Renton Washington Climate Data

Monthly Average Climate Data for Renton Washington

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January36.7 °F47.7 °F5.57 in.
February36.8 °F50.2 °F4.11 in.
March39.3 °F54.1 °F4.54 in.
April42.8 °F59.3 °F3.52 in.
May48.2 °F66.2 °F1.9 in.
June52.7 °F70.6 °F1.64 in.
July56.3 °F76.8 °F0.68 in.
August56.5 °F77.4 °F0.96 in.
September52.6 °F71.7 °F1.57 in.
October46.2 °F60.9 °F4.3 in.
November40.3 °F52.3 °F6.5 in.
December36.4 °F46.9 °F6.08 in.
Annual45.4 °F61.2 °F41.37 in.

Climate Data for Renton Washington

Average First Frost DateNov. 11 - Nov. 20
Average Last Frost DateApr. 1 - Apr. 10
Average Days With Frost30-40 Days
Plant Hardiness Zone - 2023Zone 9a : 20°F to 25°F
Plant Hardiness Zone - 2012Zone 8b : 15°F to 20°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationCsb - Warm-Summer Mediterranean Climate