Pend Oreille County experiences the four distinct seasons. They also bring typical mountain weather. Summers can be extremely hot and dry. Late Summer is usually the high danger time for fire season. Winter temperatures can fall below zero and heavy snowfalls are not unusual.
Pend Oreille County, WA gets 27 inches of rain per year. The US average is 37. Snowfall is 72 inches. The average US city gets 25 inches of snow per year. The number of days with any measurable precipitation is 123.
On average, there are 174 sunny days per year in Pend Oreille County, WA. The July high is around 85 degrees. The January low is 17. Our comfort index, which is based on humidity during the hot months, is a 78 out of 100, the higher the number is for the comfort index rating will indicate a more comfortable or desirable climate. The US average on the comfort index is 44. Summers in Pend Oreille County are warm or hot in most valleys and much cooler in the mountains. Winters are cold in the mountains. Valleys are colder than the lower slopes of the adjacent mountains because of cold air drainage. Precipitation occurs in the mountains throughout the year, and a deep snow pack accumulates during winter. Snow melt usually supplies much more water than can be used for agriculture. In the valleys, summer precipitation falls during showers and thunderstorms and in winter the ground is covered with snow much of the time. Chinook winds, which blow down slope and are warm and dry, often melt and evaporate the snow.