Bellevue Washington Climate Data

Monthly Average Climate Data for Bellevue Washington

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January2.3 °C8.4 °C143.51 mm
February2.4 °C9.9 °C103.12 mm
March3.7 °C12.1 °C110.74 mm
April5.6 °C14.9 °C86.87 mm
May8.6 °C18.7 °C57.15 mm
June11.1 °C21.1 °C53.59 mm
July13 °C24.7 °C20.83 mm
August13.1 °C25.1 °C26.67 mm
September11 °C21.8 °C46.74 mm
October7.6 °C15.8 °C108.2 mm
November4.3 °C10.9 °C159.77 mm
December2.2 °C7.9 °C154.69 mm
Annual7.1 °C15.9 °C1071.88 mm

Climate Data for Bellevue Washington

Average First Frost DateNov. 11 - Nov. 20
Average Last Frost DateMar. 21 - Mar. 31
Average Days With Frost20-30 Days
Plant Hardiness Zone - 2023Zone 9a : -6.7°C to -3.9°C
Plant Hardiness Zone - 2012Zone 8b : -9.4°C to -6.7°C
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationCsb - Warm-Summer Mediterranean Climate
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