Pool swim season in Carson, NV
When can you swim in an outdoor pool in Carson, NV?
An unheated pool in Carson never reaches 78°F in a normal year. It peaks around 75°F in Aug. The air allows up to 5 swimmable months with a heater (May to Sep).
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What each heater buys you in Carson
| Option | Months | Swimmable | Energy/yr | All-in/yr |
|---|---|---|---|---|
| No heater | 0 | no month | $0 | $0 |
| Solar cover only | 2 | Jul to Aug | $0 | $50 |
| Solar panels + cover | 4 | Jun to Sep | $0 | $283 |
| Heat pump + cover | 5 | May to Sep | $247 | $797 |
| Gas heater + cover | 5 | May to Sep | $454 | $879 |
For a 450 sq ft pool held at 80°F, at NV prices of 13.4¢/kWh electricity and $13/Mcf gas. All-in spreads the purchase over the equipment's life.
The cheapest way to the full season in Carson
Solar panels + cover: 4 of 5 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 a heat pump sized to your pool's surface area; here it beats gas all-in (heat pump or gas).
Weather station: Carson City, 2.2 mi away (NOAA 1991–2020 normals). Water temperature is estimated from air and sunshine, not measured.
Carson month by month: air, sun and pool water
| Month | Air high | Air avg | Sun kWh/m²/day | Water, unheated | Water, covered | Heat pump $ | Gas $ |
|---|---|---|---|---|---|---|---|
| Jan | 46° | 35° | 2.4 | 34° | 40° | – | – |
| Feb | 50° | 38° | 3.4 | 37° | 43° | – | – |
| Mar | 56° | 44° | 4.8 | 43° | 49° | – | – |
| Apr | 62° | 49° | 6.3 | 50° | 56° | – | – |
| May | 70° | 57° | 7.3 | 57° | 63° | $148 | $259 |
| Jun | 81° | 65° | 8.3 | 66° | 72° | $61 | $121 |
| Jul | 90° | 72° | 8.0 | 74° | 80° | $3 | $7 |
| Aug | 88° | 70° | 7.3 | 75° | 81° | – | – |
| Sep | 81° | 63° | 5.9 | 70° | 76° | $35 | $67 |
| Oct | 68° | 52° | 4.3 | 59° | 65° | – | – |
| Nov | 55° | 41° | 2.8 | 47° | 53° | – | – |
| Dec | 45° | 34° | 2.0 | 37° | 43° | – | – |
Heating costs most in May (about $148 with a heat pump, $259 with gas). Sunshine peaks in Jun at 8.3 kWh/m²/day (NASA satellite data, 44.1 km grid cell). Highlighted months are swimmable with no heater.
How Carson compares with nearby cities
Carson ranks 9 of 10 Nevada cities for unheated swim months; Reno, Fernley, Placerville nearby get a longer season without a heater.
| City | Distance | Unheated months | Heat pump months | Heat pump $/yr |
|---|---|---|---|---|
| South Lake Tahoe, CA | 20 mi | 0 | 4 | $1,061 |
| Truckee, CA | 28 mi | 0 | 4 | $972 |
| Reno, NV | 28 mi | 1 | 5 | $167 |
| Sparks, NV | 29 mi | 0 | 6 | $314 |
| Fernley, NV | 41 mi | 2 | 6 | $185 |
| Placerville, CA | 64 mi | 2 | 6 | $368 |