Sultan Washington Climate Data

Monthly Average Climate Data for Sultan Washington

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January1.6 °C8.1 °C187.45 mm
February1.7 °C9.8 °C130.05 mm
March2.9 °C12.1 °C141.48 mm
April4.9 °C15.1 °C123.95 mm
May7.8 °C18.9 °C92.71 mm
June10.2 °C21.1 °C79.25 mm
July11.9 °C24.9 °C31.5 mm
August11.9 °C25.4 °C35.31 mm
September9.7 °C22.1 °C73.66 mm
October6.4 °C16.1 °C146.3 mm
November3.4 °C10.7 °C198.12 mm
December1.4 °C7.6 °C185.67 mm
Annual6.2 °C16 °C1425.45 mm

Climate Data for Sultan Washington

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateApr. 21 - Apr. 30
Average Days With Frost50-75 Days
Plant Hardiness Zone - 2023Zone 8b : -9.4°C to -6.7°C
Plant Hardiness Zone - 2012Zone 8b : -9.4°C to -6.7°C
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationCsb - Warm-Summer Mediterranean Climate