Stevenson Washington Climate Data

Monthly Average Climate Data for Stevenson Washington

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January34.9 °F43.6 °F11.58 in.
February35.7 °F48.3 °F8.23 in.
March38.2 °F54.4 °F9.16 in.
April42.0 °F60.2 °F6.34 in.
May47.5 °F67.7 °F3.75 in.
June52.3 °F72.5 °F2.45 in.
July56.7 °F80.4 °F0.6 in.
August56.6 °F81.5 °F0.67 in.
September51.5 °F75.7 °F2.37 in.
October45.5 °F63.8 °F7.27 in.
November39.6 °F51.1 °F11.97 in.
December35.1 °F43.6 °F13.68 in.
Annual44.6 °F61.9 °F78.07 in.

Climate Data for Stevenson Washington

Average First Frost DateNov. 1 - Nov. 10
Average Last Frost DateApr. 21 - Apr. 30
Average Days With Frost50-75 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