Steilacoom Washington Climate Data

Monthly Average Climate Data for Steilacoom Washington

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January35.0 °F47.1 °F6.17 in.
February34.7 °F49.8 °F4.13 in.
March37.0 °F54.0 °F4.7 in.
April40.2 °F58.8 °F3.33 in.
May45.7 °F65.8 °F2.25 in.
June50.4 °F70.2 °F1.59 in.
July53.9 °F76.6 °F0.54 in.
August54.0 °F77.3 °F1.05 in.
September49.7 °F71.6 °F1.52 in.
October43.5 °F60.2 °F4.12 in.
November38.0 °F51.6 °F6.55 in.
December34.5 °F46.1 °F6.38 in.
Annual43.1 °F60.8 °F42.33 in.

Climate Data for Steilacoom Washington

Average First Frost DateOct. 21 - Oct. 31
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 8b : 15°F to 20°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationCsb - Warm-Summer Mediterranean Climate