Napavine Washington Climate Data

Monthly Average Climate Data for Napavine Washington

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January34.0 °F46.2 °F7.83 in.
February33.8 °F50.2 °F5.49 in.
March35.9 °F54.8 °F5.87 in.
April38.7 °F60.5 °F4.4 in.
May44.1 °F67.7 °F2.78 in.
June48.1 °F72.3 °F2.12 in.
July51.5 °F79.3 °F0.64 in.
August51.3 °F80.7 °F0.9 in.
September46.9 °F74.7 °F1.92 in.
October41.5 °F62.3 °F5.11 in.
November36.7 °F51.3 °F8.72 in.
December33.5 °F45.1 °F8.39 in.
Annual41.3 °F62.1 °F54.17 in.

Climate Data for Napavine Washington

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateMay 11 - May 20
Average Days With Frost50-75 Days
Plant Hardiness Zone - 2023Zone 8a : 10°F to 15°F
Plant Hardiness Zone - 2012Zone 8a : 10°F to 15°F
Current Drought ConditionsNormal
Köppen Climate ClassificationCsb - Warm-Summer Mediterranean Climate