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Monthly climate in Santa Rosa, Arizona, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Santa Rosa features a hot desert climate (BWh).Temperatures typically range between 13 °C (55 °F) and 33 °C (91 °F) through the year, but rarely can drop to -1 °C (30 °F) or can rise to as high as 46 °C (116 °F).The average annual precipitation amounts to about 164 mm (6.5 inches) and receives 28 rainy days on the 1 mm (0.04 inches) threshold annually.Santa Rosa enjoys an average of 3657 hours of sunshine throughout the year, and daylight varies from 10 hours 3 minutes to 14 hours 13 minutes per day.

Monthly average temperatures in Santa Rosa, Arizona, United States §

The warmest months in Santa Rosa are June, July and August, with daily mean temperatures ranging from 32 to 33 °C (89 - 91 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 13 to 14 °C (55 - 58 °F) throughout the day. On average each year, Santa Rosa experiences 218 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 Santa Rosa, Arizona, 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
(83°F)		 30°C
(87°F)		 34°C
(93°F)		 38°C
(101°F)		 40°C
(105°F)		 46°C
(116°F)		 46°C
(114°F)		 44°C
(111°F)		 44°C
(111°F)		 39°C
(103°F)		 35°C
(95°F)		 28°C
(82°F)
Mean maximum 25°C
(78°F)		 27°C
(81°F)		 31°C
(88°F)		 36°C
(97°F)		 38°C
(101°F)		 42°C
(108°F)		 44°C
(111°F)		 43°C
(109°F)		 41°C
(106°F)		 36°C
(97°F)		 31°C
(89°F)		 26°C
(78°F)
Average high 19°C
(67°F)		 21°C
(69°F)		 24°C
(76°F)		 30°C
(86°F)		 33°C
(91°F)		 39°C
(102°F)		 39°C
(102°F)		 39°C
(102°F)		 36°C
(97°F)		 31°C
(88°F)		 26°C
(79°F)		 19°C
(67°F)
Daily mean 13°C
(55°F)		 14°C
(58°F)		 18°C
(64°F)		 23°C
(73°F)		 26°C
(79°F)		 32°C
(89°F)		 33°C
(91°F)		 33°C
(91°F)		 30°C
(86°F)		 24°C
(76°F)		 19°C
(66°F)		 13°C
(56°F)
Average low 7°C
(45°F)		 8°C
(46°F)		 11°C
(52°F)		 15°C
(59°F)		 18°C
(64°F)		 23°C
(74°F)		 27°C
(81°F)		 27°C
(81°F)		 24°C
(75°F)		 17°C
(63°F)		 12°C
(54°F)		 8°C
(46°F)
Mean minimum 1°C
(34°F)		 1°C
(34°F)		 5°C
(41°F)		 9°C
(49°F)		 12°C
(54°F)		 18°C
(65°F)		 22°C
(71°F)		 23°C
(75°F)		 18°C
(64°F)		 9°C
(48°F)		 7°C
(44°F)		 1°C
(34°F)
Minimum -0°C
(31°F)		 -1°C
(30°F)		 3°C
(37°F)		 8°C
(46°F)		 10°C
(49°F)		 18°C
(64°F)		 20°C
(69°F)		 22°C
(72°F)		 13°C
(56°F)		 4°C
(39°F)		 3°C
(38°F)		 -1°C
(31°F)

Compare climate in Santa Rosa with other places

Compare temperature, precipitation, sunshine, UV index in Santa Rosa, Arizona, United States with other places around the world.

Monthly average precipitation in Santa Rosa, Arizona, United States §

Santa Rosa usually has the most precipitation in January, July and August, with an average of 5 rainy days and 25 mm (1.0 inches) of precipitation per month.The driest months in Santa Rosa are April, May and October. On average, 3 mm (0.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Santa Rosa, Arizona, 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) 18 (0.7) 18 (0.7) 13 (0.5) 2 (0.1) 1 (0.0) 7 (0.3) 34 (1.3) 24 (0.9) 15 (0.6) 7 (0.3) 8 (0.3) 18 (0.7)
Average precipitation days (≥ 1 mm) 2 3 2 0 0 0 8 6 2 1 1 3

Monthly sunshine hours in Santa Rosa, Arizona, United States §

The sunniest months in Santa Rosa are May, June and July, when the sun shines an average of 11 hours 57 minutes a day.Least sunny months in Santa Rosa: January, February and December receive an average of 7 hours 37 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Santa Rosa, Arizona, 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 204 245 307 333 372 372 355 346 316 299 260 244
Mean daily daylight hours 10h 17m 11h 2m 12h 0m 12h 59m 13h 49m 14h 13m 13h 59m 13h 15m 12h 18m 11h 19m 10h 28m 10h 3m

Solar UV radiation in Santa Rosa, Arizona, United States §

Santa Rosa experiences the highest level of ultraviolet (UV) radiation in May, June and July, when the maximum UV index can reach values of 12 - 12, which corresponds to the Extreme category of sun exposure.January, November and December are in the Moderate / High exposure category. In these months, the maximum values of the UV index do not exceed 6. For more detailed information, check out our hourly Santa Rosa UV Index data.

Average daily maximum UV levels by month for Santa Rosa, Arizona, 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) 5 7 9 11 12 12 12 11 10 8 6 4