Average Weather in December in Lowell Arkansas, United States
Daily high temperatures decrease by 7°F, from 53°F to 46°F, rarely falling below 31°F or exceeding 66°F.
Daily low temperatures decrease by 6°F, from 36°F to 29°F, rarely falling below 14°F or exceeding 50°F.
For reference, on July 25, the hottest day of the year, temperatures in Lowell typically range from 70°F to 89°F, while on January 6, the coldest day of the year, they range from 29°F to 46°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 Lowell experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 48% throughout the month. The highest chance of overcast or mostly cloudy conditions is 50% on December 23.
The clearest day of the month is December 3, with clear, mostly clear, or partly cloudy conditions 54% of the time.
For reference, on February 12, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 50%, while on July 24, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 71%.
Cloud Cover Categories in December
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Lowell, the chance of a wet day over the course of December is decreasing, starting the month at 22% and ending it at 17%.
For reference, the year's highest daily chance of a wet day is 44% on May 27, and its lowest chance is 15% on January 13.
Over the course of December in Lowell, the chance of a day with only rain decreases from 20% to 13%, 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 Lowell is decreasing, starting the month at 3.1 inches, when it rarely exceeds 6.3 inches or falls below 0.7 inches, and ending the month at 2.2 inches, when it rarely exceeds 5.6 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 Lowell is essentially constant, remaining about 0.1 inches throughout, and rarely exceeding 0.5 inches or falling below -0.0 inches.
Average Monthly Liquid-Equivalent Snowfall in December
Over the course of December in Lowell, the length of the day is essentially constant. The shortest day of the month is December 21, with 9 hours, 41 minutes of daylight and the longest day is December 1, with 9 hours, 53 minutes of daylight.
Hours of Daylight and Twilight in December
The earliest sunrise of the month in Lowell is 7:09 AM on December 1 and the latest sunrise is 18 minutes later at 7:27 AM on December 31.
The earliest sunset is 5:01 PM on December 5 and the latest sunset is 10 minutes later at 5:11 PM on December 31.
Daylight saving time is observed in Lowell 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 5:59 AM and sets 14 hours, 38 minutes later, at 8:37 PM, while on December 21, the shortest day of the year, it rises at 7:24 AM and sets 9 hours, 41 minutes later, at 5:05 PM.
Sunrise & Sunset with Twilight and Daylight Saving Time in December
The chance that a given day will be muggy in Lowell is essentially constant during December, remaining around 0% throughout.
For reference, on July 16, the muggiest day of the year, there are muggy conditions 73% of the time, while on November 20, 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 Lowell is essentially constant during December, remaining within 0.1 miles per hour of 6.8 miles per hour throughout.
For reference, on March 10, the windiest day of the year, the daily average wind speed is 7.7 miles per hour, while on August 3, the calmest day of the year, the daily average wind speed is 4.5 miles per hour.
Average Wind Speed in December
Wind Direction in December
The growing season in Lowell typically lasts for 7.0 months (212 days), from around April 3 to around November 1, rarely starting before March 13 or after April 21, and rarely ending before October 13 or after November 23.
The month of December in Lowell is very likely fully outside of the growing season, with the chance that a given day is in the growing season gradually decreasing from 4% 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 Lowell are gradually increasing during December, increasing by 40°F, from 4,493°F to 4,532°F, over the course of the month.
Growing Degree Days in December
The average daily incident shortwave solar energy in Lowell is essentially constant during December, remaining within 0.1 kWh of 2.5 kWh throughout.
The lowest average daily incident shortwave solar energy during December is 2.4 kWh on December 23.
Average Daily Incident Shortwave Solar Energy in December
For the purposes of this report, the geographical coordinates of Lowell are 36.255 deg latitude, -94.131 deg longitude, and 1,319 ft elevation.
The topography within 2 miles of Lowell contains only modest variations in elevation, with a maximum elevation change of 194 feet and an average elevation above sea level of 1,331 feet. Within 10 miles contains only modest variations in elevation (617 feet). Within 50 miles contains significant variations in elevation (2,172 feet).
The area within 2 miles of Lowell is covered by cropland (70%) and artificial surfaces (26%), within 10 miles by cropland (49%) and trees (25%), and within 50 miles by trees (57%) and cropland (39%).
This report illustrates the typical weather in Lowell 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 4 weather stations near enough to contribute to our estimation of the temperature and dew point in Lowell.
For each station, the records are corrected for the elevation difference between that station and Lowell 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 Lowell is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Lowell and a given station.
The stations contributing to this reconstruction are: Springdale Municipal Airport (35%, 10 kilometers, south); Bentonville Municipal Airport (23%, 13 kilometers, northwest); Rogers Municipal Airport (23%, 13 kilometers, north); and Northwest Arkansas Regional Airport (18%, 15 kilometers, west).
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 .