Tumwater Washington Climate Data

Monthly Average Climate Data for Tumwater Washington

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January1.5 °C8.2 °C216.66 mm
February1.2 °C9.8 °C140.21 mm
March2.3 °C12.3 °C157.99 mm
April3.9 °C14.9 °C107.95 mm
May6.8 °C18.8 °C65.28 mm
June9.3 °C21.3 °C47.24 mm
July11.2 °C25.1 °C17.78 mm
August11.2 °C25.5 °C29.46 mm
September8.9 °C22.4 °C52.58 mm
October5.8 °C15.9 °C145.03 mm
November2.9 °C10.7 °C256.79 mm
December1.2 °C7.6 °C230.63 mm
Annual5.5 °C16 °C1467.6 mm

Climate Data for Tumwater Washington

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 21 - May 31
Average Days With Frost50-75 Days
Plant Hardiness Zone - 2023Zone 8b : -9.4°C to -6.7°C
Plant Hardiness Zone - 2012Zone 8a : -12.2°C to -9.4°C
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationCsb - Warm-Summer Mediterranean Climate
2024 plantmaps.com