Average Weather at Andalusia, Andalusia-Opp Municipal Airport Alabama, United States
At Andalusia, Andalusia-Opp Municipal Airport, the summers are long, hot, and oppressive; the winters are short and cold; and it is wet and partly cloudy year round. Over the course of the year, the temperature typically varies from 42°F to 92°F and is rarely below 28°F or above 98°F.
The hot season lasts for 4.2 months, from May 18 to September 24, with an average daily high temperature above 86°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 2.9 months, from November 30 to February 24, with an average daily high temperature below 68°F. The coldest day of the year is January 17, with an average low of 42°F and high of 62°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 Andalusia, Andalusia-Opp Municipal 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 Andalusia, Andalusia-Opp Municipal Airport begins around August 29 and lasts for 3.3 months, ending around December 8. On October 27, 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 December 8 and lasts for 8.7 months, ending around August 29. On July 13, 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 Andalusia, Andalusia-Opp Municipal Airport varies significantly throughout the year.
The wetter season lasts 2.8 months, from June 5 to August 31, with a greater than 39% chance of a given day being a wet day. The chance of a wet day peaks at 57% on July 27.
The drier season lasts 9.2 months, from August 31 to June 5. The smallest chance of a wet day is 20% 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 57% on July 27.
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. Andalusia, Andalusia-Opp Municipal Airport experiences significant seasonal variation in monthly rainfall.
Rain falls throughout the year at Andalusia, Andalusia-Opp Municipal Airport. The most rain falls during the 31 days centered around March 7, with an average total accumulation of 5.4 inches.
The least rain falls around October 18, with an average total accumulation of 3.1 inches.
Average Monthly Rainfall
The length of the day at Andalusia, Andalusia-Opp Municipal Airport varies significantly over the course of the year. In 2017, the shortest day is December 21, with 10 hours, 7 minutes of daylight; the longest day is June 20, with 14 hours, 11 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 5:40 AM on June 11, and the latest sunrise is 1 hour, 23 minutes later at 7:03 AM on November 4. The earliest sunset is at 4:42 PM on December 3, and the latest sunset is 3 hours, 12 minutes later at 7:53 PM on June 29.
Daylight saving time (DST) is observed at Andalusia, Andalusia-Opp Municipal Airport 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
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.
Andalusia, Andalusia-Opp Municipal Airport experiences extreme seasonal variation in the perceived humidity.
The muggier period of the year lasts for 5.2 months, from May 8 to October 14, during which time the comfort level is muggy, oppressive, or miserable at least 25% of the time. The muggiest day of the year is July 24, with muggy conditions 96% 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 at Andalusia, Andalusia-Opp Municipal Airport experiences mild seasonal variation over the course of the year.
The windier part of the year lasts for 7.7 months, from September 26 to May 16, with average wind speeds of more than 2.4 miles per hour. The windiest day of the year is February 25, with an average hourly wind speed of 2.9 miles per hour.
The calmer time of year lasts for 4.3 months, from May 16 to September 26. The calmest day of the year is August 8, with an average hourly wind speed of 1.8 miles per hour.
Average Wind Speed
The predominant average hourly wind direction at Andalusia, Andalusia-Opp Municipal Airport varies throughout the year.
The wind is most often from the south for 4.2 months, from February 28 to July 2, with a peak percentage of 40% on May 4. The wind is most often from the east for 2.4 months, from August 15 to October 26, with a peak percentage of 44% on September 15. The wind is most often from the north for 4.1 months, from October 26 to February 28, with a peak percentage of 37% on January 1.
Andalusia, Andalusia-Opp Municipal Airport is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.
The average water temperature experiences significant seasonal variation over the course of the year.
The time of year with warmer water lasts for 3.9 months, from June 8 to October 6, with an average temperature above 80°F. The day of the year with the warmest water is August 13, with an average temperature of 85°F.
The time of year with cooler water lasts for 3.6 months, from December 17 to April 6, with an average temperature below 67°F. The day of the year with the coolest water is February 19, with an average temperature of 63°F.
Average Water Temperature
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 3.1 months, from April 5 to July 8, with an average daily incident shortwave energy per square meter above 5.9 kWh. The brightest day of the year is May 19, with an average of 6.7 kWh.
The darker period of the year lasts for 2.5 months, from November 15 to February 2, with an average daily incident shortwave energy per square meter below 3.7 kWh. The darkest day of the year is December 23, with an average of 2.9 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Andalusia, Andalusia-Opp Municipal Airport are 31.300 deg latitude, -86.383 deg longitude, and 279 ft elevation.
The topography within 2 miles of Andalusia, Andalusia-Opp Municipal Airport contains only modest variations in elevation, with a maximum elevation change of 138 feet and an average elevation above sea level of 285 feet. Within 10 miles also contains only modest variations in elevation (305 feet). Within 50 miles contains only modest variations in elevation (646 feet).
The area within 2 miles of Andalusia, Andalusia-Opp Municipal Airport is covered by cropland (51%) and trees (46%), within 10 miles by trees (53%) and cropland (40%), and within 50 miles by trees (73%) and cropland (21%).
This report illustrates the typical weather at Andalusia, Andalusia-Opp Municipal 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
Andalusia, Andalusia-Opp Municipal 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 Florala Municipal Airport; Bob Sikes Airport; Mac Crenshaw Memorial Airport; Fort Rucker, Lowe Army Heliport; Middleton Field; Duke Field; Troy Municipal Airport; and Cairns Army Airfield (Fort Rucker).
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 .
Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.