Tonasket Washington Climate Data

Monthly Average Climate Data for Tonasket Washington

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-4.6 °C1.2 °C29.97 mm
February-3.5 °C5.3 °C22.61 mm
March-0.4 °C11.8 °C25.15 mm
April2.8 °C17.6 °C24.13 mm
May6.9 °C22.9 °C37.85 mm
June10.5 °C26.4 °C36.83 mm
July13.6 °C31.5 °C16 mm
August13 °C31.1 °C13.72 mm
September8.2 °C25.3 °C13.46 mm
October3.1 °C16.4 °C26.16 mm
November-1.2 °C7.3 °C34.04 mm
December-4.2 °C1.6 °C42.42 mm
Annual3.7 °C16.5 °C322.34 mm

Climate Data for Tonasket Washington

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 11 - May 20
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 7a : -17.8°C to -15°C
Plant Hardiness Zone - 2012Zone 6b : -20.6°C to -17.8°C
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationBSk - Cold Semi-Arid Climate