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Average Weather in Hattiesburg Mississippi, United States

In Hattiesburg, 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 40°F to 92°F and is rarely below 26°F or above 97°F.

Temperature

The hot season lasts for 4.1 months, from May 21 to September 24, with an average daily high temperature above 85°F. The hottest day of the year is August 11, with an average high of 92°F and low of 73°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 40°F and high of 60°F.

Average High and Low Temperature

The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.

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

Average Hourly Temperature in HattiesburgJanFebMarAprMayJunJulAugSepOctNovDec12 AM4 AM8 AM12 PM4 PM8 PM12 AMhotcoldcoolwarmcomfortablevery cold
The average hourly temperature, color coded into bands: frigid < 15°F < freezing < 32°F < very cold < 45°F < cold < 55°F < cool < 65°F < comfortable < 75°F < warm < 85°F < hot < 95°F < sweltering. The shaded overlays indicate night and civil twilight.

Clouds

In Hattiesburg, 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 Hattiesburg begins around August 29 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 29. 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

Cloud Cover Categories in HattiesburgclearercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Oct 1268%Oct 1268%Jul 1247%Jul 1247%Aug 2957%Aug 2957%Dec 558%Dec 558%clearmostly cloudyovercastmostly clearpartly cloudy
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds: clear < 20% < mostly clear < 40% < partly cloudy < 60% < mostly cloudy < 80% < overcast.

Precipitation

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Hattiesburg varies significantly throughout the year.

The wetter season lasts 2.9 months, from May 31 to August 28, with a greater than 37% chance of a given day being a wet day. The chance of a wet day peaks at 55% on July 26.

The drier season lasts 9.1 months, from August 28 to May 31. 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 55% on July 26.

Daily Chance of Precipitation

Daily Chance of Precipitation in HattiesburgwetdrydryJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Jul 2655%Jul 2655%Oct 820%Oct 820%Jan 131%Jan 131%May 3137%May 3137%Aug 2837%Aug 2837%rain
The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).

Rainfall

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. Hattiesburg experiences significant seasonal variation in monthly rainfall.

Rain falls throughout the year in Hattiesburg. The most rain falls during the 31 days centered around February 15, with an average total accumulation of 5.5 inches.

The least rain falls around October 6, with an average total accumulation of 3.1 inches.

Average Monthly Rainfall

The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average liquid-equivalent snowfall.

Sun

The length of the day in Hattiesburg 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

Hours of Daylight and Twilight in HattiesburgJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 6 minMar 2012 hr, 6 minMar 2014 hr, 11 minJun 2014 hr, 11 minJun 2012 hr, 8 minSep 2212 hr, 8 minSep 2210 hr, 7 minDec 2110 hr, 7 minDec 21nightnightday
The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

The earliest sunrise is at 5:52 AM on June 11, and the latest sunrise is 1 hour, 23 minutes later at 7:15 AM on November 4. The earliest sunset is at 4:53 PM on December 3, and the latest sunset is 3 hours, 12 minutes later at 8:05 PM on June 30.

Daylight saving time (DST) is observed in Hattiesburg 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

Sunrise & Sunset with Twilight and Daylight Saving Time in HattiesburgJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 115:52 AMJun 115:52 AM8:05 PMJun 308:05 PMJun 30Dec 34:53 PMDec 34:53 PM7:15 AMNov 47:15 AMNov 4Mar 12DSTMar 12DSTDSTNov 5DSTNov 5daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day over the course of the year 2017. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray. The transitions to and from daylight saving time are indicated by the 'DST' labels.

Humidity

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.

Hattiesburg experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 5.6 months, from April 29 to October 17, during which time the comfort level is muggy, oppressive, or miserable at least 26% of the time. The muggiest day of the year is July 23, with muggy conditions 96% of the time.

The least muggy day of the year is January 29, with muggy conditions 2% of the time.

Humidity Comfort Levels

Humidity Comfort Levels in HattiesburgmuggyJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Jan 292%Jan 292%96%Jul 2396%Jul 23Apr 2926%Apr 2926%Oct 1726%Oct 1726%miserablemiserabledrydryoppressiveoppressivehumidhumidmuggymuggycomfortablecomfortable
The percentage of time spent at various humidity comfort levels, categorized by dew point: dry < 55°F < comfortable < 60°F < humid < 65°F < muggy < 70°F < oppressive < 75°F < miserable.

Wind

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 Hattiesburg experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 7.7 months, from September 30 to May 20, 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 4.5 miles per hour.

The calmer time of year lasts for 4.3 months, from May 20 to September 30. 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 average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The predominant average hourly wind direction in Hattiesburg varies throughout the year.

The wind is most often from the south for 6.2 months, from February 23 to August 28, with a peak percentage of 51% on May 21. The wind is most often from the east for 4.0 weeks, from August 28 to September 25, with a peak percentage of 33% on September 19. The wind is most often from the north for 4.9 months, from September 25 to February 23, with a peak percentage of 38% on January 1.

Wind Direction

Wind Direction in HattiesburgNSENJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%northeastwestsouth
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions (north, east, south, and west), excluding hours in which the mean wind speed is less than 1 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Solar Energy

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 3.8 months, from April 4 to July 29, with an average daily incident shortwave energy per square meter above 5.8 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 16 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 24, with an average of 2.8 kWh.

Average Daily Incident Shortwave Solar Energy

Average Daily Incident Shortwave Solar Energy in HattiesburgbrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh1 kWh2 kWh3 kWh4 kWh5 kWh6 kWh7 kWh8 kWh9 kWhMay 196.6 kWhMay 196.6 kWhDec 242.8 kWhDec 242.8 kWhApr 45.9 kWhApr 45.9 kWhJul 295.8 kWhJul 295.8 kWhFeb 23.6 kWhFeb 23.6 kWh
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

Topography

For the purposes of this report, the geographical coordinates of Hattiesburg are 31.327 deg latitude, -89.290 deg longitude, and 161 ft elevation.

The topography within 2 miles of Hattiesburg contains only modest variations in elevation, with a maximum elevation change of 115 feet and an average elevation above sea level of 156 feet. Within 10 miles also contains only modest variations in elevation (351 feet). Within 50 miles contains only modest variations in elevation (554 feet).

The area within 2 miles of Hattiesburg is covered by artificial surfaces (70%) and cropland (12%), within 10 miles by trees (36%) and cropland (24%), and within 50 miles by trees (57%) and herbaceous vegetation (19%).

Data Sources

This report illustrates the typical weather in Hattiesburg, 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 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Hattiesburg.

For each station, the records are corrected for the elevation difference between that station and Hattiesburg 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 Hattiesburg is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Hattiesburg and a given station.

The stations contributing to this reconstruction are: Hattiesburg Municipal Airport (81%, 6 kilometers, southeast); Hattiesburg–Laurel Regional Airport (18%, 16 kilometers, north); and Mc Comb/Pike County Airport/John E Lewis Field (1.0%, 113 kilometers, west).

Other Data

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.

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.