Pool swim season in Fountain Hills, AZ

Fountain Hills, AZ: how long the pool season really is

An unheated pool in Fountain Hills reaches 78°F in May to Oct, about 6 months a year. The air allows up to 9 swimmable months with a heater (Mar to Nov).

1. J
2. F
3. M
4. A
5. M
6. J
7. J
8. A
9. S
10. O
11. N
12. D

Heater options for a Fountain Hills pool, side by side

For a 450 sq ft pool held at 80°F, at AZ prices of 15.4¢/kWh electricity and $19/Mcf gas. All-in spreads the purchase over the equipment's life.

The cheapest way to the full season in Fountain Hills

Solar panels + cover: 8 of 9 possible months for about $283 a year all-in, which works out near $142 for each month it adds.

A solar cover alone adds no swim months here, so if you want a longer season you need a heater (why); still use one at night to hold the heat you pay for. If you get quotes, ask for a heat pump sized to your pool's surface area; here it beats gas all-in (heat pump or gas).

Weather station: Fountain Hills, 1.6 mi away (NOAA 1991–2020 normals). Water temperature is estimated from air and sunshine, not measured.

Fountain Hills month by month: air, sun and pool water

Heating costs most in Mar (about $107 with a heat pump, $250 with gas). Sunshine peaks in Jun at 8.5 kWh/m²/day (NASA satellite data, 25.1 km grid cell). Highlighted months are swimmable with no heater.

How Fountain Hills compares with nearby cities

Fountain Hills ranks 16 of 44 Arizona cities for unheated swim months, and no nearby city gets a longer unheated season.