Mount Vernon Weather in December

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

The climate in Mount Vernon during December can be summarized as cool and damp.

December is in the winter in Mount Vernon 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 (35°F) is normal.

Mount Vernon weather averages (imperial / metric)
Daytime temperature 7.6°C 45.7°F
Nightly temperature 1.4°C 34.5°F
Average temperature 4.5°C 40.1°F
Daily sunshine 2.1 hrs
Avg rainfall 114 mm 4.5 ins
Rainy days 19 days
Sea temperature 8.3°C 46.9°F
Humidity 83%
Windspeed 14.4kph 9 mph

On average December is the wettest month of the year in Mount Vernon with around 114mm 4.5 inches of rain making it a damp time to visit. This rainfall is typically spread over 19 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 Mount Vernon

Mount Vernon average temperature in December

December rainfall

Mount Vernon average rain in December

December hourly sunshine

Mount Vernon 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 Mount Vernon in December 2024.

Other monthly averages

Best places to visit in December

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Mount Vernon weather stats

Mount Vernon weather statistics
Hottest month: August 21.8°C 71.2°F
Driest month: July 31mm 1.2ins
Sunniest month: July 10.4hrs
Coldest month: January 7.3°C 45.1°F
Wettest month: December 114mm 4.5ins
Map showing location of Mount Vernon (48.42122, -122.33405) Mount Vernon map pin © Google

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