Average Weather at Birmingham–Shuttlesworth International Airport Alabama, United States
At Birmingham–Shuttlesworth International Airport, the summers are long, hot, and muggy; the winters are short, cold, and wet; and it is partly cloudy year round. Over the course of the year, the temperature typically varies from 35°F to 90°F and is rarely below 21°F or above 96°F.
Based on the tourism score, the best times of year to visit Birmingham–Shuttlesworth International Airport for warm-weather activities are from late April to early June and from late August to mid October.
The hot season lasts for 3.9 months, from May 25 to September 22, with an average daily high temperature above 83°F. The hottest day of the year is July 22, with an average high of 90°F and low of 72°F.
The cool season lasts for 2.9 months, from November 29 to February 24, with an average daily high temperature below 61°F. The coldest day of the year is January 23, with an average low of 35°F and high of 54°F.
Average High and Low Temperature
The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.
Average Hourly Temperature
At Birmingham–Shuttlesworth International Airport, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year.
The clearer part of the year at Birmingham–Shuttlesworth International Airport begins around July 13 and lasts for 4.3 months, ending around November 24. On October 12, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 67% of the time, and overcast or mostly cloudy 33% of the time.
The cloudier part of the year begins around November 24 and lasts for 7.7 months, ending around July 13. On January 5, the cloudiest day of the year, the sky is overcast or mostly cloudy 54% of the time, and clear, mostly clear, or partly cloudy 46% of the time.
Cloud Cover Categories
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days at Birmingham–Shuttlesworth International Airport varies throughout the year.
The wetter season lasts 5.1 months, from March 21 to August 25, with a greater than 32% chance of a given day being a wet day. The chance of a wet day peaks at 44% on July 9.
The drier season lasts 6.9 months, from August 25 to March 21. The smallest chance of a wet day is 20% on October 8.
Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 44% on July 9.
Daily Chance of Precipitation
To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Birmingham–Shuttlesworth International Airport experiences significant seasonal variation in monthly rainfall.
Rain falls throughout the year at Birmingham–Shuttlesworth International Airport. The most rain falls during the 31 days centered around February 28, with an average total accumulation of 5.1 inches.
The least rain falls around August 23, with an average total accumulation of 2.9 inches.
Average Monthly Rainfall
The sliding 31-day liquid-equivalent quantity of snowfall at Birmingham–Shuttlesworth International Airport does not vary significantly over the course of the year, staying within 0.1 inches of 0.1 inches throughout.
Average Liquid-Equivalent Monthly Snowfall
The length of the day at Birmingham–Shuttlesworth International Airport varies significantly over the course of the year. In 2018, the shortest day is December 21, with 9 hours, 56 minutes of daylight; the longest day is June 21, with 14 hours, 23 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 5:36 AM on June 12, and the latest sunrise is 1 hour, 31 minutes later at 7:07 AM on November 3. The earliest sunset is at 4:38 PM on December 5, and the latest sunset is 3 hours, 23 minutes later at 8:01 PM on June 29.
Daylight saving time (DST) is observed at Birmingham–Shuttlesworth International Airport during 2018, starting in the spring on March 11, lasting 7.8 months, and ending in the fall on November 4.
Sunrise & Sunset with Twilight and Daylight Saving Time
Birmingham–Shuttlesworth International Airport experiences extreme seasonal variation in the perceived humidity.
The muggier period of the year lasts for 4.6 months, from May 14 to October 2, during which time the comfort level is muggy, oppressive, or miserable at least 22% of the time. The muggiest day of the year is July 25, with muggy conditions 89% of the time.
The least muggy day of the year is January 24, when muggy conditions are essentially unheard of.
Humidity Comfort Levels
The average hourly wind speed at Birmingham–Shuttlesworth International Airport experiences mild seasonal variation over the course of the year.
The windier part of the year lasts for 7.2 months, from October 8 to May 14, with average wind speeds of more than 4.1 miles per hour. The windiest day of the year is February 25, with an average hourly wind speed of 5.2 miles per hour.
The calmer time of year lasts for 4.8 months, from May 14 to October 8. The calmest day of the year is August 4, with an average hourly wind speed of 3.1 miles per hour.
Average Wind Speed
The predominant average hourly wind direction at Birmingham–Shuttlesworth International Airport varies throughout the year.
The wind is most often from the south for 4.3 months, from February 26 to July 4; for 2.7 weeks, from July 28 to August 16; and for 1.3 months, from November 11 to December 19, with a peak percentage of 45% on May 4. The wind is most often from the east for 1.6 months, from August 16 to October 4, with a peak percentage of 36% on September 15. The wind is most often from the north for 1.2 months, from October 4 to November 11 and for 2.2 months, from December 19 to February 26, with a peak percentage of 33% on October 12.
Best Time of Year to Visit
To characterize how pleasant the weather is at Birmingham–Shuttlesworth International Airport throughout the year, we compute two travel scores.
The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best times of year to visit Birmingham–Shuttlesworth International Airport for general outdoor tourist activities are from late April to early June and from late August to mid October, with a peak score in the third week of September.
The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit Birmingham–Shuttlesworth International Airport for hot-weather activities is from early June to mid September, with a peak score in the last week of August.
For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.
Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.
Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.
Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.
Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.
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.
Time Spent in Various Temperature Bands and the Growing Season
Based on growing degree days alone, the first spring blooms at Birmingham–Shuttlesworth International Airport should appear around February 5, only rarely appearing before January 19 or after February 24.
Growing Degree Days
The average daily incident shortwave solar energy experiences significant seasonal variation over the course of the year.
The brighter period of the year lasts for 4.7 months, from April 9 to August 31, with an average daily incident shortwave energy per square meter above 5.8 kWh. The brightest day of the year is June 5, with an average of 6.6 kWh.
The darker period of the year lasts for 2.7 months, from November 14 to February 4, with an average daily incident shortwave energy per square meter below 3.4 kWh. The darkest day of the year is December 25, with an average of 2.5 kWh.
Average Daily Incident Shortwave Solar Energy
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, 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 .