 69% 72% 72% 74% 74% 70% 70% 69%

Other monthly averages

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Derby weather stats

Derby weather statistics
Hottest month: July 27.3°C 81.1°F
Driest month: June 76mm 3ins
Sunniest month: August 9.1hrs
Coldest month: January 1.6°C 34.9°F
Wettest month: November 102mm 4ins
Warmest sea: August 22.1°C 71.8°F
Map showing location of Derby (41.32065, -73.089) Derby map pin © Google

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