Sedro-Woolley Washington Climate Data

Monthly Average Climate Data for Sedro-Woolley Washington

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January35.0 °F46.4 °F5.93 in.
February34.8 °F48.6 °F3.95 in.
March37.5 °F52.6 °F4.65 in.
April40.8 °F58.2 °F4.05 in.
May45.6 °F64.9 °F3.18 in.
June49.9 °F69.0 °F2.55 in.
July52.3 °F74.6 °F1.22 in.
August52.1 °F75.6 °F1.45 in.
September48.6 °F69.7 °F2.8 in.
October42.8 °F59.9 °F4.72 in.
November38.3 °F51.0 °F6.98 in.
December34.5 °F45.4 °F5.16 in.
Annual42.7 °F59.7 °F46.64 in.

Climate Data for Sedro-Woolley 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 8b : 15°F to 20°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationCsb - Warm-Summer Mediterranean Climate