Currently: 63 °F. Low clouds. (Weather station: Halliburton Field Airport, USA). See more current weatherAnnual 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