Fort Supply Oklahoma Climate Data

Monthly Average Climate Data for Fort Supply Oklahoma

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-5.7 °C9.4 °C20.32 mm
February-4.1 °C11.3 °C23.88 mm
March0.9 °C16.8 °C45.47 mm
April5.8 °C21.8 °C51.56 mm
May12 °C26.7 °C80.26 mm
June17.8 °C31.6 °C91.69 mm
July20.3 °C34.6 °C67.06 mm
August19.2 °C33.9 °C73.66 mm
September14.4 °C29.6 °C47.75 mm
October7.1 °C22.9 °C60.2 mm
November0.2 °C15.8 °C27.94 mm
December-4.8 °C9.7 °C27.18 mm
Annual6.9 °C22 °C616.97 mm

Climate Data for Fort Supply Oklahoma

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateMay 1 - May 10
Average Days With Frost100-125 Days
Plant Hardiness Zone - 2023Zone 7a : -17.8°C to -15°C
Plant Hardiness Zone - 2012Zone 6b : -20.6°C to -17.8°C
Current Drought ConditionsSevere Drought
Köppen Climate ClassificationCfa - Humid Subtropical Climate
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