Cathlamet Washington Climate Data

Monthly Average Climate Data for Cathlamet Washington

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January35.3 °F47.5 °F11.21 in.
February34.6 °F50.3 °F7.03 in.
March36.6 °F53.7 °F7.76 in.
April39.4 °F58.8 °F6.53 in.
May44.3 °F64.2 °F3.13 in.
June48.6 °F67.7 °F2.19 in.
July52.1 °F73.0 °F0.79 in.
August52.2 °F74.4 °F1.18 in.
September48.5 °F72.0 °F2.72 in.
October42.7 °F62.6 °F6.46 in.
November37.8 °F52.3 °F12.09 in.
December34.8 °F46.9 °F12.55 in.
Annual42.2 °F60.3 °F73.64 in.

Climate Data for Cathlamet 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 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