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Monthly climate in Cool, California, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Cool features a hot-summer Mediterranean climate (Csa).Temperatures typically range between 8 °C (47 °F) and 27 °C (80 °F) through the year, but rarely can drop to -4 °C (25 °F) or can rise to as high as 42 °C (108 °F).The average annual precipitation amounts to about 1270 mm (50.0 inches) and receives 70 rainy days on the 1 mm (0.04 inches) threshold annually.Cool enjoys an average of 3387 hours of sunshine throughout the year, and daylight varies from 9 hours 28 minutes to 14 hours 50 minutes per day.

Monthly average temperatures in Cool, California, United States §

The warmest months in Cool are June, July and August, with daily mean temperatures ranging from 23 to 27 °C (74 - 80 °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, Cool experiences 134 days above 25 °C (77.0 °F) and 13 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Cool, 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
(79°F)		 29°C
(84°F)		 31°C
(88°F)		 36°C
(96°F)		 41°C
(106°F)		 42°C
(107°F)		 42°C
(108°F)		 42°C
(108°F)		 36°C
(97°F)		 28°C
(82°F)		 22°C
(73°F)
Mean maximum 20°C
(68°F)		 22°C
(72°F)		 26°C
(79°F)		 29°C
(84°F)		 34°C
(93°F)		 37°C
(100°F)		 40°C
(103°F)		 39°C
(103°F)		 39°C
(102°F)		 31°C
(89°F)		 25°C
(78°F)		 20°C
(68°F)
Average high 13°C
(57°F)		 15°C
(60°F)		 17°C
(62°F)		 21°C
(70°F)		 25°C
(77°F)		 31°C
(87°F)		 35°C
(95°F)		 34°C
(93°F)		 31°C
(87°F)		 25°C
(77°F)		 18°C
(65°F)		 13°C
(56°F)
Daily mean 8°C
(47°F)		 9°C
(49°F)		 11°C
(52°F)		 14°C
(58°F)		 18°C
(65°F)		 23°C
(74°F)		 27°C
(80°F)		 26°C
(79°F)		 23°C
(73°F)		 17°C
(63°F)		 11°C
(53°F)		 8°C
(47°F)
Average low 4°C
(40°F)		 4°C
(39°F)		 5°C
(42°F)		 8°C
(47°F)		 11°C
(52°F)		 16°C
(60°F)		 18°C
(65°F)		 18°C
(64°F)		 15°C
(59°F)		 10°C
(50°F)		 6°C
(43°F)		 4°C
(39°F)
Mean minimum -1°C
(30°F)		 -3°C
(28°F)		 -1°C
(31°F)		 2°C
(36°F)		 6°C
(42°F)		 9°C
(49°F)		 14°C
(58°F)		 13°C
(56°F)		 9°C
(49°F)		 3°C
(39°F)		 -0°C
(32°F)		 -1°C
(31°F)
Minimum -2°C
(28°F)		 -4°C
(25°F)		 -2°C
(28°F)		 -0°C
(32°F)		 3°C
(38°F)		 7°C
(45°F)		 12°C
(55°F)		 12°C
(54°F)		 7°C
(45°F)		 2°C
(37°F)		 -2°C
(29°F)		 -2°C
(29°F)

Compare climate in Cool with other places

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

Monthly average precipitation in Cool, California, United States §

Cool usually has the most precipitation in January, February and March, with an average of 11 rainy days and 232 mm (9.1 inches) of precipitation per month.The driest months in Cool 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 Cool, 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) 227 (8.9) 230 (9.1) 237 (9.3) 112 (4.4) 62 (2.4) 8 (0.3) 0 (0.0) 0 (0.0) 17 (0.7) 67 (2.7) 131 (5.1) 178 (7.0)
Average precipitation days (≥ 1 mm) 11 10 14 7 5 1 0 0 2 3 7 10

Monthly sunshine hours in Cool, California, United States §

The sunniest months in Cool are June, July and August, when the sun shines an average of 12 hours 26 minutes a day.Least sunny months in Cool: 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 Cool, 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 46m 10h 45m 11h 59m 13h 14m 14h 18m 14h 50m 14h 32m 13h 35m 12h 22m 11h 7m 10h 1m 9h 28m

Solar UV radiation in Cool, California, United States §

Cool 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 Cool UV Index data.

Average daily maximum UV levels by month for Cool, 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