Ilwaco Washington Climate Data

Monthly Average Climate Data for Ilwaco Washington

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January3.8 °C9.5 °C309.88 mm
February3.7 °C10.4 °C201.93 mm
March4.6 °C11.7 °C223.01 mm
April5.4 °C13.2 °C168.66 mm
May8.1 °C15.5 °C97.54 mm
June9.8 °C17.2 °C68.83 mm
July12.2 °C19 °C26.67 mm
August11.9 °C19.8 °C40.13 mm
September10.8 °C19.6 °C68.58 mm
October7.9 °C16.1 °C194.06 mm
November5.9 °C12 °C307.85 mm
December3.6 °C9.2 °C319.28 mm
Annual7.3 °C14.4 °C2026.42 mm

Climate Data for Ilwaco Washington

Average First Frost DateNov. 1 - Nov. 10
Average Last Frost DateApr. 21 - Apr. 30
Average Days With Frost40-50 Days
Plant Hardiness Zone - 2023Zone 9a : -6.7°C to -3.9°C
Plant Hardiness Zone - 2012Zone 8b : -9.4°C to -6.7°C
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationCsb - Warm-Summer Mediterranean Climate