The best times to visit Rio Grande City for ideal weather are

October 29th to March 25th

based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.



Other Rio Grande City Travel Info

Weather in Rio Grande City


Average temperatures in Rio Grande City vary greatly. Considering humidity, temperatures feel hot for about half of the year and otherwise nice with a very low chance of rain throughout the year. The area is somewhat temperate — in the 54th 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 Rio Grande City, 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 100.8°F (38.2°C) with temperatures rarely dropping below 78.7°F (25.9°C) at night.

Rio Grande City Temperatures (Fahrenheit)


Rio Grande City Temperatures (Celsius)


“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.

Rio Grande City Perceived Temperature (F)


Rio Grande City Perceived Temperature (C)



Average Rio Grande City 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 72.4 59.9 50.5
Feb 77.3 64.2 55
Mar 83.1 70 60.5
Apr 88.8 76.6 67.8
May 92.4 81.1 72.6
Jun 97.3 85.3 76.5
Jul 97.4 85.7 77.5
Aug 99.5 86.9 78
Sep 93.9 82.5 74.5
Oct 90.2 77.6 67.4
Nov 81.1 68.8 58.9
Dec 75.5 63.1 54.2

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 22.4 15.5 10.3
Feb 25.2 17.9 12.8
Mar 28.4 21.1 15.8
Apr 31.6 24.8 19.9
May 33.6 27.3 22.6
Jun 36.3 29.6 24.7
Jul 36.3 29.8 25.3
Aug 37.5 30.5 25.6
Sep 34.4 28.1 23.6
Oct 32.3 25.3 19.7
Nov 27.3 20.4 14.9
Dec 24.2 17.3 12.3



Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Rio Grande City are October, December, 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 August. For example, on the week of July 30th there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in early to mid September with an average of 2 days of significant precipitation the week of September 10th.

When can you find snow in Rio Grande City? 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 Rio Grande City.

Days with precipitation

Snow on the Ground

The graph below shows the average snow on the ground in Rio Grande City (in).

Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 8% 0 1
Feb 7% 0 0.8
Mar 6% 0 1
Apr 8% 0 1.8
May 10% 0 2
Jun 10% 0 2.1
Jul 13% 0 3.3
Aug 8% 0 2
Sep 20% 0 4.3
Oct 5% 0 1.2
Nov 7% 0 0.9
Dec 6% 0 1.4

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 8 0 2.5
Feb 7 0 2
Mar 6 0 2.5
Apr 8 0 4.6
May 10 0 5.1
Jun 10 0 5.3
Jul 13 0 8.4
Aug 8 0 5.1
Sep 20 0 10.9
Oct 5 0 3
Nov 7 0 2.3
Dec 6 0 3.6


Humidity and Wind

Rio Grande City has some high humidity months, with other comfortably humid months. The least humid month is August (55.5% relative humidity), and the most humid month is September (63.2%).

Wind in Rio Grande City is usually moderate. The windiest month is May, followed by April and June. May’s average wind speed of around 10.8 knots (12.5 MPH or 20.1 KPH) is considered “a gentle breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in late April where average top sustained speeds reach 19.4 knots, which is considered a fresh breeze.

Relative Humidity (%)

The graph below shows the average % humidity by month in Rio Grande City.

Avg. Relative Humidity


The graph below shows wind speed (max and average) in knots.

Max Sustained Wind
Average Daily Wind

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 7.9 Gentle breeze 14.9 Significant breeze
Feb 9.1 Gentle breeze 16.3 Significant breeze
Mar 10.2 Gentle breeze 17.9 Significant breeze
Apr 10.6 Gentle breeze 18 Strong breeze
May 10.8 Gentle breeze 17.9 Significant breeze
Jun 10.3 Gentle breeze 18 Strong breeze
Jul 10.2 Gentle breeze 18 Significant breeze
Aug 8.7 Gentle breeze 16.8 Significant breeze
Sep 6.5 Light breeze 14.3 Significant breeze
Oct 7.5 Gentle breeze 14.5 Significant breeze
Nov 7.8 Gentle breeze 14.9 Significant breeze
Dec 7.9 Gentle breeze 14.7 Significant breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 59.2%
Feb 59.8%
Mar 56.2%
Apr 57.3%
May 59.9%
Jun 58.3%
Jul 59.3%
Aug 55.5%
Sep 63.2%
Oct 56.3%
Nov 57.3%
Dec 59.8%


Is it Safe to Travel to Rio Grande City?

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 Rio Grande City, TX, US is July, followed by June and December. 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 Rio Grande City in October. Those willing to visit at these times will likely find it the least expensive month.

Estimated Tourism by Month


Most Popular Months to Visit

Tourists Seeking Accommodations

Tourism graph is based on Google searches for services used by tourists relative to the rest of the year. Tourism data for this area is extrapolated based on nearby areas. Displayed data is calculated relative to the peak, so a score of 53.6 in October means 53.6% of the tourists vs. July.



Overall Rio Grande City Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel warm. Highs range from 95.4°F (35.2°C) and 79.4°F (26.3°C) with warmer temperatures in the later months. Rain is rare with 2 to 3 days of significant precipitation per month. Spring is fairly slow for tourism, which makes it a good time for those looking for deals.

Summer (June through August)

The middle-year months have hot weather with high temperatures that are quite warm. These months see moderate precipitation with 3 to 4 days of precipitation per month. June – August is the busiest season for tourism in Rio Grande City, so lodging and other accommodations may cost more than usual.

Fall (September through November)

Fall daily highs range from 95.8°F (35.4°C) and 77.5°F (25.3°C), which will feel very nice given the humidity and wind. It rains or snows a normal amount: 2 to 6 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 Rio Grande City to be enjoyable for warm weather travelers. The average high during this season is between 81.3°F (27.4°C) and 70.3°F (21.3°C). On average, it rains or snows a smalll amount: consistently 2 times per month. These times of year are the second busiest with tourists.


Best Times to Travelthe United States › Rio Grande City, TX, US