Kennewick Weather in December

What's the weather like in Kennewick (Washington) in December 2024?

The climate in Kennewick during December can be summarized as cool and dry.

December is in the winter in Kennewick and is typically the 2nd coldest month of the year. Daytime maximum temperatures average around a cold 5°C (41°F), whilst at night -2°C (28°F) is normal.

Kennewick weather averages (imperial / metric)
Daytime temperature 5°C 40.9°F
Nightly temperature -2.4°C 27.8°F
Average temperature 1.3°C 34.3°F
Daily sunshine 1.7 hrs
Avg rainfall 28 mm 1.1 ins
Rainy days 11 days
Sea temperature 8.8°C 47.9°F
Humidity 80%
Windspeed 12.2kph 8 mph

On average December is the wettest month of the year in Kennewick with around 28mm 1.1 inches of rain making it a dry time to visit. This rainfall is typically spread over 11 days, although this may vary considerably.

On the flip side this corresponds to an average of 1.7 hours of sunshine per day.

December temperatures in Kennewick

Kennewick average temperature in December

December rainfall

Kennewick average rain in December

December hourly sunshine

Kennewick average rain in December

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Kennewick in December 2024.