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Monthly climate in Fountain Hills, Arizona, United States

Last updated: March 2, 2024

Under the Köppen–Geiger climate classification Fountain Hills features a hot semi-arid climate (BSh). Temperatures typically range between 12 °C (53 °F) and 34 °C (94 °F) through the year, but rarely can drop to -2 °C (29 °F) or can rise to as high as 47 °C (117 °F). The average annual precipitation amounts to about 288 mm (11.3 inches) and receives 31 rainy days on the 1 mm (0.04 inches) threshold annually. Fountain Hills enjoys an average of 3634 hours of sunshine throughout the year, and daylight varies from 9 hours 56 minutes to 14 hours 20 minutes per day.

Monthly average temperatures in Fountain Hills, Arizona, United States §

The warmest months in Fountain Hills 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 13 °C (53 - 56 °F) throughout the day. On average each year, Fountain Hills experiences 213 days above 25 °C (77.0 °F) and 0 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Fountain Hills, 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
(82°F)		 28°C
(83°F)		 34°C
(94°F)		 39°C
(102°F)		 42°C
(108°F)		 47°C
(117°F)		 47°C
(116°F)		 46°C
(115°F)		 44°C
(112°F)		 40°C
(104°F)		 36°C
(96°F)		 28°C
(82°F)
Mean maximum 24°C
(75°F)		 26°C
(79°F)		 31°C
(88°F)		 36°C
(98°F)		 39°C
(103°F)		 43°C
(109°F)		 45°C
(114°F)		 44°C
(112°F)		 42°C
(109°F)		 36°C
(98°F)		 31°C
(88°F)		 25°C
(77°F)
Average high 19°C
(66°F)		 20°C
(68°F)		 24°C
(76°F)		 30°C
(86°F)		 34°C
(93°F)		 40°C
(104°F)		 40°C
(104°F)		 39°C
(103°F)		 37°C
(99°F)		 31°C
(87°F)		 26°C
(78°F)		 19°C
(66°F)
Daily mean 12°C
(53°F)		 13°C
(56°F)		 17°C
(63°F)		 23°C
(74°F)		 27°C
(81°F)		 33°C
(92°F)		 34°C
(94°F)		 34°C
(93°F)		 31°C
(88°F)		 24°C
(75°F)		 18°C
(65°F)		 12°C
(54°F)
Average low 6°C
(43°F)		 7°C
(45°F)		 10°C
(51°F)		 15°C
(59°F)		 19°C
(66°F)		 25°C
(77°F)		 29°C
(84°F)		 28°C
(83°F)		 24°C
(76°F)		 16°C
(62°F)		 11°C
(52°F)		 6°C
(44°F)
Mean minimum 1°C
(33°F)		 1°C
(35°F)		 4°C
(40°F)		 9°C
(49°F)		 13°C
(56°F)		 19°C
(67°F)		 23°C
(74°F)		 24°C
(75°F)		 18°C
(65°F)		 10°C
(50°F)		 6°C
(44°F)		 0°C
(33°F)
Minimum -2°C
(29°F)		 0°C
(33°F)		 3°C
(38°F)		 7°C
(44°F)		 12°C
(54°F)		 17°C
(64°F)		 23°C
(73°F)		 22°C
(71°F)		 12°C
(54°F)		 6°C
(43°F)		 5°C
(41°F)		 -1°C
(31°F)

Compare climate in Fountain Hills with other places

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

Monthly average precipitation in Fountain Hills, Arizona, United States §

Fountain Hills usually has the most precipitation in February, July and August, with an average of 4 rainy days and 38 mm (1.5 inches) of precipitation per month. The driest months in Fountain Hills are April, May and June. On average, 2 mm (0.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Fountain Hills, 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) 33 (1.3) 44 (1.7) 31 (1.2) 2 (0.1) 2 (0.1) 2 (0.1) 38 (1.5) 33 (1.3) 28 (1.1) 25 (1.0) 23 (0.9) 27 (1.0)
Average precipitation days (≥ 1 mm) 4 4 3 0 0 0 6 4 3 2 1 4

Monthly sunshine hours in Fountain Hills, Arizona, United States §

The sunniest months in Fountain Hills are May, June and July, when the sun shines an average of 12 hours 1 minutes a day. Least sunny months in Fountain Hills: January, February and December receive an average of 7 hours 23 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Fountain Hills, 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 193 239 307 331 373 374 359 343 315 298 259 239
Mean daily daylight hours 10h 11m 10h 59m 11h 59m 13h 2m 13h 54m 14h 20m 14h 5m 13h 19m 12h 19m 11h 17m 10h 23m 9h 56m

Solar UV radiation in Fountain Hills, Arizona, United States §

Fountain Hills experiences the highest level of ultraviolet (UV) radiation in May, 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 Fountain Hills UV Index data.

Average daily maximum UV levels by month for Fountain Hills, 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 10 11 12 11 11 10 8 5 4

Detailed Monthly Weather Insights for Fountain Hills, Arizona, United States

Discover in-depth weather details for every month in Fountain Hills. Click through the links below for comprehensive overviews of temperature trends, precipitation levels, sunshine hours, and solar UV radiation specifics. Whether planning a visit or simply curious about Fountain Hills's climate nuances, these monthly breakdowns provide the information you need for an informed understanding of what to expect throughout the year.

Each link leads to a detailed account of the typical weather conditions for that month, providing both locals and tourists with vital information to plan their daily activities, wardrobe, and travel itineraries accordingly.