Average Weather in Thibodaux Louisiana, United States

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2. United States
3. Louisiana
4. Lafourche Parish
5. Thibodaux

In Thibodaux, the summers are long, hot, and oppressive; the winters are short, cool, and windy; and it is wet and partly cloudy year round. Over the course of the year, the temperature typically varies from 44°F to 90°F and is rarely below 30°F or above 94°F.

The hot season lasts for 4.4 months, from May 17 to September 28, with an average daily high temperature above 84°F. The hottest day of the year is August 9, with an average high of 90°F and low of 74°F.

The cool season lasts for 2.8 months, from December 3 to February 25, with an average daily high temperature below 68°F. The coldest day of the year is January 17, with an average low of 44°F and high of 63°F.

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.

In Thibodaux, 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 Thibodaux begins around September 13 and lasts for 9.2 months, ending around June 18. On October 26, 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 June 18 and lasts for 2.8 months, ending around September 13. On July 30, the cloudiest day of the year, the sky is overcast or mostly cloudy 59% of the time, and clear, mostly clear, or partly cloudy 41% 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 Thibodaux varies significantly throughout the year.

The wetter season lasts 3.4 months, from June 2 to September 13, with a greater than 41% chance of a given day being a wet day. The chance of a wet day peaks at 61% on July 29.

The drier season lasts 8.6 months, from September 13 to June 2. The smallest chance of a wet day is 22% on October 30.

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 61% on July 29.

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. Thibodaux experiences significant seasonal variation in monthly rainfall.

Rain falls throughout the year in Thibodaux. The most rain falls during the 31 days centered around June 28, with an average total accumulation of 5.7 inches.

The least rain falls around October 15, with an average total accumulation of 3.4 inches.

The length of the day in Thibodaux varies significantly over the course of the year. In 2017, the shortest day is December 21, with 10 hours, 14 minutes of daylight; the longest day is June 21, with 14 hours, 4 minutes of daylight.

The earliest sunrise is at 6:02 AM on June 10, and the latest sunrise is 1 hour, 17 minutes later at 7:19 AM on November 4. The earliest sunset is at 5:03 PM on December 1, and the latest sunset is 3 hours, 5 minutes later at 8:07 PM on June 30.

Daylight saving time (DST) is observed in Thibodaux during 2017, starting in the spring on March 12, lasting 7.8 months, and ending in the fall on November 5.

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.

Thibodaux experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 6.5 months, from April 10 to October 27, during which time the comfort level is muggy, oppressive, or miserable at least 30% of the time. The muggiest day of the year is July 23, with muggy conditions 99% of the time.

The least muggy day of the year is January 29, with muggy conditions 7% of the time.

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

The windier part of the year lasts for 7.9 months, from September 25 to May 21, with average wind speeds of more than 4.5 miles per hour. The windiest day of the year is February 19, with an average hourly wind speed of 5.7 miles per hour.

The calmer time of year lasts for 4.1 months, from May 21 to September 25. The calmest day of the year is August 8, with an average hourly wind speed of 3.3 miles per hour.

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

The wind is most often from the south for 4.8 months, from February 22 to July 17 and for 6.0 days, from August 15 to August 21, with a peak percentage of 52% on June 4. The wind is most often from the east for 3.1 months, from August 21 to November 24, with a peak percentage of 46% on September 20. The wind is most often from the north for 2.9 months, from November 24 to February 22, with a peak percentage of 37% on January 1.

Thibodaux 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 May 29 to September 27, with an average temperature above 80°F. The day of the year with the warmest water is August 10, with an average temperature of 86°F.

The time of year with cooler water lasts for 3.5 months, from December 7 to March 21, with an average temperature below 66°F. The day of the year with the coolest water is January 30, with an average temperature of 61°F.

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 2.7 months, from March 31 to June 21, 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 3.8 kWh. The darkest day of the year is December 24, with an average of 3.0 kWh.

For the purposes of this report, the geographical coordinates of Thibodaux are 29.796 deg latitude, -90.823 deg longitude, and 7 ft elevation.

The topography within 2 miles of Thibodaux is essentially flat, with a maximum elevation change of 10 feet and an average elevation above sea level of 8 feet. Within 10 miles is also essentially flat (10 feet). Within 50 miles is essentially flat (413 feet).

The area within 2 miles of Thibodaux is covered by cropland (58%) and artificial surfaces (39%), within 10 miles by herbaceous vegetation (70%) and cropland (28%), and within 50 miles by herbaceous vegetation (61%) and water (23%).

This report illustrates the typical weather in Thibodaux, 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 Thibodaux.

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

The stations contributing to this reconstruction are: Houma-Terrebonne Airport (49%, 30 kilometers, southeast); Harry P Williams Memorial Airport (23%, 50 kilometers, west); Louis Armstrong New Orleans International Airport (19%, 57 kilometers, northeast); and Baton Rouge Metropolitan Airport (10%, 88 kilometers, north).

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.