Average Weather in Le Mont-sur-Lausanne Switzerland
In Le Mont-sur-Lausanne, the summers are comfortable, the winters are very cold, and it is wet and partly cloudy year round. Over the course of the year, the temperature typically varies from 28°F to 76°F and is rarely below 19°F or above 86°F.
Based on the tourism score, the best time of year to visit Le Mont-sur-Lausanne for warm-weather activities is from late June to early September.
The warm season lasts for 3.2 months, from June 4 to September 10, with an average daily high temperature above 68°F. The hottest day of the year is August 4, with an average high of 76°F and low of 58°F.
The cold season lasts for 3.5 months, from November 17 to March 2, with an average daily high temperature below 44°F. The coldest day of the year is January 15, with an average low of 28°F and high of 37°F.
Average High and Low Temperature
The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.
Average Hourly Temperature
In Le Mont-sur-Lausanne, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year.
The clearer part of the year in Le Mont-sur-Lausanne begins around June 18 and lasts for 3.0 months, ending around September 18. On July 21, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 66% of the time, and overcast or mostly cloudy 34% of the time.
The cloudier part of the year begins around September 18 and lasts for 9.0 months, ending around June 18. On November 24, the cloudiest day of the year, the sky is overcast or mostly cloudy 59% of the time, and clear, mostly clear, or partly cloudy 41% of the time.
Cloud Cover Categories
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Le Mont-sur-Lausanne varies throughout the year.
The wetter season lasts 2.2 months, from April 29 to July 3, with a greater than 36% chance of a given day being a wet day. The chance of a wet day peaks at 44% on May 25.
The drier season lasts 9.9 months, from July 3 to April 29. The smallest chance of a wet day is 27% on March 3.
Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 44% on May 25.
Daily Chance of Precipitation
To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Le Mont-sur-Lausanne experiences some seasonal variation in monthly rainfall.
Rain falls throughout the year in Le Mont-sur-Lausanne. The most rain falls during the 31 days centered around May 31, with an average total accumulation of 3.9 inches.
The least rain falls around March 7, with an average total accumulation of 2.5 inches.
Average Monthly Rainfall
We report snowfall in liquid-equivalent terms. The actual depth of new snowfall is typically between 5 and 10 times the liquid-equivalent amount, assuming the ground is frozen. Colder, drier snow tends to be on the higher end of that range and warmer, wetter snow on the lower end.
As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day of the year. Le Mont-sur-Lausanne experiences some seasonal variation in monthly liquid-equivalent snowfall.
The snowy period of the year lasts for 3.9 months, from November 12 to March 9, with a sliding 31-day liquid-equivalent snowfall of at least 0.1 inches. The most snow falls during the 31 days centered around January 13, with an average total liquid-equivalent accumulation of 0.4 inches.
The snowless period of the year lasts for 8.1 months, from March 9 to November 12. The least snow falls around July 28, with an average total liquid-equivalent accumulation of 0.0 inches.
Average Liquid-Equivalent Monthly Snowfall
The length of the day in Le Mont-sur-Lausanne varies significantly over the course of the year. In 2018, the shortest day is December 21, with 8 hours, 34 minutes of daylight; the longest day is June 21, with 15 hours, 50 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 5:39 AM on June 16, and the latest sunrise is 2 hours, 38 minutes later at 8:17 AM on January 1. The earliest sunset is at 4:45 PM on December 11, and the latest sunset is 4 hours, 45 minutes later at 9:30 PM on June 26.
Daylight saving time (DST) is observed in Le Mont-sur-Lausanne during 2018, starting in the spring on March 25, lasting 7.1 months, and ending in the fall on October 28.
Sunrise & Sunset with Twilight and Daylight Saving Time
The perceived humidity level in Le Mont-sur-Lausanne, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, remaining a virtually constant 0% throughout.
Humidity Comfort Levels
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The average hourly wind speed in Le Mont-sur-Lausanne experiences mild seasonal variation over the course of the year.
The windier part of the year lasts for 5.1 months, from November 26 to April 28, with average wind speeds of more than 6.3 miles per hour. The windiest day of the year is April 3, with an average hourly wind speed of 7.0 miles per hour.
The calmer time of year lasts for 6.9 months, from April 28 to November 26. The calmest day of the year is August 10, with an average hourly wind speed of 5.6 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Le Mont-sur-Lausanne varies throughout the year.
The wind is most often from the north for 2.6 weeks, from April 8 to April 26, with a peak percentage of 31% on April 20. The wind is most often from the west for 4.7 months, from April 26 to September 17, with a peak percentage of 41% on July 5. The wind is most often from the south for 6.7 months, from September 17 to April 8, with a peak percentage of 51% on January 1.
Best Time of Year to Visit
To characterize how pleasant the weather is in Le Mont-sur-Lausanne throughout the year, we compute two travel scores.
The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best time of year to visit Le Mont-sur-Lausanne for general outdoor tourist activities is from late June to early September, with a peak score in the first week of August.
The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit Le Mont-sur-Lausanne for hot-weather activities is from early July to mid August, with a peak score in the last week of July.
For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.
Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.
Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.
Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.
Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.
The growing season in Le Mont-sur-Lausanne typically lasts for 7.0 months (214 days), from around April 4 to around November 5, rarely starting before March 14 or after April 24, and rarely ending before October 16 or after November 30.
Time Spent in Various Temperature Bands and the Growing Season
Based on growing degree days alone, the first spring blooms in Le Mont-sur-Lausanne should appear around April 24, only rarely appearing before April 11 or after May 9.
Growing Degree Days
The average daily incident shortwave solar energy experiences extreme seasonal variation over the course of the year.
The brighter period of the year lasts for 3.2 months, from May 12 to August 18, with an average daily incident shortwave energy per square meter above 5.8 kWh. The brightest day of the year is July 6, with an average of 7.0 kWh.
The darker period of the year lasts for 3.5 months, from October 29 to February 13, with an average daily incident shortwave energy per square meter below 2.4 kWh. The darkest day of the year is December 24, with an average of 1.3 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Le Mont-sur-Lausanne are 46.558 deg latitude, 6.631 deg longitude, and 2,113 ft elevation.
The topography within 2 miles of Le Mont-sur-Lausanne contains very significant variations in elevation, with a maximum elevation change of 1,168 feet and an average elevation above sea level of 2,209 feet. Within 10 miles contains very significant variations in elevation (2,352 feet). Within 50 miles contains large variations in elevation (12,667 feet).
The area within 2 miles of Le Mont-sur-Lausanne is covered by artificial surfaces (49%), cropland (34%), and trees (17%), within 10 miles by cropland (47%) and water (25%), and within 50 miles by trees (38%) and cropland (22%).
This report illustrates the typical weather in Le Mont-sur-Lausanne, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.
Temperature and Dew Point
There are 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Le Mont-sur-Lausanne.
For each station, the records are corrected for the elevation difference between that station and Le Mont-sur-Lausanne according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.
The estimated value at Le Mont-sur-Lausanne is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Le Mont-sur-Lausanne and a given station.
The stations contributing to this reconstruction are: Aéroport Genève-Cointrin (35%, 54 kilometers, southwest); Neuchatel (36%, 55 kilometers, northeast); and Sion (28%, 65 kilometers, southeast).
Time zones for aiports and weather stations are provided by AskGeo.com .