Average Weather in January in Chens-sur-Léman France
Daily high temperatures are around 41°F, rarely falling below 31°F or exceeding 51°F. The lowest daily average high temperature is 40°F on January 10.
Daily low temperatures are around 31°F, rarely falling below 22°F or exceeding 40°F. The lowest daily average low temperature is 31°F on January 15.
For reference, on August 4, the hottest day of the year, temperatures in Chens-sur-Léman typically range from 60°F to 80°F, while on January 15, the coldest day of the year, they range from 31°F to 40°F.
Average High and Low Temperature in January
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on January. The horizontal axis is the day, 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 January
Carson, Washington, United States (5,344 miles away) and West Jefferson, North Carolina, United States (4,371 miles) are the far-away foreign places with temperatures most similar to Chens-sur-Léman (view comparison).
The month of January in Chens-sur-Léman experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 55% throughout the month.
The clearest day of the month is January 30, with clear, mostly clear, or partly cloudy conditions 47% of the time.
For reference, on November 24, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 58%, while on July 21, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 68%.
Cloud Cover Categories in January
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. In Chens-sur-Léman, the chance of a wet day over the course of January is essentially constant, remaining around 31% throughout.
For reference, the year's highest daily chance of a wet day is 41% on May 25, and its lowest chance is 26% on March 3.
Over the course of January in Chens-sur-Léman, the chance of a day with only rain remains an essentially constant 27% throughout, the chance of a day with mixed snow and rain remains an essentially constant 2% throughout, and the chance of a day with only snow remains an essentially constant 1% throughout.
Probability of Precipitation in January
The average sliding 31-day rainfall during January in Chens-sur-Léman is gradually decreasing, starting the month at 3.3 inches, when it rarely exceeds 6.3 inches or falls below 1.1 inches, and ending the month at 3.0 inches, when it rarely exceeds 6.0 inches or falls below 0.7 inches.
Average Monthly Rainfall in January
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. As with rainfall, we consider the liquid-equivalent snowfall accumulated over a sliding 31-day period centered around each day.
The average sliding 31-day liquid-equivalent snowfall during January in Chens-sur-Léman is essentially constant, remaining about 0.1 inches throughout, and rarely exceeding 0.4 inches or falling below -0.0 inches.
The highest average 31-day liquid-equivalent accumulation is 0.1 inches on January 2.
Average Monthly Liquid-Equivalent Snowfall in January
Over the course of January in Chens-sur-Léman, the length of the day is increasing. From the start to the end of the month, the length of the day increases by 57 minutes, implying an average daily increase of 1 minute, 55 seconds, and weekly increase of 13 minutes, 24 seconds.
The shortest day of the month is January 1, with 8 hours, 41 minutes of daylight and the longest day is January 31, with 9 hours, 38 minutes of daylight.
Hours of Daylight and Twilight in January
The latest sunrise of the month in Chens-sur-Léman is 8:18 AM on January 1 and the earliest sunrise is 19 minutes earlier at 7:59 AM on January 31.
The earliest sunset is 4:58 PM on January 1 and the latest sunset is 39 minutes later at 5:37 PM on January 31.
Daylight saving time is observed in Chens-sur-Léman during 2018, but it neither starts nor ends during January, so the entire month is in standard time.
For reference, on June 21, the longest day of the year, the Sun rises at 5:42 AM and sets 15 hours, 48 minutes later, at 9:30 PM, while on December 21, the shortest day of the year, it rises at 8:15 AM and sets 8 hours, 36 minutes later, at 4:50 PM.
Sunrise & Sunset with Twilight in January
The chance that a given day will be muggy in Chens-sur-Léman is essentially constant during January, remaining around 0% throughout.
For reference, on August 10, the muggiest day of the year, there are muggy conditions 1% of the time, while on January 1, the least muggy day of the year, there are muggy conditions 0% of the time.
Humidity Comfort Levels in January
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The average hourly wind speed in Chens-sur-Léman is essentially constant during January, remaining within 0.2 miles per hour of 6.6 miles per hour throughout.
For reference, on April 3, the windiest day of the year, the daily average wind speed is 7.1 miles per hour, while on August 10, the calmest day of the year, the daily average wind speed is 5.8 miles per hour.
The lowest daily average wind speed during January is 6.4 miles per hour on January 6.
Average Wind Speed in January
Wind Direction in January
The growing season in Chens-sur-Léman typically lasts for 7.4 months (227 days), from around March 27 to around November 9, rarely starting before March 3 or after April 19, and rarely ending before October 18 or after December 3.
The month of January in Chens-sur-Léman is reliably fully outside of the growing season.
Time Spent in Various Temperature Bands and the Growing Season in January
The average accumulated growing degree days in Chens-sur-Léman are essentially constant during January, remaining within 1°F of 1°F throughout.
Growing Degree Days in January
The average daily incident shortwave solar energy in Chens-sur-Léman is gradually increasing during January, rising by 0.6 kWh, from 1.3 kWh to 2.0 kWh, over the course of the month.
Average Daily Incident Shortwave Solar Energy in January
For the purposes of this report, the geographical coordinates of Chens-sur-Léman are 46.329 deg latitude, 6.263 deg longitude, and 1,230 ft elevation.
The topography within 2 miles of Chens-sur-Léman contains only modest variations in elevation, with a maximum elevation change of 256 feet and an average elevation above sea level of 1,294 feet. Within 10 miles contains only modest variations in elevation (4,003 feet). Within 50 miles also contains extreme variations in elevation (15,112 feet).
The area within 2 miles of Chens-sur-Léman is covered by water (55%), cropland (22%), and trees (14%), within 10 miles by cropland (31%) and water (24%), and within 50 miles by trees (42%) and cropland (21%).
This report illustrates the typical weather in Chens-sur-Léman year round, 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 5 weather stations near enough to contribute to our estimation of the temperature and dew point in Chens-sur-Léman.
For each station, the records are corrected for the elevation difference between that station and Chens-sur-Léman 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 Chens-sur-Léman is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Chens-sur-Léman and a given station.
The stations contributing to this reconstruction are: Aéroport Genève-Cointrin (77%, 16 kilometers, southwest); Sion (7%, 82 kilometers, east); Neuchatel (6%, 91 kilometers, northeast); Dole–Jura Airport (5.0%, 102 kilometers, northwest); and Besançon – La Vèze Aerodrome (4.8%, 105 kilometers, north).
Time zones for aiports and weather stations are provided by AskGeo.com .