Monthly climate in Alta Sierra, California, United States

Last updated: March 2, 2024

Under the Köppen–Geiger climate classification Alta Sierra features a cold semi-arid climate (BSk). Temperatures typically range between 4 °C (39 °F) and 24 °C (76 °F) through the year, but rarely can drop to -14 °C (8 °F) or can rise to as high as 37 °C (98 °F). The average annual precipitation amounts to about 482 mm (19.0 inches) and receives 49 rainy days on the 1 mm (0.04 inches) threshold annually. Alta Sierra enjoys an average of 3647 hours of sunshine throughout the year, and daylight varies from 9 hours 46 minutes to 14 hours 30 minutes per day.

Monthly average temperatures in Alta Sierra, California, United States §

The warmest months in Alta Sierra are June, July and August, with daily mean temperatures ranging from 20 to 24 °C (69 - 76 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 4 to 4 °C (39 - 40 °F) throughout the day. On average each year, Alta Sierra experiences 93 days above 25 °C (77.0 °F) and 69 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Alta Sierra, 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 19°C
(67°F)
20°C
(68°F)
23°C
(73°F)
26°C
(78°F)
32°C
(89°F)
34°C
(94°F)
37°C
(98°F)
35°C
(96°F)
35°C
(95°F)
30°C
(86°F)
23°C
(74°F)
21°C
(70°F)
Mean maximum 16°C
(61°F)
16°C
(62°F)
20°C
(68°F)
24°C
(76°F)
27°C
(81°F)
31°C
(87°F)
34°C
(93°F)
34°C
(93°F)
33°C
(92°F)
27°C
(81°F)
22°C
(72°F)
17°C
(63°F)
Average high 9°C
(49°F)
10°C
(50°F)
12°C
(53°F)
16°C
(61°F)
20°C
(68°F)
26°C
(80°F)
30°C
(87°F)
30°C
(86°F)
27°C
(80°F)
21°C
(70°F)
16°C
(61°F)
10°C
(50°F)
Daily mean 4°C
(39°F)
4°C
(40°F)
6°C
(43°F)
10°C
(51°F)
14°C
(57°F)
20°C
(69°F)
24°C
(76°F)
23°C
(74°F)
20°C
(68°F)
14°C
(57°F)
9°C
(48°F)
4°C
(40°F)
Average low -1°C
(31°F)
-1°C
(31°F)
1°C
(33°F)
4°C
(40°F)
8°C
(46°F)
13°C
(56°F)
17°C
(63°F)
16°C
(62°F)
12°C
(55°F)
7°C
(44°F)
3°C
(37°F)
-1°C
(31°F)
Mean minimum -6°C
(21°F)
-8°C
(18°F)
-8°C
(19°F)
-2°C
(29°F)
1°C
(34°F)
5°C
(40°F)
13°C
(56°F)
11°C
(53°F)
6°C
(42°F)
0°C
(33°F)
-4°C
(25°F)
-7°C
(20°F)
Minimum -10°C
(15°F)
-14°C
(8°F)
-10°C
(13°F)
-5°C
(23°F)
-1°C
(30°F)
2°C
(36°F)
11°C
(53°F)
11°C
(52°F)
1°C
(35°F)
-2°C
(29°F)
-10°C
(15°F)
-12°C
(10°F)

Compare climate in Alta Sierra with other places

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

Monthly average precipitation in Alta Sierra, California, United States §

Alta Sierra usually has the most precipitation in January, February and March, with an average of 8 rainy days and 92 mm (3.6 inches) of precipitation per month. The driest months in Alta Sierra 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 Alta Sierra, 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) 102 (4.0) 84 (3.3) 89 (3.5) 41 (1.6) 32 (1.2) 5 (0.2) 5 (0.2) 3 (0.1) 5 (0.2) 11 (0.4) 34 (1.3) 70 (2.8)
Average precipitation days (≥ 1 mm) 7 7 11 5 5 1 1 0 1 1 3 7

Monthly sunshine hours in Alta Sierra, California, United States §

The sunniest months in Alta Sierra are May, June and July, when the sun shines an average of 12 hours 21 minutes a day. Least sunny months in Alta Sierra: January, February and December receive an average of 7 hours 11 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Alta Sierra, 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 183 240 295 329 370 381 385 361 318 296 254 230
Mean daily daylight hours 10h 2m 10h 53m 11h 59m 13h 7m 14h 3m 14h 30m 14h 15m 13h 25m 12h 20m 11h 13m 10h 15m 9h 46m

Solar UV radiation in Alta Sierra, California, United States §

Alta Sierra 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 Alta Sierra UV Index data.

Average daily maximum UV levels by month for Alta Sierra, 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 8 5 4

Detailed Monthly Weather Insights for Alta Sierra, California, United States

Discover in-depth weather details for every month in Alta Sierra. 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 Alta Sierra'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.