Pool season · Tennessee
Franklin Pool Season: the Year on One Bar
Last updated: July 15, 2026 · dates · water temp
Franklin's whole pool calendar, condensed: when the water warms, when it cools, and where today falls between those edges. Use the opening guide and closing guide for the step-by-step work; keep this page for the dates.
The bar compresses Franklin's whole pool year into one lane rope: gray floats for the off-season, hollow teal for the April 2–April 23 opening window, solid teal for swim weeks, hollow amber for the closing stretch that ends October 24. Wherever the today marker sits, the nearest color change is your next appointment.
The Franklin pool calendar
Opening — target April 9
Open by April 9 — a two-week head start on the April 23 crossing keeps startup chemistry small and beats the local service rush.
Closing — deadline October 24
Hold the cover until October 14, then winterize by October 24, a week ahead of the October 31 freeze normal. Late and cold beats early and warm.
Estimated water temperature by month
Monthly averages of the site's water model run on Franklin's own normals — the shape of a typical year, not a forecast. The widget above shows where the current year actually sits.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 40° | 40° | 46° | 55° | 64° | 72° | 79° | 79° | 76° | 66° | 54° | 45° |
Warmest water typically July–August (peaking near 80°F); heaters and covers shift any month up.
Email me when Franklin hits the closing window
Data: NOAA 1991–2020 climate normals via Franklin Sewage Plt (1.8 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.