Kennewick, WA 99336 has a Mediterranean climate with hot, dry summers and cool, wet winters. Summers are typically sunny with temperatures reaching the mid-80s while winters range from mild to cold with temperatures often dropping to the teens and low 20s. Rainfall in Kennewick is moderate throughout the year, averaging around 12 inches annually. Snowfall is rare but does occur at times during winter months.
Kennewick (zip 99336), Washington gets 8 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Kennewick (zip 99336) averages 4 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 192 sunny days per year in Kennewick (zip 99336). The US average is 205 sunny days.
Kennewick (zip 99336) 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