Is Fortress Mountain snowsure?

The snowiest week in Fortress Mountain is week 4 of April. There are typically 4.3 snowy days during this week with 23cm of snowfall. Check out the Fortress Mountain Snow History graphs below.Select any week of the year to see the typical Ski Conditions, Snowfall Amount and Temperature based on nowcast weather data over the last 11 years.

Average monthly snow in Fortress Mountain

MonthSnow amount (week)Snow days (week)
December10cm3.1 days
January8cm2.4 days
February12cm3.3 days
March15cm4.0 days
April21cm4.1 days

Average Snow and Weather Conditions in Fortress Mountain during December (week 1):

The average snowfall forecast during week 1 of December for Fortress Mountain is 11 cm. There are typically 3.1 snowy days during this week. Fortress Mountain normal weather and snow conditions during the first week of December at the middle elevation of the ski area at 2149m, based on historical averages over the last 10 years: At this time of year the typical freezing level (658m) is far below the mid altitude of Fortress Mountain. Based on long-term averages, there are three days with snowfall per week in Fortress Mountain at the start of December. Forecast model average snowfall for the week is 11cm. Pretty cold temperatures with the average maximum temperature in Fortress Mountain in week one of December of just -9.6°C at the mid altitude and minimum temperatures typically falling to -11.5°C. Expect the sun to come out on two or three days per week. Mainly light winds (average 18km/h) are unlikely to affect lift operations but the historical norm is for the mean wind to reach 30km/h one day in this week. Sunny, calm and below freezing perfect weather days that follow fresh snow (bluebird powder days) occur on average one day every second year during this week but clear, calm and cold days that don't have new snow happen on average three or four days during this week each year.

Snow History: Compare Resorts

Compare Fortress Mountain with:

Snow Depths

Recorded snow depths for the upper and lower slopes in Fortress Mountain and (2007 – 2018).


Fortress Mountain

Lower Slopes
Upper Slopes
Fresh Snow

Average Snow Conditions in

Best ski days per week in Fortress Mountain and (2007 – 2018)


Bluebird Powder Day
(Fresh snow, mostly sunny, light wind)
Powder Day
(Fresh snow, limited sun, any wind)
Bluebird Day
(Average snow, mostly sunny, light wind)
Very windy days

The most cherished days on the mountain in Fortress Mountain are Bluebird Powder days when it is mostly sunny with light winds following very recent snowfall. Poorer weather conditions may prevail on Powder days when the visibility can be limited but the snow is significantly deep and fresh for keen powder-hounds. Bluebird days can suit many skiers that aren’t necessarily hunting powder but want to enjoy the snowy mountains in sunnier conditions and light winds.

Average Snowfall in

Graph showing the average precipitation (snow/rain) in Fortress Mountain and (2007 – 2018)


Snowfall amount
(bar chart)
Days with significant snowfall.
Days with significant rainfall.

The snowiest weeks of the year in Fortress Mountain are shown but also bear in mind the number of days that it typically snows each week if you want regular fresh tracks. The risk of a rainy day is shown but be sure to switch between elevations to see if lower lifts are rain affected or higher lifts remain snowy despite any rain further down the mountain.

Average Temperature in

Graph showing the average temperature and freezing level at Fortress Mountain and (2007 – 2018)


Average temperature
Above freezing
Below freezing
Freezing level
Dashed line

The highest and lowest temperatures averaged for each week of the year in Fortress Mountain are shown. Check out the risk of freze-thaw conditions prevailing at different elevations for any given week. We also show the extremes of temperature (blue/red dots) that reveal the chance of unusually warm or cold conditions.