Average Weather in Montgomery Alabama, United States
In Montgomery, the temperature typically varies from 39°F to 92°F over the course of the year, and is rarely below 25°F or above 97°F.
The hot season lasts for 4.2 months, from May 19 to September 24, with an average daily high temperature above 85°F. The hottest day of the year is July 23, with an average high of 92°F and low of 74°F.
The cool season lasts for 2.8 months, from November 29 to February 23, with an average daily high temperature below 65°F. The coldest day of the year is January 17, with an average low of 39°F and high of 58°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
The length of the day in Montgomery varies significantly over the course of the year. In 2017, the shortest day is December 21, with 10 hours, 2 minutes of daylight; the longest day is June 21, with 14 hours, 17 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 5:37 AM on June 12, and the latest sunrise is 1 hour, 28 minutes later at 7:05 AM on November 4. The earliest sunset is at 4:39 PM on December 3, and the latest sunset is 3 hours, 17 minutes later at 7:56 PM on June 29.
Daylight saving time (DST) is observed in Montgomery during 2017, starting in the spring on March 12, lasting 7.8 months, and ending in the fall on November 5.
Sunrise & Sunset with Twilight and Daylight Saving Time
In Montgomery, the average percentage of the sky covered by clouds experiences mild seasonal variation over the course of the year.
The clearer part of the year in Montgomery begins around August 6 and lasts for 3.7 months, ending around November 27. On October 8, 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 27 and lasts for 8.3 months, ending around August 6. On January 3, the cloudiest day of the year, the sky is overcast or mostly cloudy 52% of the time, and clear, mostly clear, or partly cloudy 48% of the time.
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Montgomery varies throughout the year.
The wetter season lasts 6.3 months, from February 19 to August 27, with a greater than 33% chance of a given day being a wet day. The chance of a wet day peaks at 47% on July 9.
The drier season lasts 5.7 months, from August 27 to February 19. The smallest chance of a wet day is 19% on October 15.
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 47% 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 in the year. Montgomery experiences significant seasonal variation in monthly rainfall.
Rain falls throughout the year in Montgomery. The most rain falls during the 31 days centered around March 11, with an average total accumulation of 5.3 inches.
The least rain falls around October 17, with and average total accumulation of 2.7 inches.
Average Monthly Rainfall
We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.
Montgomery experiences very significant seasonal variation in the perceived humidity.
The muggier period of the year lasts for 5.2 months, from May 6 to October 11, during which time the comfort level is muggy, oppressive, or miserable at least 24% of the time. The muggiest day of the year is July 24, with muggy conditions 95% of the time.
The least muggy day of the year is January 30, with muggy conditions 1% of the time.
Humidity Comfort Levels
This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.
The average hourly wind speed in Montgomery experiences mildly seasonal variation over the course of the year.
The windier part of the year lasts for 7.6 months, from September 26 to May 14, with average wind speeds of more than 2.9 miles per hour. The windiest day of the year is February 26, with an average hourly wind speed of 3.5 miles per hour.
The calmer time of year lasts for 4.4 months, from May 14 to September 26. The calmest day of the year is August 6, with an average hourly wind speed of 2.2 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Montgomery varies throughout the year.
The wind is most often from the south for 3.6 months, from February 26 to June 15, with a peak percentage of 38% on May 4. The wind is most often from the east for 3.0 months, from August 13 to November 13, with a peak percentage of 45% on September 15. The wind is most often from the north for 3.5 months, from November 13 to February 26, with a peak percentage of 32% on January 28.
This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.
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 4.4 months, from April 7 to August 19, with an average daily incident shortwave energy per square meter above 5.9 kWh. The brightest day of the year is May 20, with an average of 6.8 kWh.
The darker period of the year lasts for 2.6 months, from November 14 to February 3, with an average daily incident shortwave energy per square meter below 3.5 kWh. The darkest day of the year is December 23, with an average of 2.7 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Montgomery are 32.367 deg latitude, -86.300 deg longitude, and 217 ft elevation.
The topography within 2 miles of Montgomery contains only modest variations in elevation, with a maximum elevation change of 203 feet, and an average elevation above sea level of 233 feet. Within 10 miles also contains only modest variations in elevation (335 feet). Within 50 miles contains very significant variations in elevation (1,165 feet).
The area within 2 miles of Montgomery is covered by artificial surfaces (99%), within 10 miles by artificial surfaces (38%) and cropland (33%), and within 50 miles by trees (72%) and cropland (19%).
This report illustrates the typical weather in Montgomery, 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 Montgomery.
For each station, the records are corrected for the elevation difference between that station and Montgomery 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 Montgomery is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Montgomery and a given station.
The stations contributing to this reconstruction are: Maxwell Air Force Base / Montgomery (94%, 5.0 kilometers, west), Troy Municipal Airport (2.3%, 63 kilometers, southeast), Thomas C Russell Field (1.9%, 69 kilometers, northeast), and Auburn-Opelika Robert G Pitts Airport (1.4%, 86 kilometers, east).
All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Tables of the Sun, Moon and Planets , by Jean Meeus.
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.
Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.
Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.
Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .
Time zones for aiports and weather stations are provided by AskGeo.com .