Dayton Washington Climate Data

Monthly Average Climate Data for Dayton Washington

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-2.3 °C4.7 °C53.59 mm
February-1.3 °C7.2 °C43.94 mm
March1.4 °C11.8 °C56.9 mm
April3.7 °C15.7 °C45.72 mm
May7.5 °C20.6 °C44.2 mm
June10.3 °C24.5 °C31.5 mm
July13.5 °C30.6 °C9.91 mm
August13.4 °C30.5 °C11.94 mm
September9.7 °C25.1 °C18.54 mm
October4.4 °C17 °C41.4 mm
November0.3 °C8.9 °C60.45 mm
December-2.5 °C4.2 °C60.45 mm
Annual4.8 °C16.7 °C478.54 mm

Climate Data for Dayton Washington

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 21 - May 31
Average Days With Frost100-125 Days
Plant Hardiness Zone - 2023Zone 7a : -17.8°C to -15°C
Plant Hardiness Zone - 2012Zone 7a : -17.8°C to -15°C
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationCsb - Warm-Summer Mediterranean Climate