Kennewick has a semi-arid climate (Köppen "BSk") that barely escapes a desert climate (Köppen climate classification BWk) with chilly though not severe winters with frequent light rainfall, and hot, very dry summers made tolerable by the low humidity.
Kennewick has a semi-arid climate (Köppen "BSk"), that closely borders on a desert climate (Köppen "BWk"). Winters are chilly but not severe, with frequent light rainfall, and hot, very dry summers made tolerable by the low humidity.