East Cathlamet Washington Climate Data

Monthly Average Climate Data for East Cathlamet Washington

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January34.1 °F47.1 °F11.3 in.
February33.5 °F50.3 °F7.56 in.
March35.4 °F53.9 °F8.16 in.
April38.2 °F58.1 °F6.52 in.
May43.2 °F64.1 °F3.45 in.
June47.5 °F67.2 °F2.41 in.
July51.0 °F73.2 °F0.84 in.
August51.0 °F74.2 °F1.24 in.
September47.4 °F71.9 °F3.06 in.
October41.6 °F62.6 °F7.05 in.
November36.6 °F51.9 °F11.98 in.
December33.7 °F46.2 °F12.32 in.
Annual41.1 °F60.1 °F75.89 in.

Climate Data for East Cathlamet Washington

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 1 - May 10
Average Days With Frost40-50 Days
Plant Hardiness Zone - 2023Zone 8b : 15°F to 20°F
Plant Hardiness Zone - 2012Zone 8b : 15°F to 20°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationCsb - Warm-Summer Mediterranean Climate
2025 plantmaps.com