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Monthly climate in Rio Grande City, Texas, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Rio Grande City features a hot semi-arid climate (BSh).Temperatures typically range between 16 °C (61 °F) and 31 °C (89 °F) through the year, but rarely can drop to -6 °C (22 °F) or can rise to as high as 43 °C (110 °F).The average annual precipitation amounts to about 536 mm (21.1 inches) and receives 66 rainy days on the 1 mm (0.04 inches) threshold annually.Rio Grande City enjoys an average of 3307 hours of sunshine throughout the year, and daylight varies from 10 hours 30 minutes to 13 hours 45 minutes per day.

Monthly average temperatures in Rio Grande City, Texas, United States §

The warmest months in Rio Grande City are June, July and August, with daily mean temperatures ranging from 30 to 31 °C (86 - 89 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 16 to 18 °C (61 - 65 °F) throughout the day. On average each year, Rio Grande City experiences 264 days above 25 °C (77.0 °F) and 1 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Rio Grande City, Texas, United States.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 35°C
(96°F)		 38°C
(100°F)		 38°C
(101°F)		 41°C
(107°F)		 41°C
(106°F)		 43°C
(110°F)		 42°C
(108°F)		 42°C
(108°F)		 41°C
(106°F)		 38°C
(101°F)		 35°C
(96°F)		 34°C
(93°F)
Mean maximum 32°C
(90°F)		 35°C
(95°F)		 36°C
(98°F)		 40°C
(104°F)		 40°C
(104°F)		 40°C
(104°F)		 41°C
(105°F)		 41°C
(105°F)		 40°C
(104°F)		 37°C
(99°F)		 34°C
(93°F)		 32°C
(89°F)
Average high 22°C
(73°F)		 25°C
(77°F)		 29°C
(84°F)		 32°C
(90°F)		 35°C
(94°F)		 36°C
(96°F)		 37°C
(99°F)		 38°C
(101°F)		 35°C
(94°F)		 31°C
(88°F)		 26°C
(80°F)		 24°C
(75°F)
Daily mean 16°C
(61°F)		 18°C
(65°F)		 22°C
(72°F)		 25°C
(78°F)		 28°C
(83°F)		 30°C
(86°F)		 30°C
(87°F)		 31°C
(89°F)		 29°C
(84°F)		 25°C
(77°F)		 20°C
(69°F)		 17°C
(64°F)
Average low 11°C
(52°F)		 13°C
(55°F)		 17°C
(63°F)		 20°C
(68°F)		 23°C
(74°F)		 25°C
(77°F)		 25°C
(78°F)		 26°C
(79°F)		 24°C
(76°F)		 20°C
(68°F)		 15°C
(60°F)		 12°C
(54°F)
Mean minimum 2°C
(37°F)		 3°C
(38°F)		 8°C
(47°F)		 12°C
(53°F)		 18°C
(64°F)		 22°C
(72°F)		 23°C
(74°F)		 24°C
(76°F)		 20°C
(69°F)		 9°C
(48°F)		 6°C
(43°F)		 4°C
(39°F)
Minimum -1°C
(30°F)		 -6°C
(22°F)		 4°C
(39°F)		 8°C
(47°F)		 16°C
(60°F)		 19°C
(66°F)		 22°C
(72°F)		 23°C
(74°F)		 18°C
(65°F)		 6°C
(43°F)		 1°C
(33°F)		 1°C
(34°F)

Compare climate in Rio Grande City with other places

Compare temperature, precipitation, sunshine, UV index in Rio Grande City, Texas, United States with other places around the world.

Monthly average precipitation in Rio Grande City, Texas, United States §

Rio Grande City usually has the most precipitation in May, June and September, with an average of 8 rainy days and 85 mm (3.3 inches) of precipitation per month.The driest months in Rio Grande City are January, February and August. On average, 17 mm (0.7 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Rio Grande City, Texas, United States.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 18 (0.7) 18 (0.7) 29 (1.1) 32 (1.3) 77 (3.0) 79 (3.1) 73 (2.9) 16 (0.6) 97 (3.8) 37 (1.5) 37 (1.5) 20 (0.8)
Average precipitation days (≥ 1 mm) 4 4 5 5 7 8 6 4 9 7 4 3

Monthly sunshine hours in Rio Grande City, Texas, United States §

The sunniest months in Rio Grande City are June, July and August, when the sun shines an average of 11 hours 1 minutes a day.Least sunny months in Rio Grande City: January, February and November receive an average of 7 hours 1 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Rio Grande City, Texas, United States.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 179 209 261 274 311 333 338 341 287 279 243 246
Mean daily daylight hours 10h 41m 11h 15m 12h 1m 12h 47m 13h 26m 13h 45m 13h 34m 13h 0m 12h 16m 11h 29m 10h 49m 10h 30m

Solar UV radiation in Rio Grande City, Texas, United States §

Rio Grande City experiences the highest level of ultraviolet (UV) radiation in May, July and August, when the maximum UV index can reach values of 12 - 12, which corresponds to the Extreme category of sun exposure.January, November and December are in the High exposure category. In these months, the maximum values of the UV index do not exceed 7. For more detailed information, check out our hourly Rio Grande City UV Index data.

Average daily maximum UV levels by month for Rio Grande City, Texas, United States.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 6 9 10 11 12 12 12 12 11 9 7 6