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Monthly climate in Penngrove, California, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Penngrove features a warm-summer Mediterranean climate (Csb).Temperatures typically range between 9 °C (49 °F) and 18 °C (65 °F) through the year, but rarely can drop to -2 °C (29 °F) or can rise to as high as 36 °C (96 °F).The average annual precipitation amounts to about 648 mm (25.5 inches) and receives 52 rainy days on the 1 mm (0.04 inches) threshold annually.Penngrove enjoys an average of 3381 hours of sunshine throughout the year, and daylight varies from 9 hours 32 minutes to 14 hours 46 minutes per day.

Monthly average temperatures in Penngrove, California, United States §

The warmest months in Penngrove are July, August and September, with daily mean temperatures ranging from 18 to 18 °C (65 - 65 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 9 to 10 °C (49 - 51 °F) throughout the day. On average each year, Penngrove experiences 51 days above 25 °C (77.0 °F) and 1 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Penngrove, 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 23°C
(74°F)		 24°C
(76°F)		 25°C
(77°F)		 28°C
(82°F)		 31°C
(88°F)		 33°C
(92°F)		 32°C
(90°F)		 33°C
(92°F)		 36°C
(96°F)		 32°C
(90°F)		 25°C
(78°F)		 22°C
(72°F)
Mean maximum 19°C
(67°F)		 21°C
(70°F)		 23°C
(74°F)		 25°C
(78°F)		 28°C
(82°F)		 31°C
(87°F)		 30°C
(86°F)		 31°C
(87°F)		 32°C
(90°F)		 29°C
(85°F)		 22°C
(72°F)		 19°C
(66°F)
Average high 14°C
(57°F)		 16°C
(60°F)		 16°C
(61°F)		 18°C
(65°F)		 21°C
(69°F)		 24°C
(75°F)		 24°C
(76°F)		 24°C
(76°F)		 25°C
(76°F)		 23°C
(73°F)		 18°C
(64°F)		 14°C
(57°F)
Daily mean 10°C
(50°F)		 10°C
(51°F)		 11°C
(52°F)		 13°C
(56°F)		 15°C
(60°F)		 18°C
(65°F)		 18°C
(65°F)		 18°C
(65°F)		 18°C
(65°F)		 16°C
(61°F)		 12°C
(54°F)		 9°C
(49°F)
Average low 6°C
(43°F)		 6°C
(42°F)		 7°C
(44°F)		 9°C
(48°F)		 10°C
(51°F)		 13°C
(55°F)		 13°C
(56°F)		 14°C
(57°F)		 13°C
(56°F)		 11°C
(51°F)		 7°C
(45°F)		 5°C
(42°F)
Mean minimum 1°C
(34°F)		 0°C
(33°F)		 2°C
(36°F)		 4°C
(40°F)		 7°C
(45°F)		 10°C
(50°F)		 11°C
(52°F)		 11°C
(52°F)		 9°C
(49°F)		 6°C
(43°F)		 2°C
(35°F)		 1°C
(34°F)
Minimum -1°C
(30°F)		 -2°C
(29°F)		 1°C
(34°F)		 3°C
(38°F)		 5°C
(40°F)		 9°C
(48°F)		 11°C
(52°F)		 10°C
(51°F)		 8°C
(48°F)		 4°C
(40°F)		 0°C
(33°F)		 0°C
(33°F)

Compare climate in Penngrove with other places

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

Monthly average precipitation in Penngrove, California, United States §

Penngrove usually has the most precipitation in January, February and December, with an average of 8 rainy days and 127 mm (5.0 inches) of precipitation per month.The driest months in Penngrove are June, July and August. On average, 1 mm (0.0 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Penngrove, 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) 131 (5.2) 147 (5.8) 93 (3.7) 45 (1.8) 27 (1.0) 2 (0.1) 1 (0.0) 1 (0.0) 2 (0.1) 38 (1.5) 59 (2.3) 103 (4.1)
Average precipitation days (≥ 1 mm) 9 8 11 5 3 0 0 0 0 2 5 9

Monthly sunshine hours in Penngrove, California, United States §

The sunniest months in Penngrove are May, June and July, when the sun shines an average of 12 hours 15 minutes a day.Least sunny months in Penngrove: January, February and December receive an average of 5 hours 53 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Penngrove, 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 141 210 261 297 356 382 389 348 312 277 218 184
Mean daily daylight hours 9h 50m 10h 46m 11h 59m 13h 13m 14h 15m 14h 46m 14h 29m 13h 33m 12h 22m 11h 8m 10h 4m 9h 32m

Solar UV radiation in Penngrove, California, United States §

Penngrove 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 Penngrove UV Index data.

Average daily maximum UV levels by month for Penngrove, 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 9 10 11 11 10 9 6 4 3