Napavine Washington Climate Data

Monthly Average Climate Data for Napavine Washington

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January1.1 °C7.9 °C198.88 mm
February1 °C10.1 °C139.45 mm
March2.2 °C12.7 °C149.1 mm
April3.7 °C15.8 °C111.76 mm
May6.7 °C19.8 °C70.61 mm
June8.9 °C22.4 °C53.85 mm
July10.8 °C26.3 °C16.26 mm
August10.7 °C27.1 °C22.86 mm
September8.3 °C23.7 °C48.77 mm
October5.3 °C16.8 °C129.79 mm
November2.6 °C10.7 °C221.49 mm
December0.8 °C7.3 °C213.11 mm
Annual5.2 °C16.7 °C1375.93 mm

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 : -12.2°C to -9.4°C
Plant Hardiness Zone - 2012Zone 8a : -12.2°C to -9.4°C
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationCsb - Warm-Summer Mediterranean Climate