Snoqualmie Pass Washington Climate Data

Monthly Average Climate Data for Snoqualmie Pass Washington

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January26.2 °F35.4 °F14.57 in.
February26.6 °F38.5 °F8.66 in.
March28.7 °F43.3 °F11.42 in.
April32.2 °F48.4 °F6.61 in.
May37.7 °F56.8 °F3.95 in.
June42.9 °F62.5 °F2.78 in.
July48.8 °F71.6 °F1.47 in.
August49.3 °F72.6 °F1.6 in.
September44.4 °F65.9 °F4.16 in.
October37.5 °F52.9 °F7.93 in.
November30.8 °F40.6 °F13.83 in.
December25.7 °F34.0 °F11.93 in.
Annual35.9 °F51.9 °F88.91 in.

Climate Data for Snoqualmie Pass Washington

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 21 - May 31
Average Days With Frost150-180 Days
Plant Hardiness Zone - 2023Zone 7b : 5°F to 10°F
Plant Hardiness Zone - 2012Zone 7a : 0°F to 5°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDsc - Continental Subarctic - Cold Dry Summer