Royal City Washington Climate Data

Monthly Average Climate Data for Royal City Washington

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-3.7 °C3.2 °C25.91 mm
February-2.2 °C7.2 °C16.76 mm
March0.5 °C12.6 °C17.53 mm
April3.6 °C17.2 °C16 mm
May7.8 °C22.3 °C13.97 mm
June11.1 °C25.9 °C16.76 mm
July14.5 °C31 °C9.65 mm
August14.1 °C30.6 °C4.32 mm
September9.7 °C25.7 °C5.59 mm
October4.2 °C17.6 °C16.51 mm
November-0.7 °C8.7 °C22.86 mm
December-3.9 °C2.8 °C28.45 mm
Annual40.2 °C62.7 °C7.65 mm

Climate Data for Royal City Washington

Average First Frost DateNov. 11 - Nov. 20
Average Last Frost DateMay 1 - May 10
Average Days With Frost100-125 Days
Plant Hardiness ZoneZone 6b : -20.6°C to -17.8°C
Current Drought ConditionsNormal
Köppen Climate ClassificationBWk - Cold Desert Climate