Bellingham Washington Climate Data

Monthly Average Climate Data for Bellingham Washington

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January34.9 °F45.8 °F4.97 in.
February35.2 °F48.1 °F3.18 in.
March37.8 °F52.1 °F3.78 in.
April41.3 °F58.0 °F2.96 in.
May46.1 °F64.2 °F2.37 in.
June50.5 °F68.4 °F1.76 in.
July53.1 °F73.5 °F1.04 in.
August53.1 °F73.8 °F1.05 in.
September49.5 °F68.5 °F2.01 in.
October44.1 °F59.3 °F3.91 in.
November38.8 °F50.5 °F5.65 in.
December34.8 °F45.1 °F4.64 in.
Annual43.3 °F58.9 °F37.32 in.

Climate Data for Bellingham Washington

Average First Frost DateNov. 1 - Nov. 10
Average Last Frost DateApr. 21 - Apr. 30
Average Days With Frost40-50 Days
Plant Hardiness Zone - 2023Zone 8b : 15°F to 20°F
Plant Hardiness Zone - 2012Zone 8a : 10°F to 15°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationCsb - Warm-Summer Mediterranean Climate