Kennewick, WA has a semi-arid climate with cold winters and hot summers. Winters are usually dry with occasional snowfall in the higher elevations. Summer temperatures tend to be warm to hot with slightly cooler nighttime temperatures due to the low humidity levels. The area receives approximately 8 inches of precipitation annually, mostly in the winter months from October through April. Spring brings warm temperatures and some sporadic rain showers while summer is generally dry and sunny with occasional thunderstorms. Fall tends to bring milder weather and less precipitation than other seasons.
Kennewick, Washington gets 8 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Kennewick averages 4 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 191 sunny days per year in Kennewick. The US average is 205 sunny days.
Kennewick gets some kind of precipitation, on average, 83 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.
Weather Highlights
Summer High: the July high is around 90 degrees
Winter Low: the January low is 29
Rain: averages 8 inches of rain a year
Snow: averages 4 inches of snow a year