Pool swim season in Red Wing, MN

Swim season in Red Wing without a heater, and with one

An unheated pool in Red Wing never reaches 78°F in a normal year. It peaks around 74°F in Jul. 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 Red Wing pool, side by side

For a 450 sq ft pool held at 80°F, at MN prices of 16.4¢/kWh electricity and $11/Mcf gas. All-in spreads the purchase over the equipment's life.

The cheapest way to the full season in Red Wing

Solar panels + cover: 4 of 4 possible months for about $283 a year all-in, which works out near $71 for each month it adds.

Before you pay for any heater, buy a solar cover: on its own it adds 2 months here for about $50 a year (why a cover comes first). 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: Red Wing Dam 3, 2 mi away (NOAA 1991–2020 normals). Water temperature is estimated from air and sunshine, not measured.

Red Wing month by month: air, sun and pool water

Heating costs most in Jun (about $71 with a heat pump, $99 with gas). Sunshine peaks in Jul at 6.3 kWh/m²/day (NASA satellite data, 12.3 km grid cell). Highlighted months are swimmable with no heater.

How Red Wing compares with nearby cities

Red Wing ranks 49 of 103 Minnesota cities for unheated swim months, and no nearby city gets a longer unheated season.