Dayton Weather in December

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

The climate in Dayton during December can be summarized as cold and reasonably dry.

December is in the winter in Dayton and is typically the 2nd coldest month of the year. Daytime maximum temperatures average around a freezing 3°C (37°F), whilst at night -5°C (24°F) is normal.

Dayton weather averages (imperial / metric)
Daytime temperature 3°C 37.4°F
Nightly temperature -4.6°C 23.7°F
Average temperature -0.8°C 30.6°F
Daily sunshine 2.1 hrs
Avg rainfall 71 mm 2.8 ins
Rainy days 13 days
Sea temperature 8.7°C 47.6°F
Humidity 81%
Windspeed 13kph 8 mph

On average December is the wettest month of the year in Dayton with around 71mm 2.8 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 13 days, although this may vary considerably.

On the flip side this corresponds to an average of 2.1 hours of sunshine per day.

December temperatures in Dayton

Dayton average temperature in December

December rainfall

Dayton average rain in December

December hourly sunshine

Dayton 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 Dayton in December 2024.