Roslyn Washington Climate Data

Monthly Average Climate Data for Roslyn Washington

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January24.0 °F34.7 °F6.88 in.
February24.1 °F39.5 °F4.9 in.
March27.6 °F46.1 °F3.64 in.
April32.5 °F53.2 °F2.26 in.
May39.6 °F62.1 °F1.79 in.
June46.0 °F67.9 °F1.17 in.
July51.6 °F77.4 °F0.62 in.
August50.9 °F78.5 °F0.49 in.
September43.4 °F70.6 °F1.36 in.
October35.1 °F56.3 °F4.41 in.
November28.4 °F42.0 °F6.67 in.
December23.5 °F34.1 °F8.16 in.
Annual35.6 °F55.2 °F42.35 in.

Climate Data for Roslyn Washington

Average First Frost DateSep.11 - Sep. 20
Average Last Frost DateJun. 1 - Jun. 10
Average Days With Frost150-180 Days
Plant Hardiness Zone - 2023Zone 7a : 0°F to 5°F
Plant Hardiness Zone - 2012Zone 6b : -5°F to 0°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDsb - Humid Continental Climate - Dry Cool Summer