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Monthly climate in Big Bear Lake, California, United States

Last updated: March 2, 2024

Under the Köppen–Geiger climate classification Big Bear Lake features a hot-summer Mediterranean climate (Csa). Temperatures typically range between 7 °C (46 °F) and 25 °C (77 °F) through the year, but rarely can drop to -7 °C (19 °F) or can rise to as high as 39 °C (102 °F). The average annual precipitation amounts to about 302 mm (11.9 inches) and receives 42 rainy days on the 1 mm (0.04 inches) threshold annually. Big Bear Lake enjoys an average of 3658 hours of sunshine throughout the year, and daylight varies from 9 hours 53 minutes to 14 hours 23 minutes per day.

Monthly average temperatures in Big Bear Lake, California, United States §

The warmest months in Big Bear Lake are June, July and August, with daily mean temperatures ranging from 22 to 25 °C (72 - 77 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 7 to 8 °C (46 - 46 °F) throughout the day. On average each year, Big Bear Lake experiences 120 days above 25 °C (77.0 °F) and 18 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Big Bear Lake, 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 22°C
(72°F)		 22°C
(72°F)		 27°C
(81°F)		 30°C
(86°F)		 33°C
(92°F)		 37°C
(99°F)		 38°C
(101°F)		 37°C
(98°F)		 39°C
(102°F)		 33°C
(92°F)		 26°C
(79°F)		 22°C
(71°F)
Mean maximum 20°C
(68°F)		 20°C
(68°F)		 24°C
(75°F)		 28°C
(83°F)		 30°C
(86°F)		 33°C
(92°F)		 36°C
(98°F)		 36°C
(97°F)		 35°C
(96°F)		 29°C
(85°F)		 25°C
(78°F)		 21°C
(70°F)
Average high 13°C
(56°F)		 13°C
(56°F)		 15°C
(60°F)		 20°C
(69°F)		 23°C
(73°F)		 29°C
(84°F)		 32°C
(90°F)		 32°C
(89°F)		 29°C
(84°F)		 23°C
(74°F)		 18°C
(65°F)		 13°C
(56°F)
Daily mean 7°C
(46°F)		 8°C
(46°F)		 9°C
(49°F)		 14°C
(57°F)		 16°C
(61°F)		 22°C
(72°F)		 25°C
(77°F)		 25°C
(77°F)		 22°C
(71°F)		 16°C
(61°F)		 12°C
(54°F)		 7°C
(46°F)
Average low 3°C
(38°F)		 3°C
(38°F)		 4°C
(40°F)		 8°C
(46°F)		 10°C
(50°F)		 15°C
(59°F)		 18°C
(65°F)		 18°C
(65°F)		 16°C
(60°F)		 10°C
(51°F)		 7°C
(45°F)		 3°C
(38°F)
Mean minimum -2°C
(28°F)		 -3°C
(27°F)		 -2°C
(29°F)		 2°C
(35°F)		 3°C
(37°F)		 8°C
(47°F)		 14°C
(58°F)		 13°C
(56°F)		 10°C
(50°F)		 4°C
(39°F)		 1°C
(34°F)		 -3°C
(27°F)
Minimum -7°C
(19°F)		 -5°C
(23°F)		 -4°C
(25°F)		 0°C
(32°F)		 1°C
(33°F)		 7°C
(45°F)		 11°C
(52°F)		 12°C
(55°F)		 7°C
(44°F)		 2°C
(36°F)		 -3°C
(27°F)		 -7°C
(19°F)

Compare climate in Big Bear Lake with other places

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

Monthly average precipitation in Big Bear Lake, California, United States §

Big Bear Lake usually has the most precipitation in January, February and December, with an average of 4 rainy days and 45 mm (1.8 inches) of precipitation per month. The driest months in Big Bear Lake are June, September and October. On average, 9 mm (0.3 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Big Bear Lake, 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) 44 (1.7) 46 (1.8) 42 (1.6) 21 (0.8) 14 (0.6) 5 (0.2) 29 (1.1) 19 (0.8) 12 (0.5) 8 (0.3) 16 (0.6) 45 (1.8)
Average precipitation days (≥ 1 mm) 4 5 7 2 3 1 6 5 2 1 2 4

Monthly sunshine hours in Big Bear Lake, California, United States §

The sunniest months in Big Bear Lake are May, June and July, when the sun shines an average of 12 hours 17 minutes a day. Least sunny months in Big Bear Lake: January, February and December receive an average of 7 hours 16 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Big Bear Lake, 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 190 243 294 327 369 379 382 362 321 299 257 227
Mean daily daylight hours 10h 9m 10h 57m 11h 59m 13h 3m 13h 57m 14h 23m 14h 8m 13h 21m 12h 20m 11h 16m 10h 21m 9h 53m

Solar UV radiation in Big Bear Lake, California, United States §

Big Bear Lake experiences the highest level of ultraviolet (UV) radiation in April, June and July, 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 Big Bear Lake UV Index data.

Average daily maximum UV levels by month for Big Bear Lake, 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 11 11 12 12 11 10 8 5 4

Detailed Monthly Weather Insights for Big Bear Lake, California, United States

Discover in-depth weather details for every month in Big Bear Lake. 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 Big Bear Lake'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.