Pool swim season in Elk Grove, CA
When can you swim in an outdoor pool in Elk Grove, CA?
An unheated pool in Elk Grove reaches 78°F in Jul to Aug, about 2 months a year. The air allows up to 7 swimmable months with a heater (Apr to Oct).
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What each heater buys you in Elk Grove
| Option | Months | Swimmable | Energy/yr | All-in/yr |
|---|---|---|---|---|
| No heater | 2 | Jul to Aug | $0 | $0 |
| Solar cover only | 4 | Jun to Sep | $0 | $50 |
| Solar panels + cover | 6 | May to Oct | $0 | $283 |
| Heat pump + cover | 7 | Apr to Oct | $477 | $1,027 |
| Gas heater + cover | 7 | Apr to Oct | $622 | $1,047 |
For a 450 sq ft pool held at 80°F, at CA prices of 32.6¢/kWh electricity and $22/Mcf gas. All-in spreads the purchase over the equipment's life.
The cheapest way to the full season in Elk Grove
Solar panels + cover: 6 of 7 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: Sacramento Airport, 8.8 mi away (NOAA 1991–2020 normals). Water temperature is estimated from air and sunshine, not measured.
Elk Grove 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 | 56° | 48° | 2.2 | 47° | 53° | – | – |
| Feb | 61° | 51° | 3.3 | 50° | 56° | – | – |
| Mar | 66° | 55° | 4.6 | 55° | 61° | – | – |
| Apr | 72° | 60° | 6.2 | 61° | 67° | $272 | $342 |
| May | 80° | 66° | 7.5 | 67° | 73° | $125 | $172 |
| Jun | 88° | 72° | 8.3 | 74° | 80° | – | – |
| Jul | 93° | 76° | 8.2 | 79° | 85° | – | – |
| Aug | 92° | 75° | 7.4 | 80° | 86° | – | – |
| Sep | 89° | 73° | 6.0 | 77° | 83° | – | – |
| Oct | 79° | 65° | 4.3 | 70° | 76° | $80 | $108 |
| Nov | 65° | 54° | 2.8 | 59° | 65° | – | – |
| Dec | 56° | 47° | 2.0 | 50° | 56° | – | – |
Heating costs most in Apr (about $272 with a heat pump, $342 with gas). Sunshine peaks in Jun at 8.3 kWh/m²/day (NASA satellite data, 13.8 km grid cell). Highlighted months are swimmable with no heater.
How Elk Grove compares with nearby cities
Elk Grove ranks 155 of 376 California cities for unheated swim months; Sacramento, Rancho Cordova, Citrus Heights nearby get a longer season without a heater.
| City | Distance | Unheated months | Heat pump months | Heat pump $/yr |
|---|---|---|---|---|
| Galt, CA | 11 mi | 2 | 7 | $426 |
| Sacramento, CA | 11 mi | 3 | 7 | $369 |
| West Sacramento, CA | 13 mi | 2 | 7 | $477 |
| Rancho Cordova, CA | 14 mi | 3 | 7 | $369 |
| Citrus Heights, CA | 20 mi | 3 | 7 | $369 |
| Lodi, CA | 21 mi | 2 | 7 | $426 |