Pool swim season in Klamath Falls, OR
Swim season in Klamath Falls without a heater, and with one
An unheated pool in Klamath Falls never reaches 78°F in a normal year. It peaks around 70°F in Aug. The air allows up to 4 swimmable months with a heater (Jun to Sep).
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Heater options for a Klamath Falls pool, side by side
| Option | Months | Swimmable | Energy/yr | All-in/yr |
|---|---|---|---|---|
| No heater | 0 | no month | $0 | $0 |
| Solar cover only | 0 | no month | $0 | $50 |
| Solar panels + cover | 4 | Jun to Sep | $0 | $283 |
| Heat pump + cover | 4 | Jun to Sep | $316 | $866 |
| Gas heater + cover | 4 | Jun to Sep | $644 | $1,069 |
For a 450 sq ft pool held at 80°F, at OR prices of 15.5¢/kWh electricity and $17/Mcf gas. All-in spreads the purchase over the equipment's life.
The cheapest way to the full season in Klamath Falls
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.
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 a heat pump sized to your pool's surface area; here it beats gas all-in (heat pump or gas).
Weather station: Klamath Falls International Airport, 5.7 mi away (NOAA 1991–2020 normals). Water temperature is estimated from air and sunshine, not measured.
Klamath Falls 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° | 32° | 1.9 | 30° | 36° | – | – |
| Feb | 46° | 35° | 2.8 | 33° | 39° | – | – |
| Mar | 52° | 39° | 4.0 | 38° | 44° | – | – |
| Apr | 58° | 44° | 5.5 | 44° | 50° | – | – |
| May | 67° | 52° | 6.8 | 51° | 57° | – | – |
| Jun | 76° | 59° | 7.8 | 60° | 66° | $136 | $270 |
| Jul | 86° | 67° | 8.0 | 68° | 74° | $52 | $116 |
| Aug | 85° | 66° | 7.0 | 70° | 76° | $33 | $71 |
| Sep | 78° | 58° | 5.5 | 64° | 70° | $95 | $187 |
| Oct | 64° | 47° | 3.6 | 53° | 59° | – | – |
| Nov | 49° | 37° | 2.1 | 41° | 47° | – | – |
| Dec | 40° | 30° | 1.5 | 32° | 38° | – | – |
Heating costs most in Jun (about $136 with a heat pump, $270 with gas). Sunshine peaks in Jul at 8.0 kWh/m²/day (NASA satellite data, 38.8 km grid cell). Highlighted months are swimmable with no heater.
How Klamath Falls compares with nearby cities
Klamath Falls ranks 47 of 57 Oregon cities for unheated swim months; Medford, Central Point, Shasta Lake nearby get a longer season without a heater.
| City | Distance | Unheated months | Heat pump months | Heat pump $/yr |
|---|---|---|---|---|
| Ashland, OR | 47 mi | 0 | 5 | $375 |
| Medford, OR | 55 mi | 1 | 6 | $305 |
| Central Point, OR | 59 mi | 1 | 6 | $305 |
| Grants Pass, OR | 81 mi | 0 | 5 | $217 |
| Roseburg, OR | 106 mi | 0 | 5 | $262 |
| Shasta Lake, CA | 111 mi | 3 | 6 | $159 |