Montana Weather in December

Check the Weather in Montana 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 Montana december weather guide shown below is for Helena.

  • -0°C maximum daytime temperature in December in Montana (Helena)-0
    -0°C max day temperature
  • 3 hours of sunshine per day (37% of daylight hours) in December in Montana3
    3 hours of sunshine per day
  • 9 days with some rainfall in December in Montana (Helena)9
    9 days with some rainfall
  • -12°C minimum night-time temperature in December in Montana (Helena)-12
    -12°C min night temperature
  • 9 hours of daylight per day in December in Montana (Helena)9
    9 hours of daylight per day
  • No heat & humidity in December in Montana (Helena)0
    No heat & humidity
  • 16 mm monthly rainfall in December in Montana (Helena)16
    16 mm of monthly rainfall
  • UV (maximum) index 1 (Low) in December in Montana (Helena)1
    1 (Low) UV index

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

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