Fountain Hills (AZ) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Fountain Hills.
Climate overview of Fountain Hills
Fountain Hills, Arizona, United States of America, sees big temperature differences between seasons, with July peaking at 40°C (104°F) and December dropping to 18°C (64°F).
Rainfall is extremely rare, with only 225 mm (8.9 in) falling across the entire year. The sunniest month is June, with 13.6 hours of sunshine per day on average.
Fountain Hills Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Fountain Hills - and find the best time to visit.
Monthly Temperature in Fountain Hills
Visitors to Fountain Hills can expect significant temperature changes throughout the year. Average maximum daytime temperatures range from a very hot 40°C (104°F) in July, the warmest time of the year, to a moderate 18°C (64°F) during cooler months like December.
At night, you can expect temperatures ranging from 27°C (81°F) in July to around 6°C (43°F) during December.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Fountain Hills
Fountain Hills experiences desert-like conditions in terms of precipitation with almost no rainfall, generally receiving 225 mm (8.9 in) annually. Significant seasonal changes in precipitation occur throughout the year. In the wettest month, December it receives moderate rainfall, averaging 36 mm (1.4 in) of precipitation, recorded across 5 rainy days. In contrast, the driest month June brings less rainfall, with 1.5 mm (0.1 in) over 0 rainy days. For more details, please visit our Fountain Hills Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Fountain Hills
Seasonal changes in sunshine hours are quite dramatic in Fountain Hills. While June receives considerable daily sunshine with up to 13.6 hours, December marks the darkest time of the year, where sunshine is scarce with only 8.0 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Best Time to Visit Fountain Hills
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: February, March, April and November
- Warmest weather: June, July and August
- Most sunshine: May and June
- Fewer rainy days: March, April, May, June and November
- Seasonal pattern: Very little rainfall year-round, with very hot summers and mild winters
Frequently asked questions about the climate in Fountain Hills
What is the best time to visit Fountain Hills?
February, March, April and November typically offer the most optimal weather in Fountain Hills. In contrast, June, July, August and September tend to have less optimal conditions. Fountain Hills has very little rainfall year-round, with very hot summers and mild winters.
What temperatures can I expect in Fountain Hills?
Daytime highs range from 18°C (64°F) in December to 40°C (104°F) in July. Nighttime lows range from 6°C (43°F) to 27°C (81°F). Temperatures vary considerably through the year.
How much rain does Fountain Hills get?
Annual rainfall is around 225 mm (8.9 in). December is the wettest month with 36 mm (1.4 in), while June is the driest with 1.5 mm (0.1 in).
How sunny is Fountain Hills?
Fountain Hills receives around 3,852 hours of sunshine per year. June is the sunniest month with 407 hours, while December is the cloudiest with just 241 hours. Overall, Fountain Hills enjoys abundant sunshine.
Fountain Hills 3-Day Forecast
Fountain Hills (AZ) 3-Day Forecast
Fountain Hills on the map
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