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Monthly climate in Castroville, Texas, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Castroville features a humid subtropical climate (Cfa).Temperatures typically range between 12 °C (54 °F) and 31 °C (87 °F) through the year, but rarely can drop to -11 °C (12 °F) or can rise to as high as 42 °C (108 °F).The average annual precipitation amounts to about 712 mm (28.0 inches) and receives 90 rainy days on the 1 mm (0.04 inches) threshold annually.Castroville enjoys an average of 3181 hours of sunshine throughout the year, and daylight varies from 10 hours 18 minutes to 13 hours 57 minutes per day.

Monthly average temperatures in Castroville, Texas, United States §

The warmest months in Castroville are June, July and August, with daily mean temperatures ranging from 29 to 31 °C (84 - 87 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 12 to 14 °C (54 - 57 °F) throughout the day. On average each year, Castroville experiences 217 days above 25 °C (77.0 °F) and 7 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Castroville, 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 28°C
(83°F)		 32°C
(91°F)		 34°C
(93°F)		 38°C
(100°F)		 40°C
(104°F)		 41°C
(106°F)		 42°C
(108°F)		 40°C
(105°F)		 39°C
(103°F)		 38°C
(100°F)		 33°C
(91°F)		 30°C
(86°F)
Mean maximum 26°C
(79°F)		 30°C
(86°F)		 32°C
(90°F)		 36°C
(97°F)		 37°C
(99°F)		 39°C
(102°F)		 40°C
(104°F)		 40°C
(103°F)		 39°C
(102°F)		 35°C
(95°F)		 30°C
(86°F)		 28°C
(82°F)
Average high 18°C
(65°F)		 20°C
(68°F)		 25°C
(78°F)		 28°C
(83°F)		 32°C
(90°F)		 35°C
(95°F)		 36°C
(97°F)		 37°C
(99°F)		 33°C
(92°F)		 29°C
(84°F)		 23°C
(74°F)		 20°C
(68°F)
Daily mean 12°C
(54°F)		 13°C
(57°F)		 19°C
(66°F)		 22°C
(72°F)		 26°C
(79°F)		 29°C
(84°F)		 30°C
(86°F)		 31°C
(87°F)		 28°C
(82°F)		 23°C
(73°F)		 17°C
(62°F)		 14°C
(57°F)
Average low 6°C
(44°F)		 8°C
(47°F)		 13°C
(56°F)		 16°C
(61°F)		 20°C
(69°F)		 24°C
(75°F)		 24°C
(76°F)		 25°C
(77°F)		 22°C
(73°F)		 17°C
(63°F)		 11°C
(52°F)		 8°C
(46°F)
Mean minimum -3°C
(27°F)		 -3°C
(28°F)		 4°C
(39°F)		 7°C
(45°F)		 14°C
(57°F)		 21°C
(70°F)		 22°C
(71°F)		 22°C
(72°F)		 17°C
(62°F)		 6°C
(43°F)		 2°C
(35°F)		 -0°C
(32°F)
Minimum -7°C
(21°F)		 -11°C
(12°F)		 -2°C
(29°F)		 4°C
(39°F)		 10°C
(51°F)		 18°C
(65°F)		 18°C
(65°F)		 20°C
(68°F)		 12°C
(54°F)		 3°C
(38°F)		 -4°C
(25°F)		 -3°C
(27°F)

Compare climate in Castroville with other places

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

Monthly average precipitation in Castroville, Texas, United States §

Castroville usually has the most precipitation in May, September and October, with an average of 10 rainy days and 95 mm (3.7 inches) of precipitation per month.The driest months in Castroville are January, August and November. On average, 38 mm (1.5 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Castroville, 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) 34 (1.3) 47 (1.8) 50 (2.0) 61 (2.4) 109 (4.3) 58 (2.3) 52 (2.0) 40 (1.6) 106 (4.2) 69 (2.7) 40 (1.6) 46 (1.8)
Average precipitation days (≥ 1 mm) 5 9 8 6 13 10 6 5 9 9 5 5

Monthly sunshine hours in Castroville, Texas, United States §

The sunniest months in Castroville are June, July and August, when the sun shines an average of 11 hours 8 minutes a day.Least sunny months in Castroville: January, February and December receive an average of 6 hours 24 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Castroville, 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 179 176 242 261 289 337 350 337 284 266 227 227
Mean daily daylight hours 10h 30m 11h 9m 12h 0m 12h 53m 13h 36m 13h 57m 13h 46m 13h 7m 12h 17m 11h 25m 10h 40m 10h 18m

Solar UV radiation in Castroville, Texas, United States §

Castroville experiences the highest level of ultraviolet (UV) radiation in June, 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 Moderate / 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 Castroville UV Index data.

Average daily maximum UV levels by month for Castroville, 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) 5 8 9 11 11 12 12 12 11 9 7 5