Lynden Washington Climate Data

Monthly Average Climate Data for Lynden Washington

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January33.4 °F44.4 °F5.98 in.
February34.1 °F47.7 °F3.64 in.
March36.7 °F52.1 °F4.83 in.
April40.4 °F57.9 °F3.63 in.
May45.7 °F64.8 °F2.91 in.
June50.3 °F69.1 °F1.98 in.
July53.1 °F75.0 °F1.37 in.
August52.7 °F75.8 °F1.23 in.
September48.2 °F70.1 °F2.28 in.
October42.8 °F59.3 °F5.28 in.
November37.5 °F49.8 °F6.54 in.
December33.4 °F43.8 °F5.67 in.
Annual42.4 °F59.2 °F45.34 in.

Climate Data for Lynden 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 8a : 10°F to 15°F
Plant Hardiness Zone - 2012Zone 8a : 10°F to 15°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationCsb - Warm-Summer Mediterranean Climate