Average Weather in Chatom Alabama, United States
In Chatom, 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 39°F to 92°F and is rarely below 24°F or above 97°F.
Based on the tourism score, the best times of year to visit Chatom for warm-weather activities are from mid April to late May and from mid September to late October.
The hot season lasts for 4.2 months, from May 19 to September 25, 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 72°F.
The cool season lasts for 2.8 months, from November 30 to February 23, with an average daily high temperature below 66°F. The coldest day of the year is January 17, with an average low of 39°F and high of 59°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
In Chatom, 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 in Chatom begins around August 27 and lasts for 3.3 months, ending around December 5. On October 12, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 68% of the time, and overcast or mostly cloudy 32% of the time.
The cloudier part of the year begins around December 5 and lasts for 8.7 months, ending around August 27. On July 12, the cloudiest day of the year, the sky is overcast or mostly cloudy 53% of the time, and clear, mostly clear, or partly cloudy 47% 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 in Chatom varies significantly throughout the year.
The wetter season lasts 3.0 months, from May 29 to August 30, with a greater than 38% chance of a given day being a wet day. The chance of a wet day peaks at 55% on July 22.
The drier season lasts 9.0 months, from August 30 to May 29. 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 55% on July 22.
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. Chatom experiences significant seasonal variation in monthly rainfall.
Rain falls throughout the year in Chatom. The most rain falls during the 31 days centered around March 11, with an average total accumulation of 5.5 inches.
The least rain falls around October 7, with an average total accumulation of 3.1 inches.
Average Monthly Rainfall
The length of the day in Chatom varies significantly over the course of the year. In 2018, the shortest day is December 21, with 10 hours, 6 minutes of daylight; the longest day is June 21, with 14 hours, 12 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 5:47 AM on June 11, and the latest sunrise is 1 hour, 23 minutes later at 7:10 AM on November 3. The earliest sunset is at 4:49 PM on December 4, and the latest sunset is 3 hours, 12 minutes later at 8:01 PM on June 30.
Daylight saving time (DST) is observed in Chatom 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
Chatom experiences extreme seasonal variation in the perceived humidity.
The muggier period of the year lasts for 5.4 months, from May 1 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 23, with muggy conditions 97% of the time.
The least muggy day of the year is January 29, with muggy conditions 2% of the time.
Humidity Comfort Levels
The average hourly wind speed in Chatom experiences mild seasonal variation over the course of the year.
The windier part of the year lasts for 7.8 months, from September 27 to May 19, with average wind speeds of more than 3.6 miles per hour. The windiest day of the year is March 7, with an average hourly wind speed of 4.4 miles per hour.
The calmer time of year lasts for 4.2 months, from May 19 to September 27. The calmest day of the year is July 29, with an average hourly wind speed of 2.8 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Chatom varies throughout the year.
The wind is most often from the south for 5.9 months, from February 26 to August 23, with a peak percentage of 49% on May 21. The wind is most often from the east for 1.1 months, from August 23 to September 26, with a peak percentage of 35% on September 19. The wind is most often from the north for 5.0 months, from September 26 to February 26, with a peak percentage of 39% on January 1.
Chatom 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 3.8 months, from June 11 to October 5, with an average temperature above 80°F. The day of the year with the warmest water is August 18, with an average temperature of 84°F.
The time of year with cooler water lasts for 3.9 months, from December 11 to April 6, with an average temperature below 66°F. The day of the year with the coolest water is February 9, with an average temperature of 62°F.
Average Water Temperature
Best Time of Year to Visit
To characterize how pleasant the weather is in Chatom 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 Chatom for general outdoor tourist activities are from mid April to late May and from mid September to late October, with a peak score in the first week of October.
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 Chatom for hot-weather activities is from mid May to late 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 in Chatom typically lasts for 8.1 months (247 days), from around March 13 to around November 15, rarely starting before February 14 or after April 4, and rarely ending before October 26 or after December 5.
Time Spent in Various Temperature Bands and the Growing Season
Based on growing degree days alone, the first spring blooms in Chatom should appear around January 23, only rarely appearing before January 13 or after February 8.
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 4.0 months, from April 4 to August 5, 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 6.6 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 3.6 kWh. The darkest day of the year is December 23, with an average of 2.8 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Chatom are 31.465 deg latitude, -88.254 deg longitude, and 161 ft elevation.
The topography within 2 miles of Chatom contains only modest variations in elevation, with a maximum elevation change of 184 feet and an average elevation above sea level of 159 feet. Within 10 miles also contains only modest variations in elevation (338 feet). Within 50 miles contains only modest variations in elevation (568 feet).
The area within 2 miles of Chatom is covered by trees (89%), within 10 miles by trees (95%), and within 50 miles by trees (71%) and herbaceous vegetation (18%).
This report illustrates the typical weather in Chatom, 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 Chatom.
For each station, the records are corrected for the elevation difference between that station and Chatom 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 Chatom is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Chatom and a given station.
The stations contributing to this reconstruction are: Mobile Regional Airport (26%, 87 kilometers, south); Hattiesburg Municipal Airport (22%, 97 kilometers, west); Key Field (19%, 107 kilometers, northwest); Demopolis Municipal Airport (17%, 115 kilometers, north); and Middleton Field (17%, 115 kilometers, east).
Time zones for aiports and weather stations are provided by AskGeo.com .