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Monthly climate in Colusa, California, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Colusa features a hot-summer Mediterranean climate (Csa).Temperatures typically range between 10 °C (51 °F) and 30 °C (87 °F) through the year, but rarely can drop to -3 °C (27 °F) or can rise to as high as 47 °C (116 °F).The average annual precipitation amounts to about 448 mm (17.6 inches) and receives 43 rainy days on the 1 mm (0.04 inches) threshold annually.Colusa enjoys an average of 3403 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 Colusa, California, United States §

The warmest months in Colusa are June, July and August, with daily mean temperatures ranging from 28 to 30 °C (83 - 87 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 10 to 13 °C (51 - 55 °F) throughout the day. On average each year, Colusa experiences 180 days above 25 °C (77.0 °F) and 2 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Colusa, 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 27°C
(80°F)		 30°C
(87°F)		 33°C
(91°F)		 36°C
(97°F)		 42°C
(109°F)		 46°C
(115°F)		 47°C
(116°F)		 46°C
(115°F)		 46°C
(115°F)		 39°C
(103°F)		 30°C
(87°F)		 25°C
(76°F)
Mean maximum 22°C
(71°F)		 26°C
(78°F)		 29°C
(85°F)		 34°C
(93°F)		 39°C
(103°F)		 43°C
(109°F)		 45°C
(113°F)		 44°C
(112°F)		 43°C
(109°F)		 35°C
(95°F)		 27°C
(82°F)		 22°C
(71°F)
Average high 16°C
(61°F)		 19°C
(67°F)		 21°C
(70°F)		 26°C
(79°F)		 31°C
(88°F)		 37°C
(98°F)		 40°C
(104°F)		 39°C
(102°F)		 35°C
(95°F)		 28°C
(83°F)		 21°C
(70°F)		 16°C
(61°F)
Daily mean 11°C
(51°F)		 13°C
(55°F)		 14°C
(58°F)		 19°C
(66°F)		 23°C
(74°F)		 28°C
(83°F)		 30°C
(87°F)		 29°C
(85°F)		 26°C
(79°F)		 20°C
(69°F)		 14°C
(58°F)		 10°C
(51°F)
Average low 7°C
(44°F)		 7°C
(45°F)		 9°C
(48°F)		 12°C
(54°F)		 16°C
(61°F)		 20°C
(69°F)		 21°C
(70°F)		 20°C
(69°F)		 18°C
(64°F)		 13°C
(56°F)		 9°C
(48°F)		 6°C
(43°F)
Mean minimum -0°C
(32°F)		 0°C
(32°F)		 2°C
(37°F)		 6°C
(43°F)		 10°C
(51°F)		 14°C
(58°F)		 17°C
(62°F)		 15°C
(60°F)		 11°C
(51°F)		 6°C
(44°F)		 2°C
(36°F)		 1°C
(34°F)
Minimum -2°C
(29°F)		 -3°C
(27°F)		 1°C
(35°F)		 4°C
(40°F)		 6°C
(43°F)		 13°C
(55°F)		 16°C
(61°F)		 14°C
(58°F)		 7°C
(44°F)		 4°C
(40°F)		 -0°C
(31°F)		 -3°C
(27°F)

Compare climate in Colusa with other places

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

Monthly average precipitation in Colusa, California, United States §

Colusa usually has the most precipitation in January, February and December, with an average of 7 rainy days and 87 mm (3.4 inches) of precipitation per month.The driest months in Colusa are July, August and September. On average, 0 mm (0.0 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Colusa, 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) 95 (3.8) 91 (3.6) 71 (2.8) 27 (1.1) 23 (0.9) 3 (0.1) 0 (0.0) 0 (0.0) 1 (0.0) 25 (1.0) 38 (1.5) 73 (2.9)
Average precipitation days (≥ 1 mm) 8 6 9 5 2 0 0 0 0 2 4 7

Monthly sunshine hours in Colusa, California, United States §

The sunniest months in Colusa are May, June and July, when the sun shines an average of 12 hours 30 minutes a day.Least sunny months in Colusa: January, February and December receive an average of 5 hours 49 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Colusa, 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 138 205 252 297 363 388 399 358 317 281 214 185
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 Colusa, California, United States §

Colusa experiences the highest level of ultraviolet (UV) radiation in May, June 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, February 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 Colusa UV Index data.

Average daily maximum UV levels by month for Colusa, 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 4 7 8 10 11 10 10 9 6 4 3