Average Weather in December in Chamberlain South Dakota, United States
Daily high temperatures decrease by 8°F, from 39°F to 31°F, rarely falling below 10°F or exceeding 55°F.
Daily low temperatures decrease by 8°F, from 21°F to 13°F, rarely falling below -6°F or exceeding 33°F.
For reference, on July 20, the hottest day of the year, temperatures in Chamberlain typically range from 65°F to 89°F, while on January 2, the coldest day of the year, they range from 13°F to 31°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 Chamberlain experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 49% throughout the month.
The clearest day of the month is December 16, with clear, mostly clear, or partly cloudy conditions 52% of the time.
For reference, on March 15, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 53%, while on July 25, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 76%.
Cloud Cover Categories in December
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 Chamberlain, the chance of a wet day over the course of December is gradually decreasing, starting the month at 7% and ending it at 5%.
For reference, the year's highest daily chance of a wet day is 40% on June 7, and its lowest chance is 4% on January 25.
Over the course of December in Chamberlain, the chance of a day with only rain remains an essentially constant 1% 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 4% throughout.
Probability of Precipitation in December
The average sliding 31-day rainfall during December in Chamberlain is essentially constant, remaining about 0.1 inches throughout, and rarely exceeding 0.5 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 Chamberlain is essentially constant, remaining about 0.2 inches throughout, and rarely exceeding 0.6 inches or falling to 0.0 inches.
The highest average 31-day liquid-equivalent accumulation is 0.2 inches on December 1.
Average Monthly Liquid-Equivalent Snowfall in December
Over the course of December in Chamberlain, the length of the day is essentially constant. The shortest day of the month is December 20, with 8 hours, 55 minutes of daylight and the longest day is December 1, with 9 hours, 9 minutes of daylight.
Hours of Daylight and Twilight in December
The earliest sunrise of the month in Chamberlain is 7:51 AM on December 1 and the latest sunrise is 20 minutes later at 8:11 AM on December 31.
The earliest sunset is 4:59 PM on December 9 and the latest sunset is 10 minutes later at 5:09 PM on December 31.
Daylight saving time is observed in Chamberlain 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 5:55 AM and sets 15 hours, 28 minutes later, at 9:23 PM, while on December 21, the shortest day of the year, it rises at 8:08 AM and sets 8 hours, 55 minutes later, at 5:02 PM.
Sunrise & Sunset with Twilight and Daylight Saving Time in December
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
The chance that a given day will be muggy in Chamberlain is essentially constant during December, remaining around 0% throughout.
For reference, on July 25, the muggiest day of the year, there are muggy conditions 30% 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
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The average hourly wind speed in Chamberlain is essentially constant during December, remaining within 0.2 miles per hour of 11.1 miles per hour throughout.
For reference, on April 8, the windiest day of the year, the daily average wind speed is 12.5 miles per hour, while on July 26, the calmest day of the year, the daily average wind speed is 9.5 miles per hour.
The lowest daily average wind speed during December is 10.9 miles per hour on December 5.
Average Wind Speed in December
The hourly average wind direction in Chamberlain throughout December is predominantly from the west, with a peak proportion of 41% on December 31.
Wind Direction in December
The growing season in Chamberlain typically lasts for 5.4 months (164 days), from around April 28 to around October 8, rarely starting before April 7 or after May 18, and rarely ending before September 20 or after October 28.
The month of December in Chamberlain 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 Chamberlain are essentially constant during December, remaining within 1°F of 3,203°F throughout.
Growing Degree Days in December
The average daily incident shortwave solar energy in Chamberlain is essentially constant during December, remaining within 0.1 kWh of 1.8 kWh throughout.
The lowest average daily incident shortwave solar energy during December is 1.7 kWh on December 23.
Average Daily Incident Shortwave Solar Energy in December
For the purposes of this report, the geographical coordinates of Chamberlain are 43.811 deg latitude, -99.331 deg longitude, and 1,404 ft elevation.
The topography within 2 miles of Chamberlain contains only modest variations in elevation, with a maximum elevation change of 387 feet and an average elevation above sea level of 1,480 feet. Within 10 miles contains only modest variations in elevation (512 feet). Within 50 miles contains significant variations in elevation (1,191 feet).
The area within 2 miles of Chamberlain is covered by grassland (58%) and water (32%), within 10 miles by grassland (60%) and cropland (29%), and within 50 miles by grassland (69%) and cropland (28%).
This report illustrates the typical weather in Chamberlain, 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 Chamberlain.
For each station, the records are corrected for the elevation difference between that station and Chamberlain 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 Chamberlain is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Chamberlain and a given station.
The stations contributing to this reconstruction are: Chamberlain, Chamberlain Municipal Airport (94%, 5.0 kilometers, south); Pierre Municipal Airport (3.2%, 99 kilometers, northwest); and Huron Regional Airport (2.7%, 110 kilometers, northeast).
Time zones for airports and weather stations are provided by AskGeo.com .