December Weather in Río Grande Mexico
Daily high temperatures decrease by 3°F, from 73°F to 70°F, rarely falling below 63°F or exceeding 79°F.
Daily low temperatures are around 38°F, rarely falling below 29°F or exceeding 46°F.
For reference, on May 24, the hottest day of the year, temperatures in Río Grande typically range from 57°F to 87°F, while on January 7, the coldest day of the year, they range from 37°F to 70°F.
Average High and Low Temperature in December in Río Grande
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 in Río Grande
The month of December in Río Grande experiences gradually increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 41% to 46%. The highest chance of overcast or mostly cloudy conditions is 48% on December 19.
The clearest day of the month is December 1, with clear, mostly clear, or partly cloudy conditions 59% of the time.
For reference, on September 6, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 71%, while on May 24, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 72%.
Cloud Cover Categories in December in Río Grande
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 Río Grande, the chance of a wet day over the course of December is essentially constant, remaining around 5% throughout.
For reference, the year's highest daily chance of a wet day is 41% on July 16, and its lowest chance is 2% on April 8.
Probability of Precipitation in December in Río Grande
The average sliding 31-day rainfall during December in Río Grande is essentially constant, remaining about 0.3 inches throughout, and rarely exceeding 0.9 inches.
The lowest average 31-day accumulation is 0.2 inches on December 17.
Average Monthly Rainfall in December in Río Grande
Over the course of December in Río Grande, the length of the day is essentially constant. The shortest day of the month is December 21, with 10 hours, 40 minutes of daylight and the longest day is December 1, with 10 hours, 46 minutes of daylight.
Hours of Daylight and Twilight in December in Río Grande
The earliest sunrise of the month in Río Grande is 7:18 AM on December 1 and the latest sunrise is 16 minutes later at 7:34 AM on December 31.
The earliest sunset is 6:04 PM on December 1 and the latest sunset is 12 minutes later at 6:16 PM on December 31.
Daylight saving time is observed in Río Grande during 2021, 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 7:05 AM and sets 13 hours, 37 minutes later, at 8:42 PM, while on December 21, the shortest day of the year, it rises at 7:30 AM and sets 10 hours, 40 minutes later, at 6:10 PM.
Sunrise & Sunset with Twilight in December in Río Grande
The figure below presents a compact representation of key lunar data for December 2021. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon.
Moon Rise, Set & Phases in December in Río Grande
The chance that a given day will be muggy in Río Grande is essentially constant during December, remaining around 0% throughout.
For reference, on August 29, the muggiest day of the year, there are muggy conditions 0% 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 December in Río Grande
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The average hourly wind speed in Río Grande is gradually increasing during December, increasing from 8.5 miles per hour to 9.0 miles per hour over the course of the month.
For reference, on March 22, the windiest day of the year, the daily average wind speed is 10.4 miles per hour, while on October 11, the calmest day of the year, the daily average wind speed is 7.4 miles per hour.
Average Wind Speed in December in Río Grande
The hourly average wind direction in Río Grande throughout December is predominantly from the west, with a peak proportion of 44% on December 29.
Wind Direction in December in Río Grande
The growing season in Río Grande typically lasts for 9.1 months (276 days), from around February 23 to around November 25, rarely starting before January 26 or after March 25, and rarely ending before October 31 or after December 25.
The month of December in Río Grande is more likely than not fully outside of the growing season, with the chance that a given day is in the growing season rapidly decreasing from 40% to 6% over the course of the month.
Time Spent in Various Temperature Bands and the Growing Season in December in Río Grande
The average accumulated growing degree days in Río Grande are increasing during December, increasing by 216°F, from 5,101°F to 5,317°F, over the course of the month.
Growing Degree Days in December in Río Grande
The average daily incident shortwave solar energy in Río Grande is essentially constant during December, remaining within 0.1 kWh of 4.5 kWh throughout.
The lowest average daily incident shortwave solar energy during December is 4.4 kWh on December 20.
Average Daily Incident Shortwave Solar Energy in December in Río Grande
For the purposes of this report, the geographical coordinates of Río Grande are 23.826 deg latitude, -103.030 deg longitude, and 6,135 ft elevation.
The topography within 2 miles of Río Grande contains only modest variations in elevation, with a maximum elevation change of 315 feet and an average elevation above sea level of 6,163 feet. Within 10 miles contains only modest variations in elevation (1,302 feet). Within 50 miles contains very significant variations in elevation (5,059 feet).
The area within 2 miles of Río Grande is covered by grassland (58%), shrubs (23%), and cropland (16%), within 10 miles by grassland (56%) and shrubs (41%), and within 50 miles by grassland (52%) and shrubs (41%).
This report illustrates the typical weather in Río Grande, 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 Río Grande.
For each station, the records are corrected for the elevation difference between that station and Río Grande 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 Río Grande is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Río Grande and a given station.
The stations contributing to this reconstruction are: General Leobardo C. Ruiz International Airport (MMZC, 62%, 109 kilometers, south) and Durango International Airport (MMDO, 38%, 156 kilometers, west).
Time zones for airports and weather stations are provided by AskGeo.com .