Shoreline Washington Climate Data

Monthly Average Climate Data for Shoreline Washington

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January35.9 °F46.2 °F5.25 in.
February35.8 °F48.6 °F3.86 in.
March38.2 °F52.5 °F4.15 in.
April41.4 °F57.7 °F3.33 in.
May46.6 °F64.7 °F2.13 in.
June50.5 °F68.7 °F1.8 in.
July54.2 °F74.9 °F0.84 in.
August54.8 °F75.5 °F1.01 in.
September51.3 °F69.4 °F1.8 in.
October45.2 °F59.7 °F3.93 in.
November39.0 °F50.5 °F6.39 in.
December35.6 °F45.5 °F5.54 in.
Annual44 °F59.5 °F40.03 in.

Climate Data for Shoreline Washington

Average First Frost DateNov. 11 - Nov. 20
Average Last Frost DateApr. 1 - Apr. 10
Average Days With Frost30-40 Days
Plant Hardiness Zone - 2023Zone 9a : 20°F to 25°F
Plant Hardiness Zone - 2012Zone 8b : 15°F to 20°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationCsb - Warm-Summer Mediterranean Climate