Pool swim season in River Falls, WI

When can you swim in an outdoor pool in River Falls, WI?

An unheated pool in River Falls never reaches 78°F in a normal year. It peaks around 71°F in Aug. The air allows up to 4 swimmable months with a heater (Jun to Sep).

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 River Falls pool, side by side

For a 450 sq ft pool held at 80°F, at WI prices of 19.1¢/kWh electricity and $11/Mcf gas. All-in spreads the purchase over the equipment's life.

The cheapest way to the full season in River Falls

Solar panels + cover: 3 of 4 possible months for about $283 a year all-in, which works out near $94 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 gas as well as a heat pump: once the purchase price is counted, gas comes out cheaper all-in here (heat pump or gas).

Weather station: River Falls, 0.8 mi away (NOAA 1991–2020 normals). Water temperature is estimated from air and sunshine, not measured.

River Falls month by month: air, sun and pool water

Heating costs most in Jun (about $115 with a heat pump, $131 with gas). Sunshine peaks in Jul at 6.3 kWh/m²/day (NASA satellite data, 41.3 km grid cell). Highlighted months are swimmable with no heater.

How River Falls compares with nearby cities

River Falls ranks 87 of 98 Wisconsin cities for unheated swim months, and no nearby city gets a longer unheated season.