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Monthly climate in Holtville, California, United States

Last updated: March 2, 2024

Under the Köppen–Geiger climate classification Holtville features a hot desert climate (BWh). Temperatures typically range between 14 °C (58 °F) and 36 °C (98 °F) through the year, but rarely can drop to 1 °C (34 °F) or can rise to as high as 50 °C (123 °F). The average annual precipitation amounts to about 81 mm (3.2 inches) and receives 9 rainy days on the 1 mm (0.04 inches) threshold annually. Holtville enjoys an average of 3716 hours of sunshine throughout the year, and daylight varies from 10 hours 0 minutes to 14 hours 15 minutes per day.

Monthly average temperatures in Holtville, California, United States §

The warmest months in Holtville are June, July and August, with daily mean temperatures ranging from 33 to 36 °C (91 - 98 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 14 to 16 °C (58 - 62 °F) throughout the day. On average each year, Holtville experiences 248 days above 25 °C (77.0 °F) and 0 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Holtville, California, 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 29°C
(85°F)		 32°C
(90°F)		 37°C
(100°F)		 43°C
(110°F)		 44°C
(111°F)		 50°C
(122°F)		 49°C
(121°F)		 49°C
(120°F)		 50°C
(123°F)		 44°C
(111°F)		 35°C
(96°F)		 29°C
(84°F)
Mean maximum 27°C
(82°F)		 30°C
(86°F)		 35°C
(95°F)		 40°C
(104°F)		 42°C
(108°F)		 46°C
(114°F)		 48°C
(119°F)		 48°C
(118°F)		 46°C
(115°F)		 39°C
(103°F)		 34°C
(93°F)		 27°C
(81°F)
Average high 22°C
(73°F)		 24°C
(76°F)		 28°C
(82°F)		 33°C
(92°F)		 36°C
(97°F)		 42°C
(107°F)		 44°C
(111°F)		 44°C
(111°F)		 40°C
(104°F)		 34°C
(93°F)		 28°C
(82°F)		 21°C
(71°F)
Daily mean 15°C
(59°F)		 16°C
(62°F)		 20°C
(68°F)		 24°C
(76°F)		 27°C
(82°F)		 33°C
(91°F)		 36°C
(98°F)		 36°C
(98°F)		 32°C
(90°F)		 25°C
(78°F)		 19°C
(67°F)		 14°C
(58°F)
Average low 9°C
(48°F)		 9°C
(49°F)		 12°C
(54°F)		 16°C
(60°F)		 19°C
(66°F)		 24°C
(75°F)		 29°C
(84°F)		 29°C
(84°F)		 24°C
(76°F)		 17°C
(62°F)		 12°C
(54°F)		 8°C
(47°F)
Mean minimum 3°C
(38°F)		 3°C
(38°F)		 7°C
(44°F)		 11°C
(52°F)		 13°C
(55°F)		 18°C
(65°F)		 23°C
(73°F)		 24°C
(75°F)		 18°C
(65°F)		 11°C
(51°F)		 8°C
(46°F)		 4°C
(39°F)
Minimum 2°C
(36°F)		 1°C
(34°F)		 4°C
(40°F)		 9°C
(49°F)		 12°C
(53°F)		 16°C
(62°F)		 20°C
(69°F)		 21°C
(70°F)		 15°C
(60°F)		 8°C
(46°F)		 5°C
(42°F)		 3°C
(37°F)

Compare climate in Holtville with other places

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

Monthly average precipitation in Holtville, California, United States §

Holtville usually has the most precipitation in January, February and March, with an average of 1 rainy days and 12 mm (0.5 inches) of precipitation per month. The driest months in Holtville are May, June and October. On average, 2 mm (0.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Holtville, California, 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) 10 (0.4) 15 (0.6) 10 (0.4) 4 (0.2) 1 (0.1) 0 (0.0) 8 (0.3) 6 (0.3) 9 (0.4) 3 (0.1) 4 (0.2) 10 (0.4)
Average precipitation days (≥ 1 mm) 2 1 1 0 0 0 2 1 1 0 0 1

Monthly sunshine hours in Holtville, California, United States §

The sunniest months in Holtville are May, June and July, when the sun shines an average of 12 hours 16 minutes a day. Least sunny months in Holtville: January, February and December receive an average of 7 hours 40 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Holtville, California, 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 202 251 306 331 374 376 378 360 323 303 262 244
Mean daily daylight hours 10h 15m 11h 1m 12h 0m 13h 0m 13h 51m 14h 15m 14h 2m 13h 17m 12h 19m 11h 18m 10h 27m 10h 0m

Solar UV radiation in Holtville, California, United States §

Holtville experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 11 - 12, which corresponds to the Extreme category of sun exposure. January, November and December are in the Moderate exposure category. In these months, the maximum values of the UV index do not exceed 5. For more detailed information, check out our hourly Holtville UV Index data.

Average daily maximum UV levels by month for Holtville, California, 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) 4 6 9 10 11 12 12 11 10 7 5 4

Detailed Monthly Weather Insights for Holtville, California, United States

Discover in-depth weather details for every month in Holtville. Click through the links below for comprehensive overviews of temperature trends, precipitation levels, sunshine hours, and solar UV radiation specifics. Whether planning a visit or simply curious about Holtville's climate nuances, these monthly breakdowns provide the information you need for an informed understanding of what to expect throughout the year.

Each link leads to a detailed account of the typical weather conditions for that month, providing both locals and tourists with vital information to plan their daily activities, wardrobe, and travel itineraries accordingly.