Average Weather in January in Charleston Arkansas, United States
Daily high temperatures increase by 2°F, from 50°F to 52°F, rarely falling below 35°F or exceeding 67°F. The lowest daily average high temperature is 50°F on January 6.
Daily low temperatures are around 32°F, rarely falling below 19°F or exceeding 47°F. The lowest daily average low temperature is 32°F on January 7.
For reference, on July 22, the hottest day of the year, temperatures in Charleston typically range from 72°F to 93°F, while on January 7, the coldest day of the year, they range from 32°F to 50°F.
Average High and Low Temperature in January
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on January. 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 January
The month of January in Charleston experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 47% throughout the month.
The clearest day of the month is January 16, with clear, mostly clear, or partly cloudy conditions 54% of the time.
For reference, on March 1, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 49%, while on July 25, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 72%.
Cloud Cover Categories in January
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Charleston, the chance of a wet day over the course of January is essentially constant, remaining around 19% throughout.
For reference, the year's highest daily chance of a wet day is 44% on May 21, and its lowest chance is 18% on January 21.
Over the course of January in Charleston, the chance of a day with only rain remains an essentially constant 16% throughout, 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 January
The average sliding 31-day rainfall during January in Charleston is gradually decreasing, starting the month at 2.7 inches, when it rarely exceeds 6.2 inches or falls below 0.6 inches, and ending the month at 2.5 inches, when it rarely exceeds 4.9 inches or falls below 0.6 inches.
The lowest average 31-day accumulation is 2.4 inches on January 21.
Average Monthly Rainfall in January
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 January in Charleston 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 January
Over the course of January in Charleston, the length of the day is increasing. From the start to the end of the month, the length of the day increases by 37 minutes, implying an average daily increase of 1 minute, 15 seconds, and weekly increase of 8 minutes, 44 seconds.
The shortest day of the month is January 1, with 9 hours, 50 minutes of daylight and the longest day is January 31, with 10 hours, 27 minutes of daylight.
Hours of Daylight and Twilight in January
The latest sunrise of the month in Charleston is 7:25 AM on January 7 and the earliest sunrise is 9 minutes earlier at 7:16 AM on January 31.
The earliest sunset is 5:14 PM on January 1 and the latest sunset is 29 minutes later at 5:43 PM on January 31.
Daylight saving time is observed in Charleston during 2018, but it neither starts nor ends during January, so the entire month is in standard time.
For reference, on June 21, the longest day of the year, the Sun rises at 6:01 AM and sets 14 hours, 32 minutes later, at 8:34 PM, while on December 21, the shortest day of the year, it rises at 7:21 AM and sets 9 hours, 47 minutes later, at 5:07 PM.
Sunrise & Sunset with Twilight in January
The chance that a given day will be muggy in Charleston is essentially constant during January, remaining around 0% throughout.
For reference, on July 22, the muggiest day of the year, there are muggy conditions 86% of the time, while on January 19, the least muggy day of the year, there are muggy conditions 0% of the time.
Humidity Comfort Levels in January
The average hourly wind speed in Charleston is essentially constant during January, remaining within 0.1 miles per hour of 5.7 miles per hour throughout.
For reference, on March 23, the windiest day of the year, the daily average wind speed is 6.4 miles per hour, while on August 3, the calmest day of the year, the daily average wind speed is 3.9 miles per hour.
Average Wind Speed in January
Wind Direction in January
The growing season in Charleston typically lasts for 7.5 months (229 days), from around March 25 to around November 9, rarely starting before March 3 or after April 17, and rarely ending before October 20 or after November 29.
The month of January in Charleston is reliably fully outside of the growing season.
Time Spent in Various Temperature Bands and the Growing Season in January
The average accumulated growing degree days in Charleston are gradually increasing during January, increasing by 45°F, from 0°F to 46°F, over the course of the month.
Growing Degree Days in January
The average daily incident shortwave solar energy in Charleston is gradually increasing during January, rising by 0.6 kWh, from 2.5 kWh to 3.1 kWh, over the course of the month.
Average Daily Incident Shortwave Solar Energy in January
For the purposes of this report, the geographical coordinates of Charleston are 35.297 deg latitude, -94.036 deg longitude, and 495 ft elevation.
The topography within 2 miles of Charleston contains only modest variations in elevation, with a maximum elevation change of 200 feet and an average elevation above sea level of 501 feet. Within 10 miles contains only modest variations in elevation (814 feet). Within 50 miles contains significant variations in elevation (2,467 feet).
The area within 2 miles of Charleston is covered by cropland (87%), within 10 miles by cropland (60%) and trees (34%), and within 50 miles by trees (64%) and cropland (31%).
This report illustrates the typical weather in Charleston 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 Charleston.
For each station, the records are corrected for the elevation difference between that station and Charleston 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 Charleston is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Charleston and a given station.
The stations contributing to this reconstruction are: Fort Smith Municipal Airport (55%, 30 kilometers, west); Drake Field (12%, 80 kilometers, north); Mena Intermountain Municipal Airport (11%, 85 kilometers, south); Russellville Municipal Airport (11%, 86 kilometers, east); and Mount Ida (10%, 93 kilometers, southeast).
Time zones for aiports and weather stations are provided by AskGeo.com .