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Monthly climate in Alturas, California, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Alturas features a warm-summer Mediterranean climate (Csb).Temperatures typically range between -1 °C (31 °F) and 23 °C (74 °F) through the year, but rarely can drop to -20 °C (-3 °F) or can rise to as high as 38 °C (101 °F).The average annual precipitation amounts to about 526 mm (20.7 inches) and receives 85 rainy days on the 1 mm (0.04 inches) threshold annually.Alturas enjoys an average of 3354 hours of sunshine throughout the year, and daylight varies from 9 hours 12 minutes to 15 hours 6 minutes per day.

Monthly average temperatures in Alturas, California, United States §

The warmest months in Alturas are June, July and August, with daily mean temperatures ranging from 18 to 23 °C (65 - 74 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -1 to 0 °C (31 - 33 °F) throughout the day. On average each year, Alturas experiences 86 days above 25 °C (77.0 °F) and 130 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Alturas, 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 12°C
(54°F)		 16°C
(61°F)		 22°C
(71°F)		 27°C
(81°F)		 32°C
(90°F)		 38°C
(100°F)		 38°C
(101°F)		 37°C
(98°F)		 36°C
(98°F)		 30°C
(87°F)		 24°C
(75°F)		 16°C
(61°F)
Mean maximum 10°C
(50°F)		 13°C
(55°F)		 18°C
(64°F)		 24°C
(75°F)		 29°C
(84°F)		 32°C
(89°F)		 36°C
(97°F)		 36°C
(96°F)		 33°C
(93°F)		 25°C
(78°F)		 19°C
(67°F)		 11°C
(52°F)
Average high 5°C
(41°F)		 6°C
(43°F)		 9°C
(49°F)		 14°C
(57°F)		 19°C
(67°F)		 26°C
(78°F)		 32°C
(89°F)		 31°C
(87°F)		 25°C
(77°F)		 17°C
(63°F)		 11°C
(51°F)		 4°C
(40°F)
Daily mean -0°C
(32°F)		 0°C
(33°F)		 3°C
(38°F)		 7°C
(45°F)		 13°C
(55°F)		 18°C
(65°F)		 23°C
(74°F)		 22°C
(72°F)		 17°C
(63°F)		 9°C
(49°F)		 4°C
(40°F)		 -1°C
(31°F)
Average low -4°C
(25°F)		 -5°C
(24°F)		 -2°C
(28°F)		 1°C
(34°F)		 6°C
(42°F)		 10°C
(51°F)		 15°C
(59°F)		 14°C
(57°F)		 9°C
(48°F)		 2°C
(36°F)		 -1°C
(30°F)		 -5°C
(22°F)
Mean minimum -14°C
(6°F)		 -14°C
(7°F)		 -11°C
(13°F)		 -6°C
(21°F)		 -1°C
(30°F)		 2°C
(35°F)		 10°C
(50°F)		 9°C
(49°F)		 2°C
(35°F)		 -5°C
(23°F)		 -9°C
(16°F)		 -14°C
(6°F)
Minimum -20°C
(-3°F)		 -16°C
(4°F)		 -15°C
(6°F)		 -8°C
(18°F)		 -3°C
(26°F)		 0°C
(32°F)		 7°C
(46°F)		 8°C
(46°F)		 -1°C
(31°F)		 -8°C
(18°F)		 -11°C
(13°F)		 -16°C
(3°F)

Compare climate in Alturas with other places

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

Monthly average precipitation in Alturas, California, United States §

Alturas usually has the most precipitation in January, February and March, with an average of 12 rainy days and 74 mm (2.9 inches) of precipitation per month.The driest months in Alturas are June, July and August. On average, 9 mm (0.4 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Alturas, 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) 74 (2.9) 74 (2.9) 72 (2.9) 54 (2.1) 53 (2.1) 18 (0.7) 3 (0.1) 6 (0.2) 20 (0.8) 35 (1.4) 47 (1.8) 69 (2.7)
Average precipitation days (≥ 1 mm) 12 11 13 9 8 3 1 2 3 4 8 11

Monthly sunshine hours in Alturas, California, United States §

The sunniest months in Alturas are June, July and August, when the sun shines an average of 12 hours 30 minutes a day.Least sunny months in Alturas: January, February and December receive an average of 5 hours 33 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Alturas, 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 130 199 255 292 355 385 402 363 318 269 206 176
Mean daily daylight hours 9h 33m 10h 37m 11h 58m 13h 21m 14h 32m 15h 6m 14h 47m 13h 44m 12h 24m 11h 2m 9h 49m 9h 12m

Solar UV radiation in Alturas, California, United States §

Alturas experiences the highest level of ultraviolet (UV) radiation in May, June 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 4. For more detailed information, check out our hourly Alturas UV Index data.

Average daily maximum UV levels by month for Alturas, 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 7 9 11 12 11 11 9 7 4 3