Helena weather in December 2019

  • 0°C maximum daytime temperature in December in Helena0
    0°C max day temperature
  • 3 hours of sunshine per day
  • 9 days with some rainfall in December in Helena9
    9 days with some rainfall
  • -12°C minimum night-time temperature in December in Helena-12
    -12°C min night temperature
  • 9 hours of daylight per day in December in Helena9
    9 hours of daylight per day
  • No heat & humidity in December in Helena0
    No heat & humidity
  • 16 mm monthly rainfall in December in Helena16
    16 mm of monthly rainfall
  • UV (maximum) index 1 (Low) in December in Helena1
    1 (Low) UV index
  • Top deals & discounts
  • Helena weather overview
  • Helena climate averages by month
  • More destinations
  • Best time to go to Helena
  • Helena 5-day weather forecast

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

The December weather guide for Helena, Montana shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

  • Find cheapest air fares from popular airlines & OTAs
  • Compare prices from BA, Virgin Atlantic, Jet2, Easyjet & more
  • Find the cheapest time to fly & where to book online

How cold is it in Helena in December?

Daytime temperatures usually reach -0°C in Helena in December, falling to -12°C at night.

How sunny is it in Helena in December?

There are normally 3 hours of bright sunshine each day in Helena in December - that's 37% of daylight hours.

Does it rain in Helena in December?

There are usually 9 days with some rain in Helena in December and the average monthly rainfall is 16mm.

Helena sunrise & sunset times for December 2019

Browse the sunrise & sunset times for Helena in December 2019. Select a month to view Helena sunrise & sunset times for the next twelve months.


Date Sunrise times Sunset times
Sunday, 1st December 2019 07:52 16:43
Monday, 16th December 2019 08:06 16:41
Tuesday, 31st December 2019 08:12 16:50
  • Compare car hire prices to find lowest rate
  • Free cancellation up to 48 hours before pick up
  • Book car hire for over 20,000 destinations worldwide

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

Back to top

Discover more about the USA

Where's warm in Montana in December?

Below are average maximum temperatures at popular destinations in Montana in December. Select a destination to see more weather parameters.

More destinations & map >>

Related posts

Popular travel offers

Top ^

*affiliate links: find out how we are funded and why this helps us remain free to use.