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Monthly climate in Alpine, California, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Alpine features a hot-summer Mediterranean climate (Csa).Temperatures typically range between 12 °C (53 °F) and 24 °C (76 °F) through the year, but rarely can drop to -2 °C (29 °F) or can rise to as high as 43 °C (109 °F).The average annual precipitation amounts to about 420 mm (16.5 inches) and receives 43 rainy days on the 1 mm (0.04 inches) threshold annually.Alpine enjoys an average of 3671 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 Alpine, California, United States §

The warmest months in Alpine are July, August and September, with daily mean temperatures ranging from 23 to 24 °C (73 - 76 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 12 to 12 °C (53 - 54 °F) throughout the day. On average each year, Alpine experiences 133 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 Alpine, 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 30°C
(86°F)		 28°C
(83°F)		 29°C
(84°F)		 34°C
(94°F)		 32°C
(90°F)		 35°C
(96°F)		 43°C
(109°F)		 37°C
(99°F)		 42°C
(109°F)		 37°C
(100°F)		 33°C
(92°F)		 28°C
(82°F)
Mean maximum 26°C
(78°F)		 25°C
(78°F)		 27°C
(80°F)		 31°C
(88°F)		 30°C
(87°F)		 32°C
(90°F)		 35°C
(96°F)		 35°C
(96°F)		 37°C
(99°F)		 34°C
(93°F)		 32°C
(89°F)		 25°C
(78°F)
Average high 18°C
(65°F)		 18°C
(64°F)		 18°C
(65°F)		 21°C
(71°F)		 22°C
(72°F)		 26°C
(80°F)		 30°C
(86°F)		 31°C
(87°F)		 29°C
(85°F)		 26°C
(80°F)		 23°C
(73°F)		 18°C
(65°F)
Daily mean 12°C
(54°F)		 12°C
(53°F)		 12°C
(55°F)		 15°C
(60°F)		 17°C
(62°F)		 20°C
(69°F)		 24°C
(75°F)		 24°C
(76°F)		 23°C
(73°F)		 19°C
(67°F)		 16°C
(61°F)		 12°C
(54°F)
Average low 7°C
(45°F)		 7°C
(44°F)		 8°C
(46°F)		 10°C
(50°F)		 12°C
(54°F)		 15°C
(59°F)		 19°C
(66°F)		 19°C
(67°F)		 18°C
(64°F)		 14°C
(57°F)		 11°C
(51°F)		 7°C
(45°F)
Mean minimum 2°C
(35°F)		 1°C
(34°F)		 3°C
(37°F)		 6°C
(43°F)		 7°C
(44°F)		 11°C
(52°F)		 15°C
(58°F)		 15°C
(60°F)		 13°C
(56°F)		 8°C
(47°F)		 6°C
(44°F)		 2°C
(36°F)
Minimum 0°C
(32°F)		 -2°C
(29°F)		 1°C
(34°F)		 4°C
(40°F)		 6°C
(43°F)		 10°C
(50°F)		 13°C
(56°F)		 15°C
(59°F)		 10°C
(51°F)		 6°C
(43°F)		 3°C
(38°F)		 1°C
(35°F)

Compare climate in Alpine with other places

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

Monthly average precipitation in Alpine, California, United States §

Alpine usually has the most precipitation in January, February and March, with an average of 8 rainy days and 76 mm (3.0 inches) of precipitation per month.The driest months in Alpine are June, August and September. On average, 4 mm (0.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Alpine, 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) 70 (2.7) 86 (3.4) 71 (2.8) 28 (1.1) 27 (1.1) 2 (0.1) 7 (0.3) 4 (0.2) 5 (0.2) 15 (0.6) 36 (1.4) 68 (2.7)
Average precipitation days (≥ 1 mm) 6 8 10 3 4 0 1 1 1 2 2 5

Monthly sunshine hours in Alpine, California, United States §

The sunniest months in Alpine are May, June and July, when the sun shines an average of 12 hours 10 minutes a day.Least sunny months in Alpine: January, February and December receive an average of 7 hours 25 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Alpine, 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 196 246 302 329 369 371 378 362 321 300 260 232
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 26m 10h 0m

Solar UV radiation in Alpine, California, United States §

Alpine experiences the highest level of ultraviolet (UV) radiation in June, July and September, 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 Alpine UV Index data.

Average daily maximum UV levels by month for Alpine, 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 11 8 5 4