Average Weather in December in Mercus-Garrabet France
In Mercus-Garrabet, the month of December is characterized by gradually falling daily high temperatures, with daily highs decreasing by 2°F, from 48°F to 46°F over the course of the month, and rarely exceeding 57°F or dropping below 35°F.
Daily low temperatures decrease by 3°F, from 34°F to 31°F, rarely falling below 22°F or exceeding 42°F.
For reference, on August 4, the hottest day of the year, temperatures in Mercus-Garrabet typically range from 57°F to 76°F, while on January 12, the coldest day of the year, they range from 31°F to 45°F.
Average High and Low Temperature in December
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on December. 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 December
The month of December in Mercus-Garrabet experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 58% throughout the month.
The clearest day of the month is December 17, with clear, mostly clear, or partly cloudy conditions 43% of the time.
For reference, on November 24, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 59%, while on July 21, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 76%.
Cloud Cover Categories in December
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Mercus-Garrabet, the chance of a wet day over the course of December is essentially constant, remaining around 23% throughout.
For reference, the year's highest daily chance of a wet day is 33% on May 3, and its lowest chance is 17% on July 20.
Over the course of December in Mercus-Garrabet, the chance of a day with only rain decreases from 22% to 19%, 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 December
The average sliding 31-day rainfall during December in Mercus-Garrabet is gradually decreasing, starting the month at 1.9 inches, when it rarely exceeds 3.3 inches or falls below 0.5 inches, and ending the month at 1.4 inches, when it rarely exceeds 2.9 inches or falls below 0.3 inches.
Average Monthly Rainfall in December
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 December in Mercus-Garrabet is essentially constant, remaining about 0.1 inches throughout, and rarely exceeding 0.5 inches or falling to 0.0 inches.
Average Monthly Liquid-Equivalent Snowfall in December
Over the course of December in Mercus-Garrabet, the length of the day is essentially constant. The shortest day of the month is December 21, with 9 hours, 1 minute of daylight and the longest day is December 1, with 9 hours, 16 minutes of daylight.
Hours of Daylight and Twilight in December
The earliest sunrise of the month in Mercus-Garrabet is 8:04 AM on December 1 and the latest sunrise is 20 minutes later at 8:24 AM on December 31.
The earliest sunset is 5:19 PM on December 9 and the latest sunset is 10 minutes later at 5:28 PM on December 31.
Daylight saving time is observed in Mercus-Garrabet during 2017, but it neither starts nor ends during December, so the entire month is in standard time.
For reference, on June 21, the longest day of the year, the Sun rises at 6:14 AM and sets 15 hours, 21 minutes later, at 9:35 PM, while on December 21, the shortest day of the year, it rises at 8:21 AM and sets 9 hours, 1 minute later, at 5:22 PM.
Sunrise & Sunset with Twilight in December
The chance that a given day will be muggy in Mercus-Garrabet is essentially constant during December, remaining around 0% throughout.
For reference, on August 5, the muggiest day of the year, there are muggy conditions 2% of the time, while on October 11, the least muggy day of the year, there are muggy conditions 0% of the time.
Humidity Comfort Levels in December
The average hourly wind speed in Mercus-Garrabet is essentially constant during December, remaining within 0.1 miles per hour of 5.5 miles per hour throughout.
For reference, on February 19, the windiest day of the year, the daily average wind speed is 6.0 miles per hour, while on August 12, the calmest day of the year, the daily average wind speed is 4.1 miles per hour.
Average Wind Speed in December
Wind Direction in December
The growing season in Mercus-Garrabet typically lasts for 6.6 months (201 days), from around April 17 to around November 4, rarely starting before March 29 or after May 10, and rarely ending before October 16 or after November 27.
The month of December in Mercus-Garrabet is very likely fully outside of the growing season, with the chance that a given day is in the growing season gradually decreasing from 7% to 0% over the course of the month.
Time Spent in Various Temperature Bands and the Growing Season in December
The average accumulated growing degree days in Mercus-Garrabet is essentially constant during December, remaining within 3°F of 2,078°F throughout.
Growing Degree Days in December
The average daily incident shortwave solar energy in Mercus-Garrabet is essentially constant during December, remaining within 0.1 kWh of 1.7 kWh throughout.
The lowest average daily incident shortwave solar energy during December is 1.7 kWh on December 19.
Average Daily Incident Shortwave Solar Energy in December
For the purposes of this report, the geographical coordinates of Mercus-Garrabet are 42.878 deg latitude, 1.629 deg longitude, and 2,418 ft elevation.
The topography within 2 miles of Mercus-Garrabet contains large variations in elevation, with a maximum elevation change of 2,743 feet and an average elevation above sea level of 2,334 feet. Within 10 miles contains large variations in elevation (6,493 feet). Within 50 miles also contains extreme variations in elevation (9,951 feet).
The area within 2 miles of Mercus-Garrabet is covered by trees (64%) and grassland (22%), within 10 miles by trees (59%) and grassland (24%), and within 50 miles by trees (42%) and cropland (28%).
This report illustrates the typical weather in Mercus-Garrabet 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 2 weather stations near enough to contribute to our estimation of the temperature and dew point in Mercus-Garrabet.
For each station, the records are corrected for the elevation difference between that station and Mercus-Garrabet 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 Mercus-Garrabet is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Mercus-Garrabet and a given station.
Time zones for aiports and weather stations are provided by AskGeo.com .