The best times to visit Gretna for ideal weather are
January 29th to May 13th
October 15th to December 23rd
based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.
Gretna Travel Guide
Other Gretna Travel Info
Weather in Gretna
Average temperatures in Gretna vary greatly. Considering humidity, temperatures feel nice most of the year, excluding some hot weeks in the summer, with a fair chance of precipitation about half of the year. The area is somewhat temperate — in the 43rd percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit Gretna, the hottest months are June, August, and then July. See average monthly temperatures below. The warmest time of year is generally early August where highs are regularly around 93.7°F (34.3°C) with temperatures rarely dropping below 80.3°F (26.8°C) at night.
Gretna Temperatures (Fahrenheit)
Gretna Temperatures (Celsius)
The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.
Gretna Perceived Temperature (F)
Gretna Perceived Temperature (C)
Average Gretna Temperatures by Month
Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.
|Month||Avg. High (°F)||Avg. Mean (°F)||Avg. Low (°F)|
|Month||Avg. High (°C)||Avg. Mean (°C)||Avg. Low (°C)|
Precipitation (Rain or Snow)
If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Gretna are October, March, and then January. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around late January and early February. For example, on the week of January 29th there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in late May to early June with an average of 5 days of significant precipitation the week of May 28th.
When can you find snow in Gretna? Weather stations report no annual snow. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.
Chance of Precipitation
The graph below shows the % chance of rainy and snowy days in Gretna.
Snow on the Ground
The graph below shows the average snow on the ground in Gretna (in).
Average Rain and Snow by Month
|Month||Daily Chance of Rain||Average Snow Depth (in)||Total Precipitation (in)|
|Month||Daily Chance of Rain||Average Snow Depth (cm)||Total Precipitation (cm)|
Humidity and Wind
Gretna has some slightly muggy months, with moderately humid months on the other side of the year. The least humid month is November (50% relative humidity), and the most humid month is August (60.1%).
Wind in Gretna is usually calm. The windiest month is April, followed by March and May. April’s average wind speed of around 6.3 knots (7.2 MPH or 11.6 KPH) is considered “a light breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in early to mid April where average top sustained speeds reach 14.6 knots, which is considered a moderate breeze.
Relative Humidity (%)
The graph below shows the average % humidity by month in Gretna.
The graph below shows wind speed (max and average) in knots.
Average Wind Speeds
Show Wind Speeds
All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.
|Month||Avg. Wind||Avg. Wind Feel||Sustained High Wind||High Wind Feel|
|Jan||5.4||Light breeze||10.7||Gentle breeze|
|Feb||5||Light breeze||11.1||Significant breeze|
|Mar||5.5||Light breeze||11.3||Gentle breeze|
|Apr||6.3||Light breeze||12.6||Significant breeze|
|May||5.4||Light breeze||11.2||Gentle breeze|
|Jun||4.3||Light breeze||9.9||Gentle breeze|
|Jul||3.8||Barely noticeable||9.1||Gentle breeze|
|Aug||4||Light breeze||9.9||Gentle breeze|
|Sep||3.6||Barely noticeable||9.2||Gentle breeze|
|Oct||4.3||Light breeze||9.4||Gentle breeze|
|Nov||5.2||Light breeze||10.1||Gentle breeze|
|Dec||5.2||Light breeze||10.2||Gentle breeze|
Show Relative Humidity by Month
|Month||Avg. Relative Humidity|
Is it Safe to Travel to Gretna?
Our best data indicates this area is generally safe. As of Oct 07, 2019 there are no travel advisories or warnings for the United States; exercise normal security precautions. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Sep 23, 2019.
The Busiest and Least Crowded Months
The busiest month for tourism in Gretna, LA, US is February, followed by January and March. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit Gretna in November. Those willing to visit at these times will likely find it the least expensive month.
Estimated Tourism by Month
Most Popular Months to Visit
Overall Gretna Travel Experience by Season
Spring (March through May)
Humidity and temperatures combine to make this season feel warm. Highs range from 88.8°F (31.6°C) and 65.4°F (18.6°C) with warmer temperatures in the later months. Rain is somewhat common with 3 to 5 days of significant precipitation per month. Spring is the second busiest for tourism, which makes it a good time for those looking for things to do.
Summer (June through August)
The middle-year months have very comfortable weather with high temperatures that are quite warm. These months see the most precipitation with 8 to 10 days of precipitation per month. June – August is fairly slow season for tourism in Gretna, so lodging and other accommodations may cost slightly less.
Fall (September through November)
Fall daily highs range from 92.3°F (33.5°C) and 66.5°F (19.2°C), which will feel very nice given the humidity and wind. It rains or snows a significant amount: 3 to 10 days per month. Tourism is the slowest during these months due to the weather, so hotels may be affordably priced.
Winter (December through February)
Weather is somewhat cool this time of year in Gretna to be enjoyable for warm weather travelers. The average high during this season is between 73.1°F (22.8°C) and 59.4°F (15.2°C). On average, it rains or snows a fair amount: 4 to 8 times per month. These times of year are the busiest with tourists.
Best Times to Travel› the United States › Gretna, LA, US