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Monthly climate in Hollister, California, United States

Last updated: March 2, 2024

Under the Köppen–Geiger climate classification Hollister features a warm-summer Mediterranean climate (Csb). Temperatures typically range between 10 °C (50 °F) and 19 °C (67 °F) through the year, but rarely can drop to -3 °C (27 °F) or can rise to as high as 38 °C (101 °F). The average annual precipitation amounts to about 440 mm (17.3 inches) and receives 48 rainy days on the 1 mm (0.04 inches) threshold annually. Hollister enjoys an average of 3486 hours of sunshine throughout the year, and daylight varies from 9 hours 39 minutes to 14 hours 37 minutes per day.

Monthly average temperatures in Hollister, California, United States §

The warmest months in Hollister are July, August and September, with daily mean temperatures ranging from 18 to 19 °C (65 - 67 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 10 to 10 °C (50 - 51 °F) throughout the day. On average each year, Hollister experiences 52 days above 25 °C (77.0 °F) and 4 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Hollister, 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 23°C
(74°F)		 26°C
(78°F)		 26°C
(79°F)		 31°C
(88°F)		 31°C
(87°F)		 34°C
(94°F)		 31°C
(89°F)		 36°C
(98°F)		 38°C
(101°F)		 32°C
(90°F)		 27°C
(81°F)		 25°C
(77°F)
Mean maximum 20°C
(69°F)		 22°C
(72°F)		 24°C
(75°F)		 27°C
(80°F)		 27°C
(81°F)		 30°C
(87°F)		 30°C
(86°F)		 32°C
(90°F)		 33°C
(92°F)		 30°C
(86°F)		 25°C
(77°F)		 21°C
(70°F)
Average high 15°C
(60°F)		 16°C
(61°F)		 17°C
(62°F)		 19°C
(66°F)		 20°C
(69°F)		 23°C
(74°F)		 25°C
(77°F)		 25°C
(78°F)		 25°C
(77°F)		 23°C
(74°F)		 19°C
(66°F)		 15°C
(60°F)
Daily mean 10°C
(50°F)		 10°C
(51°F)		 11°C
(53°F)		 13°C
(56°F)		 14°C
(58°F)		 17°C
(63°F)		 18°C
(65°F)		 19°C
(67°F)		 18°C
(65°F)		 16°C
(61°F)		 13°C
(55°F)		 10°C
(50°F)
Average low 6°C
(42°F)		 5°C
(41°F)		 6°C
(44°F)		 8°C
(47°F)		 10°C
(50°F)		 12°C
(54°F)		 13°C
(56°F)		 14°C
(58°F)		 13°C
(56°F)		 10°C
(51°F)		 7°C
(45°F)		 5°C
(41°F)
Mean minimum -1°C
(31°F)		 -1°C
(31°F)		 1°C
(34°F)		 4°C
(39°F)		 6°C
(43°F)		 8°C
(47°F)		 10°C
(51°F)		 12°C
(53°F)		 9°C
(48°F)		 5°C
(42°F)		 2°C
(36°F)		 -1°C
(31°F)
Minimum -3°C
(28°F)		 -3°C
(27°F)		 -0°C
(32°F)		 2°C
(36°F)		 4°C
(39°F)		 7°C
(45°F)		 9°C
(49°F)		 11°C
(52°F)		 7°C
(45°F)		 3°C
(38°F)		 -1°C
(31°F)		 -2°C
(28°F)

Compare climate in Hollister with other places

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

Monthly average precipitation in Hollister, California, United States §

Hollister usually has the most precipitation in January, March and December, with an average of 9 rainy days and 88 mm (3.5 inches) of precipitation per month. The driest months in Hollister are June, July and August. On average, 1 mm (0.0 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Hollister, 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) 99 (3.9) 76 (3.0) 83 (3.3) 26 (1.0) 17 (0.7) 1 (0.0) 0 (0.0) 1 (0.0) 5 (0.2) 15 (0.6) 32 (1.3) 83 (3.3)
Average precipitation days (≥ 1 mm) 8 8 12 4 3 0 0 0 0 1 4 8

Monthly sunshine hours in Hollister, California, United States §

The sunniest months in Hollister are May, June and July, when the sun shines an average of 12 hours 18 minutes a day. Least sunny months in Hollister: January, February and December receive an average of 6 hours 29 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Hollister, 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 161 221 265 303 363 379 389 357 315 289 233 206
Mean daily daylight hours 9h 56m 10h 50m 11h 59m 13h 9m 14h 8m 14h 37m 14h 21m 13h 29m 12h 21m 11h 11m 10h 10m 9h 39m

Solar UV radiation in Hollister, California, United States §

Hollister experiences the highest level of ultraviolet (UV) radiation in May, June and July, when the maximum UV index can reach values of 11 - 11, which corresponds to the Extreme category of sun exposure. January, February 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 Hollister UV Index data.

Average daily maximum UV levels by month for Hollister, 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 5 8 9 11 11 11 10 9 7 5 3

Detailed Monthly Weather Insights for Hollister, California, United States

Discover in-depth weather details for every month in Hollister. 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 Hollister'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.