Duncan Oklahoma Climate Data

Monthly Average Climate Data for Duncan Oklahoma

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-2.1 °C11.4 °C36.83 mm
February-0.1 °C13.6 °C44.45 mm
March4.8 °C18.6 °C68.07 mm
April9.2 °C22.9 °C85.85 mm
May14.9 °C27.2 °C130.3 mm
June19.9 °C31.8 °C111 mm
July22 °C34.8 °C62.74 mm
August21.5 °C34.9 °C71.63 mm
September17.2 °C30.2 °C94.74 mm
October10.4 °C24.3 °C93.73 mm
November4.1 °C17.7 °C57.15 mm
December-0.9 °C12 °C51.05 mm
Annual10.1 °C23.3 °C907.54 mm

Climate Data for Duncan Oklahoma

Average First Frost DateNov. 1 - Nov. 10
Average Last Frost DateApr. 11 - Apr. 20
Average Days With Frost50-75 Days
Plant Hardiness Zone - 2023Zone 8a : -12.2°C to -9.4°C
Plant Hardiness Zone - 2012Zone 7b : -15°C to -12.2°C
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationCfa - Humid Subtropical Climate
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