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Monthly climate in Penn Valley, California, United States

Last updated: March 2, 2024

Under the Köppen–Geiger climate classification Penn Valley features a hot-summer Mediterranean climate (Csa). Temperatures typically range between 8 °C (47 °F) and 27 °C (81 °F) through the year, but rarely can drop to -4 °C (24 °F) or can rise to as high as 42 °C (108 °F). The average annual precipitation amounts to about 1094 mm (43.1 inches) and receives 70 rainy days on the 1 mm (0.04 inches) threshold annually. Penn Valley enjoys an average of 3387 hours of sunshine throughout the year, and daylight varies from 9 hours 26 minutes to 14 hours 52 minutes per day.

Monthly average temperatures in Penn Valley, California, United States §

The warmest months in Penn Valley are June, July and August, with daily mean temperatures ranging from 24 to 27 °C (76 - 81 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 8 to 9 °C (47 - 49 °F) throughout the day. On average each year, Penn Valley experiences 139 days above 25 °C (77.0 °F) and 11 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Penn Valley, 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)		 26°C
(78°F)		 29°C
(85°F)		 31°C
(88°F)		 36°C
(98°F)		 42°C
(108°F)		 42°C
(107°F)		 42°C
(107°F)		 42°C
(107°F)		 36°C
(97°F)		 28°C
(82°F)		 23°C
(74°F)
Mean maximum 19°C
(67°F)		 22°C
(73°F)		 26°C
(79°F)		 29°C
(85°F)		 34°C
(94°F)		 38°C
(101°F)		 40°C
(104°F)		 39°C
(103°F)		 39°C
(102°F)		 32°C
(90°F)		 25°C
(77°F)		 20°C
(67°F)
Average high 14°C
(57°F)		 16°C
(61°F)		 17°C
(63°F)		 21°C
(71°F)		 26°C
(79°F)		 31°C
(89°F)		 35°C
(95°F)		 34°C
(94°F)		 31°C
(87°F)		 25°C
(78°F)		 18°C
(65°F)		 13°C
(56°F)
Daily mean 9°C
(48°F)		 9°C
(49°F)		 11°C
(52°F)		 15°C
(59°F)		 19°C
(66°F)		 24°C
(76°F)		 27°C
(81°F)		 26°C
(79°F)		 23°C
(73°F)		 17°C
(63°F)		 12°C
(53°F)		 8°C
(47°F)
Average low 5°C
(40°F)		 4°C
(40°F)		 6°C
(43°F)		 9°C
(48°F)		 12°C
(54°F)		 16°C
(62°F)		 19°C
(66°F)		 18°C
(65°F)		 15°C
(59°F)		 10°C
(50°F)		 6°C
(43°F)		 4°C
(39°F)
Mean minimum -2°C
(29°F)		 -3°C
(27°F)		 -1°C
(31°F)		 3°C
(37°F)		 6°C
(44°F)		 10°C
(51°F)		 15°C
(59°F)		 14°C
(57°F)		 9°C
(49°F)		 4°C
(40°F)		 0°C
(33°F)		 -1°C
(31°F)
Minimum -3°C
(27°F)		 -4°C
(24°F)		 -2°C
(28°F)		 -0°C
(32°F)		 3°C
(38°F)		 8°C
(47°F)		 14°C
(57°F)		 12°C
(55°F)		 6°C
(44°F)		 3°C
(38°F)		 -1°C
(30°F)		 -2°C
(29°F)

Compare climate in Penn Valley with other places

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

Monthly average precipitation in Penn Valley, California, United States §

Penn Valley usually has the most precipitation in January, February and March, with an average of 11 rainy days and 196 mm (7.7 inches) of precipitation per month. The driest months in Penn Valley are June, July and August. On average, 3 mm (0.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Penn Valley, 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) 196 (7.7) 202 (8.0) 191 (7.5) 89 (3.5) 48 (1.9) 9 (0.3) 1 (0.0) 1 (0.0) 12 (0.5) 62 (2.4) 115 (4.5) 170 (6.7)
Average precipitation days (≥ 1 mm) 11 9 14 7 5 1 0 0 2 3 7 11

Monthly sunshine hours in Penn Valley, California, United States §

The sunniest months in Penn Valley are June, July and August, when the sun shines an average of 12 hours 26 minutes a day. Least sunny months in Penn Valley: January, February and December receive an average of 5 hours 47 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Penn Valley, 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 141 200 248 295 358 385 396 361 314 282 215 186
Mean daily daylight hours 9h 45m 10h 44m 11h 59m 13h 15m 14h 20m 14h 52m 14h 34m 13h 36m 12h 23m 11h 6m 10h 0m 9h 26m

Solar UV radiation in Penn Valley, California, United States §

Penn Valley experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 10 - 11, which corresponds to the Very High / 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 Penn Valley UV Index data.

Average daily maximum UV levels by month for Penn Valley, 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) 3 5 7 8 10 11 11 10 9 6 4 3

Detailed Monthly Weather Insights for Penn Valley, California, United States

Discover in-depth weather details for every month in Penn Valley. 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 Penn Valley'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.