United States Weather in December

Check the Weather in the United States in December before you book your next holiday. This gives the best indication of the weather in December and includes figures for temperature, sunshine and rainfall. The United States december weather guide shown below is for Washington.

  • 8°C maximum daytime temperature in December in United States (Washington)8
    8°C max day temperature
  • 4 hours of sunshine per day (45% of daylight hours) in December in United States4
    4 hours of sunshine per day
  • 9 days with some rainfall in December in United States (Washington)9
    9 days with some rainfall
  • -1°C minimum night-time temperature in December in United States (Washington)-1
    -1°C min night temperature
  • 9 hours of daylight per day in December in United States (Washington)9
    9 hours of daylight per day
  • No heat & humidity in December in United States (Washington)0
    No heat & humidity
  • 82 mm monthly rainfall in December in United States (Washington)82
    82 mm of monthly rainfall
  • UV (maximum) index 2 (Low) in December in United States (Washington)2
    2 (Low) UV index

Metric (°C / mm)  |  Imperial (°F / inches)

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