nomadseason

Monthly climate in Casa Grande, Arizona, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Casa Grande features a hot desert climate (BWh).Temperatures typically range between 12 °C (55 °F) and 34 °C (94 °F) through the year, but rarely can drop to -1 °C (30 °F) or can rise to as high as 48 °C (119 °F).The average annual precipitation amounts to about 221 mm (8.7 inches) and receives 28 rainy days on the 1 mm (0.04 inches) threshold annually.Casa Grande enjoys an average of 3629 hours of sunshine throughout the year, and daylight varies from 9 hours 59 minutes to 14 hours 17 minutes per day.

Monthly average temperatures in Casa Grande, Arizona, United States §

The warmest months in Casa Grande are June, July and August, with daily mean temperatures ranging from 33 to 34 °C (92 - 94 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 12 to 14 °C (55 - 58 °F) throughout the day. On average each year, Casa Grande experiences 225 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 Casa Grande, 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)		 36°C
(96°F)		 39°C
(103°F)		 43°C
(109°F)		 48°C
(119°F)		 47°C
(116°F)		 46°C
(116°F)		 45°C
(113°F)		 40°C
(105°F)		 36°C
(97°F)		 28°C
(82°F)
Mean maximum 25°C
(77°F)		 28°C
(82°F)		 32°C
(91°F)		 37°C
(100°F)		 40°C
(105°F)		 44°C
(111°F)		 46°C
(115°F)		 45°C
(113°F)		 43°C
(110°F)		 37°C
(100°F)		 32°C
(90°F)		 26°C
(78°F)
Average high 20°C
(68°F)		 21°C
(71°F)		 26°C
(78°F)		 31°C
(88°F)		 35°C
(95°F)		 41°C
(105°F)		 41°C
(105°F)		 40°C
(105°F)		 38°C
(100°F)		 32°C
(90°F)		 26°C
(80°F)		 20°C
(67°F)
Daily mean 12°C
(55°F)		 14°C
(58°F)		 18°C
(65°F)		 24°C
(75°F)		 27°C
(81°F)		 33°C
(92°F)		 34°C
(94°F)		 34°C
(94°F)		 31°C
(88°F)		 24°C
(76°F)		 19°C
(66°F)		 13°C
(55°F)
Average low 7°C
(44°F)		 8°C
(46°F)		 11°C
(52°F)		 15°C
(59°F)		 19°C
(66°F)		 24°C
(75°F)		 28°C
(83°F)		 28°C
(82°F)		 24°C
(76°F)		 17°C
(63°F)		 12°C
(54°F)		 7°C
(45°F)
Mean minimum 1°C
(34°F)		 1°C
(34°F)		 5°C
(41°F)		 9°C
(49°F)		 13°C
(55°F)		 19°C
(66°F)		 22°C
(73°F)		 24°C
(75°F)		 18°C
(65°F)		 9°C
(49°F)		 7°C
(45°F)		 1°C
(34°F)
Minimum -1°C
(30°F)		 -1°C
(31°F)		 3°C
(37°F)		 7°C
(45°F)		 12°C
(54°F)		 17°C
(62°F)		 21°C
(70°F)		 23°C
(73°F)		 12°C
(55°F)		 5°C
(41°F)		 5°C
(41°F)		 -0°C
(32°F)

Compare climate in Casa Grande with other places

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

Monthly average precipitation in Casa Grande, Arizona, United States §

Casa Grande usually has the most precipitation in February, July and August, with an average of 4 rainy days and 34 mm (1.3 inches) of precipitation per month.The driest months in Casa Grande are April, May and June. On average, 3 mm (0.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Casa Grande, 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) 20 (0.8) 29 (1.1) 19 (0.7) 1 (0.1) 1 (0.1) 5 (0.2) 38 (1.5) 36 (1.4) 21 (0.8) 15 (0.6) 13 (0.5) 24 (0.9)
Average precipitation days (≥ 1 mm) 3 3 3 0 0 0 6 5 2 2 1 3

Monthly sunshine hours in Casa Grande, Arizona, United States §

The sunniest months in Casa Grande are May, June and July, when the sun shines an average of 11 hours 57 minutes a day.Least sunny months in Casa Grande: January, February and December receive an average of 7 hours 27 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Casa Grande, 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 197 239 306 330 371 371 356 342 314 298 259 240
Mean daily daylight hours 10h 14m 11h 0m 12h 0m 13h 1m 13h 52m 14h 17m 14h 3m 13h 18m 12h 19m 11h 18m 10h 25m 9h 59m

Solar UV radiation in Casa Grande, Arizona, United States §

Casa Grande experiences the highest level of ultraviolet (UV) radiation in April, June 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 Casa Grande UV Index data.

Average daily maximum UV levels by month for Casa Grande, 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 11 12 11 11 10 8 5 4