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Monthly climate in Mammoth Lakes, California, United States

Last updated: March 2, 2024

Under the Köppen–Geiger climate classification Mammoth Lakes features a warm-summer Mediterranean climate (Csb). Temperatures typically range between -5 °C (24 °F) and 18 °C (64 °F) through the year, but rarely can drop to -23 °C (-9 °F) or can rise to as high as 31 °C (87 °F). The average annual precipitation amounts to about 637 mm (25.1 inches) and receives 65 rainy days on the 1 mm (0.04 inches) threshold annually. Mammoth Lakes enjoys an average of 3585 hours of sunshine throughout the year, and daylight varies from 9 hours 34 minutes to 14 hours 43 minutes per day.

Monthly average temperatures in Mammoth Lakes, California, United States §

The warmest months in Mammoth Lakes are June, July and August, with daily mean temperatures ranging from 14 to 18 °C (57 - 64 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -5 to -4 °C (24 - 25 °F) throughout the day. On average each year, Mammoth Lakes experiences 40 days above 25 °C (77.0 °F) and 200 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Mammoth Lakes, 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 10°C
(51°F)		 13°C
(56°F)		 15°C
(58°F)		 18°C
(65°F)		 25°C
(78°F)		 29°C
(84°F)		 31°C
(87°F)		 30°C
(86°F)		 30°C
(86°F)		 24°C
(75°F)		 19°C
(66°F)		 12°C
(53°F)
Mean maximum 9°C
(48°F)		 9°C
(49°F)		 11°C
(52°F)		 16°C
(62°F)		 20°C
(68°F)		 25°C
(77°F)		 29°C
(85°F)		 29°C
(84°F)		 28°C
(82°F)		 21°C
(70°F)		 18°C
(64°F)		 9°C
(48°F)
Average high 2°C
(36°F)		 2°C
(37°F)		 3°C
(39°F)		 8°C
(47°F)		 13°C
(55°F)		 21°C
(70°F)		 25°C
(78°F)		 25°C
(78°F)		 21°C
(71°F)		 15°C
(60°F)		 9°C
(49°F)		 2°C
(36°F)
Daily mean -5°C
(24°F)		 -4°C
(25°F)		 -2°C
(28°F)		 2°C
(36°F)		 6°C
(43°F)		 14°C
(57°F)		 18°C
(64°F)		 17°C
(63°F)		 13°C
(56°F)		 7°C
(44°F)		 2°C
(35°F)		 -4°C
(25°F)
Average low -10°C
(15°F)		 -10°C
(15°F)		 -8°C
(18°F)		 -4°C
(25°F)		 -1°C
(31°F)		 6°C
(43°F)		 10°C
(50°F)		 9°C
(49°F)		 6°C
(42°F)		 -0°C
(32°F)		 -4°C
(25°F)		 -9°C
(16°F)
Mean minimum -20°C
(-4°F)		 -19°C
(-2°F)		 -16°C
(4°F)		 -12°C
(11°F)		 -8°C
(18°F)		 -2°C
(29°F)		 6°C
(42°F)		 5°C
(41°F)		 -1°C
(30°F)		 -8°C
(18°F)		 -14°C
(8°F)		 -18°C
(-0°F)
Minimum -23°C
(-9°F)		 -21°C
(-6°F)		 -20°C
(-4°F)		 -15°C
(5°F)		 -12°C
(11°F)		 -4°C
(25°F)		 4°C
(39°F)		 3°C
(38°F)		 -6°C
(22°F)		 -10°C
(14°F)		 -17°C
(2°F)		 -19°C
(-2°F)

Compare climate in Mammoth Lakes with other places

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

Monthly average precipitation in Mammoth Lakes, California, United States §

Mammoth Lakes usually has the most precipitation in January, February and March, with an average of 8 rainy days and 116 mm (4.6 inches) of precipitation per month. The driest months in Mammoth Lakes are June, August and September. On average, 10 mm (0.4 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Mammoth Lakes, 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) 130 (5.1) 129 (5.1) 88 (3.5) 49 (1.9) 40 (1.6) 11 (0.4) 17 (0.7) 11 (0.4) 9 (0.4) 23 (0.9) 48 (1.9) 81 (3.2)
Average precipitation days (≥ 1 mm) 7 9 10 6 9 3 4 3 2 1 4 7

Monthly sunshine hours in Mammoth Lakes, California, United States §

The sunniest months in Mammoth Lakes are May, June and July, when the sun shines an average of 12 hours 27 minutes a day. Least sunny months in Mammoth Lakes: January, February and December receive an average of 6 hours 43 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Mammoth Lakes, 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 171 229 281 320 367 388 390 363 324 293 242 211
Mean daily daylight hours 9h 52m 10h 48m 11h 59m 13h 12m 14h 13m 14h 43m 14h 26m 13h 32m 12h 22m 11h 9m 10h 6m 9h 34m

Solar UV radiation in Mammoth Lakes, California, United States §

Mammoth Lakes experiences the highest level of ultraviolet (UV) radiation in April, May and July, when the maximum UV index can reach values of 13 - 13, which corresponds to the Extreme category of sun exposure. January, November and December are in the Moderate / High exposure category. In these months, the maximum values of the UV index do not exceed 6. For more detailed information, check out our hourly Mammoth Lakes UV Index data.

Average daily maximum UV levels by month for Mammoth Lakes, 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) 5 7 10 13 13 13 13 12 10 8 6 4

Detailed Monthly Weather Insights for Mammoth Lakes, California, United States

Discover in-depth weather details for every month in Mammoth Lakes. 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 Mammoth Lakes'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.