Graham Washington Climate Data

Monthly Average Climate Data for Graham Washington

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January34.0 °F45.9 °F6.47 in.
February33.8 °F48.5 °F4.35 in.
March36.0 °F52.8 °F5.05 in.
April39.1 °F57.7 °F3.52 in.
May44.6 °F64.8 °F3.0 in.
June48.9 °F69.2 °F2.43 in.
July52.5 °F76.3 °F0.99 in.
August52.8 °F77.3 °F1.21 in.
September48.6 °F71.2 °F1.51 in.
October42.4 °F60.0 °F4.63 in.
November37.0 °F50.5 °F6.63 in.
December33.5 °F45.0 °F5.71 in.
Annual41.9 °F59.9 °F45.5 in.

Climate Data for Graham Washington

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateApr. 21 - Apr. 30
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