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Climate & Weather Averages in Duncan, Oklahoma, USA

Currently: 89 °F. Scattered clouds. (Weather station: Halliburton Field Airport, USA). See more current weather

Annual Weather Averages in Duncan

Based on weather reports collected during 1992–2021.

All Year Climate & Weather Averages in Duncan

High Temp: 97 °F

Low Temp: 27 °F

Mean Temp: 63 °F

Precipitation: 2.24"

Humidity: 62%

Dew Point: 48 °F

Wind: 15 mph

Pressure: 30.01 "Hg

Visibility: 10 mi

January Climate & Weather Averages in Duncan

High Temp: 53 °F

Low Temp: 27 °F

Mean Temp: 41 °F

Precipitation: 1.09"

Humidity: 62%

Dew Point: 28 °F

Wind: 14 mph

Pressure: 30.14 "Hg

Visibility: 10 mi

February Climate & Weather Averages in Duncan

High Temp: 58 °F

Low Temp: 31 °F

Mean Temp: 45 °F

Precipitation: 1.02"

Humidity: 62%

Dew Point: 31 °F

Wind: 16 mph

Pressure: 30.09 "Hg

Visibility: 10 mi

March Climate & Weather Averages in Duncan

High Temp: 67 °F

Low Temp: 41 °F

Mean Temp: 54 °F

Precipitation: 2.10"

Humidity: 60%

Dew Point: 39 °F

Wind: 17 mph

Pressure: 30.03 "Hg

Visibility: 10 mi

April Climate & Weather Averages in Duncan

High Temp: 75 °F

Low Temp: 48 °F

Mean Temp: 61 °F

Precipitation: 2.83"

Humidity: 62%

Dew Point: 47 °F

Wind: 18 mph

Pressure: 29.93 "Hg

Visibility: 10 mi

May Climate & Weather Averages in Duncan

High Temp: 83 °F

Low Temp: 59 °F

Mean Temp: 71 °F

Precipitation: 3.91"

Humidity: 66%

Dew Point: 59 °F

Wind: 17 mph

Pressure: 29.91 "Hg

Visibility: 10 mi

June Climate & Weather Averages in Duncan

High Temp: 92 °F

Low Temp: 68 °F

Mean Temp: 80 °F

Precipitation: 3.31"

Humidity: 63%

Dew Point: 65 °F

Wind: 16 mph

Pressure: 29.88 "Hg

Visibility: 10 mi

July Climate & Weather Averages in Duncan

High Temp: 97 °F

Low Temp: 72 °F

Mean Temp: 84 °F

Precipitation: 2.03"

Humidity: 57%

Dew Point: 67 °F

Wind: 14 mph

Pressure: 29.93 "Hg

Visibility: 11 mi

August Climate & Weather Averages in Duncan

High Temp: 97 °F

Low Temp: 71 °F

Mean Temp: 84 °F

Precipitation: 2.73"

Humidity: 56%

Dew Point: 65 °F

Wind: 13 mph

Pressure: 29.94 "Hg

Visibility: 10 mi

September Climate & Weather Averages in Duncan

High Temp: 88 °F

Low Temp: 63 °F

Mean Temp: 75 °F

Precipitation: 2.50"

Humidity: 61%

Dew Point: 60 °F

Wind: 13 mph

Pressure: 29.98 "Hg

Visibility: 10 mi

October Climate & Weather Averages in Duncan

High Temp: 77 °F

Low Temp: 50 °F

Mean Temp: 64 °F

Precipitation: 2.58"

Humidity: 62%

Dew Point: 49 °F

Wind: 15 mph

Pressure: 30.02 "Hg

Visibility: 10 mi

November Climate & Weather Averages in Duncan

High Temp: 65 °F

Low Temp: 38 °F

Mean Temp: 52 °F

Precipitation: 1.38"

Humidity: 63%

Dew Point: 38 °F

Wind: 14 mph

Pressure: 30.10 "Hg

Visibility: 10 mi

December Climate & Weather Averages in Duncan

High Temp: 55 °F

Low Temp: 29 °F

Mean Temp: 42 °F

Precipitation: 1.39"

Humidity: 65%

Dew Point: 30 °F

Wind: 13 mph

Pressure: 30.11 "Hg

Visibility: 10 mi

Quick Climate Info

Hottest MonthJuly (84 °F avg)
Coldest MonthJanuary (41 °F avg)
Wettest MonthMay (3.91" avg)
Windiest MonthApril (18 mph avg)
Annual precip.26.87" (per year)

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