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Monthly climate in Arcadia, California, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Arcadia features a warm-summer Mediterranean climate (Csb).Temperatures typically range between 11 °C (51 °F) and 25 °C (77 °F) through the year, but rarely can drop to -1 °C (30 °F) or can rise to as high as 43 °C (109 °F).The average annual precipitation amounts to about 409 mm (16.1 inches) and receives 40 rainy days on the 1 mm (0.04 inches) threshold annually.Arcadia enjoys an average of 3587 hours of sunshine throughout the year, and daylight varies from 9 hours 54 minutes to 14 hours 22 minutes per day.

Monthly average temperatures in Arcadia, California, United States §

The warmest months in Arcadia are July, August and September, with daily mean temperatures ranging from 23 to 25 °C (73 - 77 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 11 to 11 °C (51 - 52 °F) throughout the day. On average each year, Arcadia experiences 134 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 Arcadia, 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 28°C
(82°F)		 27°C
(80°F)		 29°C
(84°F)		 33°C
(91°F)		 33°C
(91°F)		 39°C
(102°F)		 41°C
(107°F)		 39°C
(102°F)		 43°C
(109°F)		 37°C
(98°F)		 30°C
(86°F)		 25°C
(78°F)
Mean maximum 23°C
(73°F)		 23°C
(74°F)		 26°C
(79°F)		 30°C
(87°F)		 30°C
(87°F)		 34°C
(93°F)		 37°C
(99°F)		 37°C
(98°F)		 37°C
(100°F)		 33°C
(91°F)		 29°C
(85°F)		 23°C
(74°F)
Average high 16°C
(61°F)		 16°C
(62°F)		 18°C
(64°F)		 22°C
(71°F)		 23°C
(74°F)		 28°C
(83°F)		 32°C
(89°F)		 32°C
(90°F)		 30°C
(85°F)		 26°C
(78°F)		 21°C
(71°F)		 16°C
(61°F)
Daily mean 11°C
(51°F)		 11°C
(52°F)		 12°C
(54°F)		 15°C
(60°F)		 17°C
(63°F)		 21°C
(71°F)		 25°C
(77°F)		 25°C
(77°F)		 23°C
(73°F)		 19°C
(66°F)		 15°C
(59°F)		 11°C
(51°F)
Average low 6°C
(44°F)		 6°C
(43°F)		 7°C
(45°F)		 10°C
(50°F)		 12°C
(53°F)		 16°C
(60°F)		 19°C
(66°F)		 19°C
(67°F)		 17°C
(63°F)		 13°C
(56°F)		 10°C
(50°F)		 6°C
(44°F)
Mean minimum 1°C
(34°F)		 0°C
(33°F)		 1°C
(35°F)		 5°C
(41°F)		 6°C
(44°F)		 10°C
(51°F)		 15°C
(59°F)		 15°C
(59°F)		 12°C
(53°F)		 8°C
(46°F)		 5°C
(41°F)		 1°C
(34°F)
Minimum -1°C
(30°F)		 -1°C
(30°F)		 -1°C
(31°F)		 4°C
(40°F)		 4°C
(40°F)		 9°C
(49°F)		 12°C
(54°F)		 14°C
(58°F)		 9°C
(49°F)		 5°C
(42°F)		 1°C
(34°F)		 -0°C
(32°F)

Compare climate in Arcadia with other places

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

Monthly average precipitation in Arcadia, California, United States §

Arcadia usually has the most precipitation in January, March and December, with an average of 6 rainy days and 80 mm (3.1 inches) of precipitation per month.The driest months in Arcadia are June, July and September. On average, 5 mm (0.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Arcadia, 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) 78 (3.1) 69 (2.7) 84 (3.3) 24 (1.0) 19 (0.7) 3 (0.1) 5 (0.2) 8 (0.3) 6 (0.2) 10 (0.4) 25 (1.0) 77 (3.0)
Average precipitation days (≥ 1 mm) 5 6 10 3 3 1 1 1 2 1 2 5

Monthly sunshine hours in Arcadia, California, United States §

The sunniest months in Arcadia are June, July and August, when the sun shines an average of 12 hours 8 minutes a day.Least sunny months in Arcadia: January, February and December receive an average of 7 hours 2 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Arcadia, 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 185 231 280 320 359 373 382 361 318 294 255 224
Mean daily daylight hours 10h 9m 10h 57m 11h 59m 13h 3m 13h 56m 14h 22m 14h 8m 13h 21m 12h 20m 11h 16m 10h 21m 9h 54m

Solar UV radiation in Arcadia, California, United States §

Arcadia experiences the highest level of ultraviolet (UV) radiation in June, July and August, 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 Arcadia UV Index data.

Average daily maximum UV levels by month for Arcadia, 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 10 11 12 12 11 10 7 5 4