Average Weather in December in Richmond Minnesota, United States
Daily high temperatures decrease by 9°F, from 31°F to 22°F, rarely falling below 4°F or exceeding 45°F.
Daily low temperatures decrease by 10°F, from 17°F to 7°F, rarely falling below -13°F or exceeding 32°F.
For reference, on July 18, the hottest day of the year, temperatures in Richmond typically range from 61°F to 81°F, while on January 20, the coldest day of the year, they range from 5°F to 21°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 Richmond 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 highest chance of overcast or mostly cloudy conditions is 60% on December 29.
The clearest day of the month is December 1, with clear, mostly clear, or partly cloudy conditions 43% of the time.
For reference, on February 5, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 61%, while on July 28, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 73%.
Cloud Cover Categories in December
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Richmond, the chance of a wet day over the course of December is gradually decreasing, starting the month at 11% and ending it at 9%.
For reference, the year's highest daily chance of a wet day is 40% on June 20, and its lowest chance is 7% on January 28.
Over the course of December in Richmond, the chance of a day with only rain remains an essentially constant 2% throughout, the chance of a day with mixed snow and rain remains an essentially constant 1% throughout, and the chance of a day with only snow remains an essentially constant 7% throughout.
Probability of Precipitation in December
The average sliding 31-day rainfall during December in Richmond is essentially constant, remaining about 0.2 inches throughout, and rarely exceeding 1.0 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 Richmond is essentially constant, remaining about 0.4 inches throughout, and rarely exceeding 1.1 inches or falling to 0.0 inches.
The highest average 31-day liquid-equivalent accumulation is 0.4 inches on December 1.
Average Monthly Liquid-Equivalent Snowfall in December
Over the course of December in Richmond, the length of the day is essentially constant. The shortest day of the month is December 21, with 8 hours, 42 minutes of daylight and the longest day is December 1, with 8 hours, 59 minutes of daylight.
Hours of Daylight and Twilight in December
The earliest sunrise of the month in Richmond is 7:37 AM on December 1 and the latest sunrise is 20 minutes later at 7:57 AM on December 31.
The earliest sunset is 4:34 PM on December 10 and the latest sunset is 10 minutes later at 4:44 PM on December 31.
Daylight saving time is observed in Richmond during 2018, 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 5:29 AM and sets 15 hours, 41 minutes later, at 9:10 PM, while on December 21, the shortest day of the year, it rises at 7:55 AM and sets 8 hours, 42 minutes later, at 4:37 PM.
Sunrise & Sunset with Twilight and Daylight Saving Time in December
The chance that a given day will be muggy in Richmond is essentially constant during December, remaining around 0% throughout.
For reference, on July 20, the muggiest day of the year, there are muggy conditions 28% of the time, while on October 25, 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 Richmond is gradually increasing during December, increasing from 11.4 miles per hour to 11.9 miles per hour over the course of the month.
For reference, on April 2, the windiest day of the year, the daily average wind speed is 12.6 miles per hour, while on August 1, the calmest day of the year, the daily average wind speed is 8.7 miles per hour.
Average Wind Speed in December
Wind Direction in December
The growing season in Richmond typically lasts for 5.0 months (153 days), from around May 2 to around October 2, rarely starting before April 14 or after May 21, and rarely ending before September 15 or after October 19.
The month of December in Richmond is reliably fully outside of the growing season.
Time Spent in Various Temperature Bands and the Growing Season in December
The average accumulated growing degree days in Richmond are essentially constant during December, remaining within 1°F of 2,458°F throughout.
Growing Degree Days in December
The average daily incident shortwave solar energy in Richmond is essentially constant during December, remaining within 0.1 kWh of 1.5 kWh throughout.
The lowest average daily incident shortwave solar energy during December is 1.4 kWh on December 20.
Average Daily Incident Shortwave Solar Energy in December
For the purposes of this report, the geographical coordinates of Richmond are 45.454 deg latitude, -94.518 deg longitude, and 1,115 ft elevation.
The topography within 2 miles of Richmond contains only modest variations in elevation, with a maximum elevation change of 174 feet and an average elevation above sea level of 1,115 feet. Within 10 miles also contains only modest variations in elevation (390 feet). Within 50 miles contains only modest variations in elevation (630 feet).
The area within 2 miles of Richmond is covered by cropland (73%) and water (13%), within 10 miles by cropland (78%) and trees (14%), and within 50 miles by cropland (81%) and trees (11%).
This report illustrates the typical weather in Richmond 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 Richmond.
For each station, the records are corrected for the elevation difference between that station and Richmond 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 Richmond is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Richmond and a given station.
The stations contributing to this reconstruction are: Paynesville Municipal Airport (43%, 20 kilometers, southwest); Litchfield Municipal Airport (19%, 34 kilometers, south); St. Cloud Regional Airport (17%, 38 kilometers, east); Maple Lake Municipal Airport (12%, 48 kilometers, southeast); and Little Falls, Little Falls/Morrison County Airport-Lindbergh Field (9%, 57 kilometers, north).
All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.
Time zones for aiports and weather stations are provided by AskGeo.com .