Kennewick (WA) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Kennewick.
Climate overview of Kennewick
Kennewick, Washington State, United States of America, sees big temperature differences between seasons, with July peaking at 33°C (91°F) and December dropping to 5°C (41°F).
Rain/snowfall is extremely rare, with only 186 mm (7.3 in) falling across the entire year.
Kennewick Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Kennewick — and find the best time to visit.
Monthly Temperature in Kennewick
Visitors to Kennewick can expect significant temperature changes throughout the year. Average maximum daytime temperatures range from a very warm 33°C (91°F) in July, the warmest time of the year, to a chilly 5°C (41°F) during cooler months like December.
At night, you can expect temperatures ranging from 16°C (61°F) in July to around -3°C (27°F) during December.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Kennewick
Kennewick experiences desert-like conditions in terms of precipitation with almost no rain/snowfall, generally receiving 186 mm (7.3 in) annually. Significant seasonal changes in precipitation occur throughout the year. In the wettest month, December it receives low snow/rainfall, averaging 30 mm (1.2 in) of precipitation, recorded across 11 snowy/rainy days. In contrast, the driest month August brings less rainfall, with 2.8 mm (0.1 in) over 2 rainy days. For more details, please visit our Kennewick Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Best Time to Visit Kennewick
Make the most of the clear weather, but remember to protect yourself from the sun and stay well-hydrated. Seeking the perfect travel destination for this year? We've created a tool that suggests locations matching your desired weather. Let our weather planner guide your travel decisions.
Frequently asked questions about the climate in Kennewick
What is the best time to visit Kennewick?
April, May, June, September and October typically offer the most optimal weather in Kennewick. In contrast, January, February and December tend to have less optimal conditions. Kennewick has a distinct dry season from January to December.
What temperatures can I expect in Kennewick?
Daytime highs range from 5°C (41°F) in December to 33°C (91°F) in July. Nighttime lows range from -3°C (27°F) to 16°C (61°F). Temperatures vary considerably through the year.
How much rain does Kennewick get?
Annual rainfall is around 186 mm (7.3 in). December is the wettest month with 30 mm (1.2 in), while August is the driest with 2.8 mm (0.1 in). In the coldest months, precipitation may fall as snow/rain.
Kennewick 3-Day Forecast
Kennewick (WA) 3-Day Forecast
Kennewick on the map
Kennewick is highlighted — select any city to see its climate.
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