Average Weather in Jennings Louisiana, United States
In Jennings, the summers are long, hot, and oppressive; the winters are short, cold, 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 31°F or above 94°F.
Based on the tourism score, the best times of year to visit Jennings for warm-weather activities are from early April to late May and from late September to late October.
The hot season lasts for 4.2 months, from May 20 to September 26, with an average daily high temperature above 84°F. The hottest day of the year is August 11, with an average high of 90°F and low of 74°F.
The cool season lasts for 2.8 months, from December 2 to February 23, with an average daily high temperature below 67°F. The coldest day of the year is January 16, with an average low of 44°F and high of 61°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
El Hamma, Tunisia (5,725 miles away); Longmen, China (8,123 miles); and Roxby Downs, Australia (9,519 miles) are the far-away foreign places with temperatures most similar to Jennings (view comparison).
In Jennings, 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 Jennings begins around September 15 and lasts for 2.7 months, ending around December 7. On October 26, 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 7 and lasts for 9.3 months, ending around September 15. On July 12, 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.
Cloud Cover Categories
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Jennings varies throughout the year.
The wetter season lasts 3.3 months, from May 31 to September 10, with a greater than 38% chance of a given day being a wet day. The chance of a wet day peaks at 52% on June 30.
The drier season lasts 8.7 months, from September 10 to May 31. The smallest chance of a wet day is 25% on April 5.
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 52% on June 30.
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. Jennings experiences some seasonal variation in monthly rainfall.
Rain falls throughout the year in Jennings. The most rain falls during the 31 days centered around June 26, with an average total accumulation of 5.5 inches.
The least rain falls around March 24, with an average total accumulation of 3.9 inches.
Average Monthly Rainfall
The length of the day in Jennings varies significantly over the course of the year. In 2018, the shortest day is December 21, with 10 hours, 12 minutes of daylight; the longest day is June 21, with 14 hours, 6 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 6:08 AM on June 11, and the latest sunrise is 1 hour, 18 minutes later at 7:26 AM on November 3. The earliest sunset is at 5:09 PM on December 2, and the latest sunset is 3 hours, 7 minutes later at 8:16 PM on June 30.
Daylight saving time (DST) is observed in Jennings 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
Jennings experiences extreme seasonal variation in the perceived humidity.
The muggier period of the year lasts for 6.6 months, from April 8 to October 28, 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 21, with muggy conditions 99% of the time.
The least muggy day of the year is January 29, with muggy conditions 6% of the time.
Humidity Comfort Levels
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The average hourly wind speed in Jennings experiences significant seasonal variation over the course of the year.
The windier part of the year lasts for 7.6 months, from October 7 to May 26, with average wind speeds of more than 7.8 miles per hour. The windiest day of the year is March 7, with an average hourly wind speed of 9.7 miles per hour.
The calmer time of year lasts for 4.4 months, from May 26 to October 7. The calmest day of the year is August 13, with an average hourly wind speed of 5.9 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Jennings varies throughout the year.
The wind is most often from the south for 6.5 months, from February 18 to September 4 and for 1.0 weeks, from November 22 to November 29, with a peak percentage of 62% on June 8. The wind is most often from the east for 2.0 months, from September 4 to November 4, with a peak percentage of 36% on September 20. The wind is most often from the north for 3.0 days, from November 4 to November 7; for 2.1 weeks, from November 7 to November 22; and for 2.6 months, from November 29 to February 18, with a peak percentage of 32% on November 21.
Jennings 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 4.0 months, from May 31 to September 29, with an average temperature above 81°F. The day of the year with the warmest water is August 7, with an average temperature of 86°F.
The time of year with cooler water lasts for 3.3 months, from December 10 to March 19, with an average temperature below 65°F. The day of the year with the coolest water is January 29, with an average temperature of 60°F.
Average Water Temperature
Best Time of Year to Visit
To characterize how pleasant the weather is in Jennings 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 Jennings for general outdoor tourist activities are from early April to late May and from late September to late October, with a peak score in the last week of April.
The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best times of year to visit Jennings for hot-weather activities are from early May to late June and from late August to late September, with a peak score in the first week of June.
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 Jennings typically lasts for 10 months (303 days), from around February 12 to around December 12, rarely starting before January 11 or after March 16, and rarely ending before November 16 or after January 3.
Time Spent in Various Temperature Bands and the Growing Season
Based on growing degree days alone, the first spring blooms in Jennings should appear around January 18, only rarely appearing before January 11 or after January 31.
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 3.0 months, from April 1 to June 30, 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 17 to February 1, with an average daily incident shortwave energy per square meter below 3.7 kWh. The darkest day of the year is December 24, with an average of 2.9 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Jennings are 30.222 deg latitude, -92.657 deg longitude, and 13 ft elevation.
The topography within 2 miles of Jennings is essentially flat, with a maximum elevation change of 30 feet and an average elevation above sea level of 16 feet. Within 10 miles is also essentially flat (52 feet). Within 50 miles is essentially flat (197 feet).
The area within 2 miles of Jennings is covered by cropland (60%), artificial surfaces (30%), and herbaceous vegetation (10%), within 10 miles by cropland (72%) and herbaceous vegetation (24%), and within 50 miles by cropland (42%) and herbaceous vegetation (34%).
This report illustrates the typical weather in Jennings, 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 Jennings.
For each station, the records are corrected for the elevation difference between that station and Jennings 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 Jennings is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Jennings and a given station.
The stations contributing to this reconstruction are: Chennault International Airport (28%, 47 kilometers, west); Allen Parish Airport (20%, 59 kilometers, north); Abbeville Chris Crusta Memorial Airport (18%, 62 kilometers, southeast); Lafayette Regional Airport (17%, 64 kilometers, east); and St. Landry Parish Airport (17%, 65 kilometers, northeast).
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.
Time zones for aiports and weather stations are provided by AskGeo.com .