The best times to visit Harvey for ideal weather are
February 19th to May 20th
or
September 24th to December 16th
based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.
Harvey Travel Guide
Other Harvey Travel Info
Weather in Harvey
Temperature
Average temperatures in Harvey vary greatly. Considering humidity, temperatures feel nice most of the year, excluding some hot weeks in the summer, with a low chance of precipitation most of the year. The area is somewhat temperate — in the 46th 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 Harvey, the hottest months are August, July, and then June. See average monthly temperatures below. The warmest time of year is generally early to mid August where highs are regularly around 92.5°F (33.6°C) with temperatures rarely dropping below 75.9°F (24.4°C) at night.
Harvey Temperatures (Fahrenheit)
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Harvey Temperatures (Celsius)
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“Feels-Like” Temperatures
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.
Harvey Perceived Temperature (F)
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Harvey Perceived Temperature (C)
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Average Harvey 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.
Show Fahrenheit
| Month | Avg. High (°F) | Avg. Mean (°F) | Avg. Low (°F) |
|---|---|---|---|
| Jan | 63.3 | 52.4 | 42.9 |
| Feb | 66.3 | 55.8 | 46.6 |
| Mar | 72.7 | 62.9 | 53.1 |
| Apr | 79 | 69.4 | 60 |
| May | 84.6 | 75.7 | 66.6 |
| Jun | 90.2 | 81.1 | 72.6 |
| Jul | 90.5 | 81.5 | 73.9 |
| Aug | 91.2 | 82 | 74.6 |
| Sep | 88.1 | 78.8 | 71 |
| Oct | 81.1 | 70 | 60.2 |
| Nov | 72.4 | 60.6 | 50.1 |
| Dec | 67.9 | 56.8 | 47.4 |
Show Celsius
| Month | Avg. High (°C) | Avg. Mean (°C) | Avg. Low (°C) |
|---|---|---|---|
| Jan | 17.4 | 11.3 | 6.1 |
| Feb | 19.1 | 13.2 | 8.1 |
| Mar | 22.6 | 17.2 | 11.7 |
| Apr | 26.1 | 20.8 | 15.6 |
| May | 29.2 | 24.3 | 19.2 |
| Jun | 32.3 | 27.3 | 22.6 |
| Jul | 32.5 | 27.5 | 23.3 |
| Aug | 32.9 | 27.8 | 23.7 |
| Sep | 31.2 | 26 | 21.7 |
| Oct | 27.3 | 21.1 | 15.7 |
| Nov | 22.4 | 15.9 | 10.1 |
| Dec | 19.9 | 13.8 | 8.6 |
Precipitation (Rain or Snow)
If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Harvey are November, October, and then March. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around early to mid May. For example, on the week of May 7th there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in mid July with an average of 2 days of significant precipitation the week of July 16th.
When can you find snow in Harvey? 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 Harvey.
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Snow on the Ground
The graph below shows the average snow on the ground in Harvey (in).
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Average Rain and Snow by Month
Show Inches
| Month | Daily Chance of Rain | Average Snow Depth (in) | Total Precipitation (in) |
|---|---|---|---|
| Jan | 15% | 0 | 2.3 |
| Feb | 14% | 0 | 2.2 |
| Mar | 9% | 0 | 2 |
| Apr | 11% | 0 | 2.1 |
| May | 11% | 0 | 3.5 |
| Jun | 19% | 0 | 3.1 |
| Jul | 26% | 0 | 4.2 |
| Aug | 24% | 0 | 4.9 |
| Sep | 12% | 0 | 2.1 |
| Oct | 7% | 0 | 1.9 |
| Nov | 6% | 0 | 0.9 |
| Dec | 15% | 0 | 4.1 |
Show Centimeters
| Month | Daily Chance of Rain | Average Snow Depth (cm) | Total Precipitation (cm) |
|---|---|---|---|
| Jan | 15 | 0 | 5.8 |
| Feb | 14 | 0 | 5.6 |
| Mar | 9 | 0 | 5.1 |
| Apr | 11 | 0 | 5.3 |
| May | 11 | 0 | 8.9 |
| Jun | 19 | 0 | 7.9 |
| Jul | 26 | 0 | 10.7 |
| Aug | 24 | 0 | 12.4 |
| Sep | 12 | 0 | 5.3 |
| Oct | 7 | 0 | 4.8 |
| Nov | 6 | 0 | 2.3 |
| Dec | 15 | 0 | 10.4 |
Humidity and Wind
Harvey has some very humid months, and above average humidity throughout the year. The least humid month is February (60.5% relative humidity), and the most humid month is August (70%).
Wind in Harvey is usually calm. The windiest month is April, followed by February and March. April’s average wind speed of around 6.5 knots (7.5 MPH or 12 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 late February and early March where average top sustained speeds reach 14.2 knots, which is considered a moderate breeze.
Relative Humidity (%)
The graph below shows the average % humidity by month in Harvey.
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Wind
The graph below shows wind speed (max and average) in knots.
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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 | 6.1 | Light breeze | 12.1 | Significant breeze |
| Feb | 6.3 | Light breeze | 12.5 | Significant breeze |
| Mar | 6.1 | Light breeze | 12.6 | Significant breeze |
| Apr | 6.5 | Light breeze | 13 | Significant breeze |
| May | 5.9 | Light breeze | 12.4 | Significant breeze |
| Jun | 4.4 | Light breeze | 11.7 | Significant breeze |
| Jul | 3.7 | Barely noticeable | 10.9 | Significant breeze |
| Aug | 3.7 | Barely noticeable | 10.9 | Gentle breeze |
| Sep | 4.6 | Light breeze | 11.3 | Significant breeze |
| Oct | 4.9 | Light breeze | 11 | Significant breeze |
| Nov | 5.3 | Light breeze | 11.3 | Significant breeze |
| Dec | 5.8 | Light breeze | 11.7 | Significant breeze |
Show Relative Humidity by Month
| Month | Avg. Relative Humidity |
|---|---|
| Jan | 60.7% |
| Feb | 60.5% |
| Mar | 61.6% |
| Apr | 63.6% |
| May | 63.9% |
| Jun | 67% |
| Jul | 69.8% |
| Aug | 70% |
| Sep | 69.5% |
| Oct | 63.4% |
| Nov | 63.7% |
| Dec | 67.6% |
Is it Safe to Travel to Harvey?
Our best data indicates this area is generally safe. As of Dec 04, 2023 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 Dec 04, 2023.
The Busiest and Least Crowded Months
The busiest month for tourism in Harvey, 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 Harvey 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
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Overall Harvey Travel Experience by Season
Spring (March through May)
Humidity and temperatures combine to make this season feel warm. Highs range from 87.2°F (30.7°C) and 68.2°F (20.1°C) with warmer temperatures in the later months. Rain is rare with roughly 3 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 6 to 8 days of precipitation per month. June – August is fairly slow season for tourism in Harvey, so lodging and other accommodations may cost slightly less.
Fall (September through November)
Fall daily highs range from 89.1°F (31.7°C) and 69.1°F (20.6°C), which will feel very nice given the humidity and wind. It rains or snows a normal amount: 2 to 4 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 too cold this time of year in Harvey to be enjoyable for warm weather travelers. The average high during this season is between 69.3°F (20.7°C) and 61.7°F (16.5°C). On average, it rains or snows a fair amount: 4 to 5 times per month. These times of year are the busiest with tourists.
Best Times to Travel› the United States › Harvey, LA, US