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Monthly climate in Tucson, Arizona, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Tucson features a hot semi-arid climate (BSh).Temperatures typically range between 11 °C (53 °F) and 31 °C (88 °F) through the year, but rarely can drop to -3 °C (27 °F) or can rise to as high as 44 °C (111 °F).The average annual precipitation amounts to about 251 mm (9.9 inches) and receives 39 rainy days on the 1 mm (0.04 inches) threshold annually.Tucson enjoys an average of 3632 hours of sunshine throughout the year, and daylight varies from 10 hours 3 minutes to 14 hours 12 minutes per day.

Monthly average temperatures in Tucson, Arizona, United States §

The warmest months in Tucson are June, July and August, with daily mean temperatures ranging from 31 to 31 °C (87 - 88 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 11 to 13 °C (53 - 55 °F) throughout the day. On average each year, Tucson experiences 203 days above 25 °C (77.0 °F) and 3 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Tucson, 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 25°C
(77°F)		 29°C
(84°F)		 33°C
(92°F)		 37°C
(98°F)		 40°C
(104°F)		 44°C
(111°F)		 43°C
(110°F)		 42°C
(108°F)		 41°C
(106°F)		 38°C
(100°F)		 33°C
(91°F)		 27°C
(80°F)
Mean maximum 24°C
(75°F)		 26°C
(79°F)		 30°C
(86°F)		 35°C
(95°F)		 37°C
(99°F)		 41°C
(105°F)		 41°C
(107°F)		 40°C
(105°F)		 39°C
(103°F)		 35°C
(95°F)		 30°C
(86°F)		 25°C
(77°F)
Average high 18°C
(65°F)		 19°C
(67°F)		 23°C
(74°F)		 28°C
(83°F)		 32°C
(90°F)		 37°C
(100°F)		 36°C
(98°F)		 36°C
(98°F)		 34°C
(94°F)		 29°C
(85°F)		 25°C
(76°F)		 18°C
(65°F)
Daily mean 11°C
(53°F)		 13°C
(55°F)		 16°C
(62°F)		 22°C
(71°F)		 25°C
(78°F)		 31°C
(88°F)		 31°C
(88°F)		 31°C
(87°F)		 28°C
(83°F)		 23°C
(73°F)		 17°C
(64°F)		 12°C
(54°F)
Average low 6°C
(42°F)		 6°C
(44°F)		 10°C
(50°F)		 14°C
(57°F)		 17°C
(63°F)		 23°C
(73°F)		 26°C
(78°F)		 25°C
(78°F)		 22°C
(73°F)		 16°C
(61°F)		 11°C
(52°F)		 6°C
(44°F)
Mean minimum -0°C
(31°F)		 -0°C
(32°F)		 3°C
(38°F)		 8°C
(47°F)		 11°C
(53°F)		 18°C
(65°F)		 21°C
(70°F)		 22°C
(72°F)		 17°C
(63°F)		 8°C
(47°F)		 6°C
(43°F)		 -0°C
(31°F)
Minimum -1°C
(30°F)		 -3°C
(27°F)		 1°C
(33°F)		 6°C
(43°F)		 9°C
(48°F)		 17°C
(62°F)		 20°C
(69°F)		 20°C
(69°F)		 13°C
(56°F)		 4°C
(39°F)		 2°C
(36°F)		 -2°C
(29°F)

Compare climate in Tucson with other places

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

Monthly average precipitation in Tucson, Arizona, United States §

Tucson usually has the most precipitation in February, July and August, with an average of 7 rainy days and 41 mm (1.6 inches) of precipitation per month.The driest months in Tucson are April, May and June. On average, 4 mm (0.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Tucson, 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) 23 (0.9) 34 (1.3) 15 (0.6) 2 (0.1) 3 (0.1) 8 (0.3) 54 (2.1) 35 (1.4) 27 (1.1) 10 (0.4) 14 (0.6) 27 (1.0)
Average precipitation days (≥ 1 mm) 3 4 3 0 1 0 10 8 3 2 1 4

Monthly sunshine hours in Tucson, Arizona, United States §

The sunniest months in Tucson are May, June and July, when the sun shines an average of 11 hours 54 minutes a day.Least sunny months in Tucson: January, February and December receive an average of 7 hours 33 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Tucson, 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 203 241 304 332 370 370 353 339 312 299 261 242
Mean daily daylight hours 10h 17m 11h 2m 12h 0m 12h 59m 13h 48m 14h 12m 13h 59m 13h 15m 12h 18m 11h 20m 10h 29m 10h 3m

Solar UV radiation in Tucson, Arizona, United States §

Tucson 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 Tucson UV Index data.

Average daily maximum UV levels by month for Tucson, 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 11 8 6 4