Duncan (OK) monthly weather averages

Contents

Average daytime temperature

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

Duncan average temperature chart (Celsius) Duncan average temperature chart (Fahrenheit)
Average monthly temperatures in Duncan (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 9.7 12.7 17.7 23 27 31.2 34.5 34.1 29.2 23.9 16.8 11.2
°F 49.4 54.8 63.9 73.4 80.7 88.2 94.2 93.3 84.6 75.1 62.2 52.2

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.

Duncan monthly rainfall chart (mm) Duncan monthly rainfall chart (inches)
Average monthly rainfall in Duncan (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 25 37 54 66 124 89 55 55 81 78 42 38
inches 1 1.4 2.1 2.6 4.9 3.5 2.2 2.2 3.2 3.1 1.6 1.5
Rainy days 5 6 7 7 9 7 6 6 7 6 5 6

Average annual rainfall in Duncan: 679.366mm (267.5 inches)

Average daily sunshine

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

Duncan average daily sunshine chart
Average daily sunshine Duncan
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 7 7.3 8.5 9.5 10 11.4 12.1 11.2 9.3 8.5 6.9 6.5

Day / night temperatures

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

Duncan average minimum / maximum temperatures (Celsius) Duncan average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Duncan (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -3.4 -0.8 4.2 9.9 14.7 19.1 21.6 20.8 16.9 10.6 4.1 -1.4
Max °C 10 13 18.1 23.3 27.4 31.5 34.9 34.4 29.6 24.3 17.1 11.6
Min °F 25.9 30.6 39.5 49.8 58.4 66.4 70.8 69.4 62.3 51 39.4 29.6
Max °F 37.9 43 52 61.9 69.8 77.5 82.8 81.7 73.8 63.3 51.1 41.2

Sea temperature

The graph below shows the average sea temperature.

Duncan average sea temperature chart (Celsius) Duncan average sea temperature chart (Fahrenheit)
Average sea temperature around Duncan in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 13.8 13.5 14.1 15.6 17.8 20.2 22.4 24.1 23 20 17.3 15.2
°F 56.8 56.3 57.4 60 64 68.4 72.4 75.3 73.4 68.1 63.1 59.3

Wind speed

The graph below shows the average wind speed.

Duncan average winspeed by month (km/h) Duncan average winspeed by month (mph)
Average wind speed in Duncan (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 20 21 23 23 21 19 18 17 18 19 20 20
mph 12 13 14 14 13 12 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.

Duncan relative humidity averages
Average relative humidity in Duncan
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
67% 66% 61% 62% 67% 66% 59% 60% 67% 65% 67% 68%

Other monthly averages

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Duncan weather stats

Duncan weather statistics
Hottest month: July 34.5°C 94.1°F
Driest month: January 25mm 1ins
Sunniest month: July 12.1hrs
Coldest month: January 9.7°C 49.5°F
Wettest month: May 124mm 4.9ins
Warmest sea: August 24.1°C 75.4°F
Map showing location of Duncan (34.5023, -97.95781) Duncan map pin © Google

Locations nearby

Top United States locations