Kelso Weather in December

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

The climate in Kelso during December can be summarized as cool and very wet.

December is in the winter in Kelso and is typically the 2nd coldest month of the year. Daytime maximum temperatures average around a cold 7°C (45°F), whilst at night 1°C (33°F) is normal.

Kelso weather averages (imperial / metric)
Daytime temperature 7.3°C 45.1°F
Nightly temperature 0.8°C 33.4°F
Average temperature 4°C 39.2°F
Daily sunshine 2.2 hrs
Avg rainfall 202 mm 8 ins
Rainy days 20 days
Sea temperature 9.1°C 48.4°F
Humidity 85%
Windspeed 14.8kph 9 mph

On average December is the wettest month of the year in Kelso with around 202mm 8 inches of rain making it a very wet time to visit. This rainfall is typically spread over 20 days, although this may vary considerably.

On the flip side this corresponds to an average of 2.2 hours of sunshine per day.

December temperatures in Kelso

Kelso average temperature in December

December rainfall

Kelso average rain in December

December hourly sunshine

Kelso 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 Kelso in December 2024.