Pool swim season in Radcliff, KY
Swim season in Radcliff without a heater, and with one
An unheated pool in Radcliff never reaches 78°F in a normal year. It peaks around 78°F in Aug. The air allows up to 5 swimmable months with a heater (May to Sep).
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Heater options for a Radcliff pool, side by side
| Option | Months | Swimmable | Energy/yr | All-in/yr |
|---|---|---|---|---|
| No heater | 0 | no month | $0 | $0 |
| Solar cover only | 3 | Jul to Sep | $0 | $50 |
| Solar panels + cover | 4 | Jun to Sep | $0 | $283 |
| Heat pump + cover | 5 | May to Sep | $117 | $667 |
| Gas heater + cover | 5 | May to Sep | $237 | $662 |
For a 450 sq ft pool held at 80°F, at KY prices of 14.2¢/kWh electricity and $14/Mcf gas. All-in spreads the purchase over the equipment's life.
The cheapest way to the full season in Radcliff
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 3 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: Elizabethtown Wp Cs, 10.2 mi away (NOAA 1991–2020 normals). Water temperature is estimated from air and sunshine, not measured.
Radcliff 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 | 42° | 33° | 2.0 | 34° | 40° | – | – |
| Feb | 47° | 37° | 2.7 | 35° | 41° | – | – |
| Mar | 56° | 45° | 3.8 | 42° | 48° | – | – |
| Apr | 67° | 56° | 5.1 | 53° | 59° | – | – |
| May | 75° | 65° | 5.7 | 63° | 69° | $94 | $187 |
| Jun | 83° | 73° | 6.3 | 72° | 78° | $16 | $35 |
| Jul | 86° | 76° | 6.1 | 77° | 83° | – | – |
| Aug | 85° | 75° | 5.6 | 78° | 84° | – | – |
| Sep | 80° | 68° | 4.7 | 73° | 79° | $7 | $15 |
| Oct | 69° | 57° | 3.5 | 63° | 69° | – | – |
| Nov | 56° | 45° | 2.5 | 51° | 57° | – | – |
| Dec | 46° | 37° | 1.8 | 40° | 46° | – | – |
Heating costs most in May (about $94 with a heat pump, $187 with gas). Sunshine peaks in Jun at 6.3 kWh/m²/day (NASA satellite data, 52.4 km grid cell). Highlighted months are swimmable with no heater.
How Radcliff compares with nearby cities
Radcliff ranks 37 of 42 Kentucky cities for unheated swim months; Shepherdsville, Mount Washington, Bardstown nearby get a longer season without a heater.
| City | Distance | Unheated months | Heat pump months | Heat pump $/yr |
|---|---|---|---|---|
| Elizabethtown, KY | 9 mi | 0 | 5 | $117 |
| Shepherdsville, KY | 17 mi | 2 | 7 | $340 |
| Mount Washington, KY | 26 mi | 2 | 5 | $81 |
| Bardstown, KY | 26 mi | 1 | 5 | $87 |
| Shively, KY | 27 mi | 2 | 6 | $127 |
| Louisville/Jefferson County, KY | 29 mi | 2 | 5 | $81 |