Stillwater Oklahoma Climate Data

Monthly Average Climate Data for Stillwater Oklahoma

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-4 °C9.4 °C33.27 mm
February-2.1 °C11.4 °C37.59 mm
March2.6 °C16.8 °C67.56 mm
April7.7 °C21.9 °C100.33 mm
May13.8 °C26.3 °C122.94 mm
June19.2 °C31.1 °C118.11 mm
July21.6 °C34.1 °C87.12 mm
August20.6 °C33.9 °C83.06 mm
September15.8 °C29.7 °C84.58 mm
October8.8 °C23.2 °C83.06 mm
November2.4 °C16.4 °C53.85 mm
December-2.8 °C10.1 °C42.42 mm
Annual8.6 °C22 °C913.89 mm

Climate Data for Stillwater Oklahoma

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateApr. 11 - Apr. 20
Average Days With Frost75-100 Days
Plant Hardiness Zone - 2023Zone 7a : -17.8°C to -15°C
Plant Hardiness Zone - 2012Zone 7a : -17.8°C to -15°C
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationCfa - Humid Subtropical Climate
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