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Monthly climate in Superior, Arizona, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Superior features a hot semi-arid climate (BSh).Temperatures typically range between 9 °C (49 °F) and 30 °C (86 °F) through the year, but rarely can drop to -8 °C (17 °F) or can rise to as high as 43 °C (110 °F).The average annual precipitation amounts to about 475 mm (18.7 inches) and receives 60 rainy days on the 1 mm (0.04 inches) threshold annually.Superior enjoys an average of 3609 hours of sunshine throughout the year, and daylight varies from 9 hours 58 minutes to 14 hours 18 minutes per day.

Monthly average temperatures in Superior, Arizona, United States §

The warmest months in Superior are June, July and August, with daily mean temperatures ranging from 29 to 30 °C (85 - 86 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 9 to 10 °C (49 - 51 °F) throughout the day. On average each year, Superior experiences 177 days above 25 °C (77.0 °F) and 9 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Superior, 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 23°C
(74°F)		 25°C
(77°F)		 30°C
(87°F)		 35°C
(95°F)		 39°C
(102°F)		 43°C
(110°F)		 42°C
(108°F)		 42°C
(107°F)		 39°C
(103°F)		 36°C
(97°F)		 30°C
(87°F)		 25°C
(77°F)
Mean maximum 21°C
(70°F)		 23°C
(74°F)		 28°C
(82°F)		 33°C
(91°F)		 35°C
(96°F)		 39°C
(102°F)		 41°C
(105°F)		 39°C
(103°F)		 38°C
(101°F)		 33°C
(92°F)		 28°C
(82°F)		 23°C
(73°F)
Average high 16°C
(61°F)		 17°C
(62°F)		 21°C
(69°F)		 26°C
(79°F)		 30°C
(86°F)		 36°C
(97°F)		 35°C
(96°F)		 35°C
(95°F)		 33°C
(91°F)		 27°C
(81°F)		 22°C
(73°F)		 16°C
(61°F)
Daily mean 9°C
(49°F)		 10°C
(51°F)		 14°C
(57°F)		 19°C
(67°F)		 23°C
(74°F)		 29°C
(85°F)		 30°C
(86°F)		 29°C
(85°F)		 27°C
(80°F)		 20°C
(69°F)		 15°C
(60°F)		 10°C
(50°F)
Average low 4°C
(39°F)		 4°C
(40°F)		 7°C
(45°F)		 12°C
(53°F)		 15°C
(60°F)		 21°C
(71°F)		 24°C
(76°F)		 23°C
(74°F)		 20°C
(69°F)		 14°C
(57°F)		 9°C
(48°F)		 4°C
(40°F)
Mean minimum -3°C
(27°F)		 -2°C
(28°F)		 1°C
(34°F)		 5°C
(42°F)		 9°C
(49°F)		 16°C
(61°F)		 20°C
(68°F)		 20°C
(67°F)		 15°C
(60°F)		 7°C
(44°F)		 4°C
(39°F)		 -2°C
(29°F)
Minimum -8°C
(17°F)		 -5°C
(23°F)		 -1°C
(31°F)		 4°C
(40°F)		 8°C
(46°F)		 14°C
(58°F)		 18°C
(66°F)		 18°C
(64°F)		 10°C
(50°F)		 2°C
(36°F)		 2°C
(35°F)		 -4°C
(25°F)

Compare climate in Superior with other places

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

Monthly average precipitation in Superior, Arizona, United States §

Superior usually has the most precipitation in January, February and July, with an average of 8 rainy days and 71 mm (2.8 inches) of precipitation per month.The driest months in Superior are April, May and June. On average, 6 mm (0.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Superior, 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) 59 (2.3) 66 (2.6) 41 (1.6) 4 (0.2) 8 (0.3) 5 (0.2) 89 (3.5) 57 (2.2) 44 (1.7) 29 (1.2) 29 (1.1) 45 (1.8)
Average precipitation days (≥ 1 mm) 6 6 5 1 2 1 13 10 5 4 2 5

Monthly sunshine hours in Superior, Arizona, United States §

The sunniest months in Superior are May, June and July, when the sun shines an average of 11 hours 54 minutes a day.Least sunny months in Superior: January, February and December receive an average of 7 hours 20 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Superior, 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 196 233 303 330 370 370 354 339 313 298 259 238
Mean daily daylight hours 10h 13m 10h 59m 11h 59m 13h 1m 13h 53m 14h 18m 14h 4m 13h 18m 12h 19m 11h 18m 10h 25m 9h 58m

Solar UV radiation in Superior, Arizona, United States §

Superior 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, February 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 Superior UV Index data.

Average daily maximum UV levels by month for Superior, 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) 4 6 9 11 12 12 12 11 10 8 6 4