Pool swim season in Siloam Springs, AR

Swim season in Siloam Springs without a heater, and with one

An unheated pool in Siloam Springs reaches 78°F in Jul to Sep, about 3 months a year. The air allows up to 7 swimmable months with a heater (Apr to Oct).

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

What each heater buys you in Siloam Springs

For a 450 sq ft pool held at 80°F, at AR prices of 13.7¢/kWh electricity and $19/Mcf gas. All-in spreads the purchase over the equipment's life.

The cheapest way to the full season in Siloam Springs

Solar panels + cover: 6 of 7 possible months for about $283 a year all-in, which works out near $94 for each month it adds.

Before you pay for any heater, buy a solar cover: on its own it adds 1 month here for about $50 a year (why a cover comes first). 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: Kansas 2 NE, 13.9 mi away (NOAA 1991–2020 normals). Water temperature is estimated from air and sunshine, not measured.

Siloam Springs month by month: air, sun and pool water

Heating costs most in Apr (about $131 with a heat pump, $346 with gas). Sunshine peaks in Jun at 6.7 kWh/m²/day (NASA satellite data, 35.1 km grid cell). Highlighted months are swimmable with no heater.

How Siloam Springs compares with nearby cities

Siloam Springs ranks 26 of 39 Arkansas cities for unheated swim months, and no nearby city gets a longer unheated season.