Cathlamet Weather in December

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

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

December is in the winter in Cathlamet and is typically the 2nd coldest month of the year. Daytime maximum temperatures average around a cold 8°C (46°F), whilst at night 1°C (34°F) is normal.

Cathlamet weather averages (imperial / metric)
Daytime temperature 7.9°C 46.1°F
Nightly temperature 1.2°C 34.1°F
Average temperature 4.5°C 40.1°F
Daily sunshine 2.3 hrs
Avg rainfall 254 mm 10 ins
Rainy days 21 days
Sea temperature 9.8°C 49.6°F
Humidity 85%
Windspeed 14.8kph 9 mph

On average December is the wettest month of the year in Cathlamet with around 254mm 10 inches of rain making it a very wet time to visit. This rainfall is typically spread over 21 days, although this may vary considerably.

On the flip side this corresponds to an average of 2.3 hours of sunshine per day.

December temperatures in Cathlamet

Cathlamet average temperature in December

December rainfall

Cathlamet average rain in December

December hourly sunshine

Cathlamet 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 Cathlamet in December 2024.