Happy Valley Weather in December

What's the weather like in Happy Valley (Oregon) in December 2024?

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

December is in the winter in Happy Valley 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 (34°F) is normal.

Happy Valley weather averages (imperial / metric)
Daytime temperature 7.3°C 45.1°F
Nightly temperature 1°C 33.7°F
Average temperature 4.1°C 39.4°F
Daily sunshine 2.3 hrs
Avg rainfall 204 mm 8 ins
Rainy days 18 days
Sea temperature 9.6°C 49.2°F
Humidity 83%
Windspeed 14.8kph 9 mph

On average December is the wettest month of the year in Happy Valley with around 204mm 8 inches of rain making it a very wet time to visit. This rainfall is typically spread over 18 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 Happy Valley

Happy Valley average temperature in December

December rainfall

Happy Valley average rain in December

December hourly sunshine

Happy Valley 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 Happy Valley 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

Happy Valley weather stats

Happy Valley weather statistics
Hottest month: August 26.1°C 79°F
Driest month: July 22mm 0.9ins
Sunniest month: July 11.7hrs
Coldest month: January 7°C 44.6°F
Wettest month: December 204mm 8ins
Map showing location of Happy Valley (45.44679, -122.53037) Happy Valley map pin © Google

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