Arlington Washington Climate Data

Monthly Average Climate Data for Arlington Washington

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January33.8 °F46.3 °F5.68 in.
February33.5 °F49.2 °F4.22 in.
March35.9 °F53.1 °F4.97 in.
April39.9 °F58.9 °F4.17 in.
May44.9 °F65.4 °F3.11 in.
June49.2 °F69.2 °F2.48 in.
July51.7 °F75.7 °F1.15 in.
August51.6 °F76.7 °F1.22 in.
September47.8 °F71.5 °F2.45 in.
October41.5 °F60.4 °F4.92 in.
November36.7 °F51.0 °F6.78 in.
December33.4 °F45.3 °F6.47 in.
Annual41.7 °F60.2 °F47.62 in.

Climate Data for Arlington Washington

Average First Frost DateNov. 1 - Nov. 10
Average Last Frost DateApr. 11 - Apr. 20
Average Days With Frost40-50 Days
Plant Hardiness Zone - 2023Zone 8a : 10°F to 15°F
Plant Hardiness Zone - 2012Zone 8b : 15°F to 20°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationCsb - Warm-Summer Mediterranean Climate