Average Weather in January at Birmingham–Shuttlesworth International Airport Alabama, United States
The lowest daily average high temperature is 54°F on January 8.
Daily low temperatures are around 36°F, rarely falling below 21°F or exceeding 53°F. The lowest daily average low temperature is 35°F on January 23.
For reference, on July 22, the hottest day of the year, temperatures at Birmingham–Shuttlesworth International Airport typically range from 72°F to 90°F, while on January 23, the coldest day of the year, they range from 35°F to 54°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 at Birmingham–Shuttlesworth International Airport experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 53% throughout the month. The highest chance of overcast or mostly cloudy conditions is 54% on January 5.
The clearest day of the month is January 29, with clear, mostly clear, or partly cloudy conditions 48% of the time.
For reference, on January 5, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 54%, while on October 12, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 67%.
Cloud Cover Categories in January
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. At Birmingham–Shuttlesworth International Airport, the chance of a wet day over the course of January is essentially constant, remaining around 31% throughout.
For reference, the year's highest daily chance of a wet day is 44% on July 9, and its lowest chance is 20% on October 9.
Over the course of January at Birmingham–Shuttlesworth International Airport, the chance of a day with only rain remains an essentially constant 29% 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 1% throughout.
Probability of Precipitation in January
The average sliding 31-day rainfall during January at Birmingham–Shuttlesworth International Airport is gradually increasing, starting the month at 4.3 inches, when it rarely exceeds 7.7 inches or falls below 1.8 inches, and ending the month at 4.8 inches, when it rarely exceeds 7.2 inches or falls below 2.2 inches.
The lowest average 31-day accumulation is 4.3 inches on January 1.
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 at Birmingham–Shuttlesworth International Airport is essentially constant, remaining about 0.1 inches throughout, and rarely exceeding 0.5 inches or falling below -0.0 inches.
The highest average 31-day liquid-equivalent accumulation is 0.1 inches on January 19.
Average Monthly Liquid-Equivalent Snowfall in January
Over the course of January at Birmingham–Shuttlesworth International Airport, the length of the day is increasing. From the start to the end of the month, the length of the day increases by 35 minutes, implying an average daily increase of 1 minute, 10 seconds, and weekly increase of 8 minutes, 12 seconds.
The shortest day of the month is January 1, with 9 hours, 59 minutes of daylight and the longest day is January 31, with 10 hours, 34 minutes of daylight.
Hours of Daylight and Twilight in January
The latest sunrise of the month at Birmingham–Shuttlesworth International Airport is 6:52 AM on January 7 and the earliest sunrise is 8 minutes earlier at 6:43 AM on January 31.
The earliest sunset is 4:50 PM on January 1 and the latest sunset is 27 minutes later at 5:17 PM on January 31.
Daylight saving time is observed at Birmingham–Shuttlesworth International Airport during 2017, 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 5:37 AM and sets 14 hours, 23 minutes later, at 8:00 PM, while on December 21, the shortest day of the year, it rises at 6:47 AM and sets 9 hours, 56 minutes later, at 4:43 PM.
Sunrise & Sunset with Twilight in January
The chance that a given day will be muggy at Birmingham–Shuttlesworth International Airport is essentially constant during January, remaining around 0% throughout.
For reference, on July 25, the muggiest day of the year, there are muggy conditions 89% of the time, while on January 23, 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 at Birmingham–Shuttlesworth International Airport is essentially constant during January, remaining within 0.1 miles per hour of 4.8 miles per hour throughout.
For reference, on February 25, the windiest day of the year, the daily average wind speed is 5.2 miles per hour, while on August 4, the calmest day of the year, the daily average wind speed is 3.1 miles per hour.
Average Wind Speed in January
Wind Direction in January
The growing season at Birmingham–Shuttlesworth International Airport typically lasts for 7.6 months (233 days), from around March 24 to around November 12, rarely starting before February 27 or after April 16, and rarely ending before October 24 or after November 30.
The month of January at Birmingham–Shuttlesworth International Airport 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 at Birmingham–Shuttlesworth International Airport are gradually increasing during January, increasing by 75°F, from 0°F to 75°F, over the course of the month.
Growing Degree Days in January
The average daily incident shortwave solar energy at Birmingham–Shuttlesworth International Airport is gradually increasing during January, rising by 0.6 kWh, from 2.6 kWh to 3.2 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 Birmingham–Shuttlesworth International Airport are 33.562 deg latitude, -86.753 deg longitude, and 650 ft elevation.
The topography within 2 miles of Birmingham–Shuttlesworth International Airport contains only modest variations in elevation, with a maximum elevation change of 407 feet and an average elevation above sea level of 649 feet. Within 10 miles contains only modest variations in elevation (879 feet). Within 50 miles also contains very significant variations in elevation (1,781 feet).
The area within 2 miles of Birmingham–Shuttlesworth International Airport is covered by artificial surfaces (92%), within 10 miles by artificial surfaces (56%) and trees (40%), and within 50 miles by trees (69%) and cropland (17%).
This report illustrates the typical weather at Birmingham–Shuttlesworth International Airport 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
Birmingham–Shuttlesworth International Airport has a weather station that reported reliably enough during the analysis period that we have included it in our network. When available, historical temperature and dew point measurements are taken directly from this weather station. These records are obtained from NOAA's Integrated Surface Hourly data set, falling back on ICAO METAR records as required.
In the case of missing or erroneous measurements from this station, we fall back on records from nearby stations, adjusted according to typical seasonal and diurnal intra-station differences. For a given day of the year and hour of the day, the fallback station is selected to minimize the prediction error over the years for which there are measurements for both stations.
The stations on which we may fall back include but are not limited to Shelby County Airport; Cullman Regional Airport-Folsom Field; Northeast Alabama Regional Airport; Albertville, Albertville Municipal Airport; Centreville; Anniston Metropolitan Airport; Tuscaloosa Municipal Airport; and Thomas C Russell Field.
Time zones for aiports and weather stations are provided by AskGeo.com .