Pool season · Tennessee
Kingsport Pool Season: the Year on One Bar
Last updated: July 15, 2026 · dates · water temp
This is the one-page view of Kingsport's pool year: both model windows, the estimated water-temperature curve, and today's live position on the season bar. The detailed checklists live on the opening and closing guides; this page is the calendar you check between them.
The bar compresses Kingsport's whole pool year into one lane rope: gray floats for the off-season, hollow teal for the April 6–April 27 opening window, solid teal for swim weeks, hollow amber for the closing stretch that ends October 19. Wherever the today marker sits, the nearest color change is your next appointment.
The Kingsport pool calendar
Opening — target April 13
Open by April 13 — a two-week head start on the April 27 crossing keeps startup chemistry small and beats the local service rush.
Closing — deadline October 19
Hold the cover until October 9, then winterize by October 19, a week ahead of the October 29 freeze normal. Late and cold beats early and warm.
Estimated water temperature by month
This is Kingsport's typical-year water curve: the same EWMA model as the live widget, run on the 1991–2020 normals instead of this week's weather.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 38° | 38° | 44° | 53° | 62° | 70° | 76° | 76° | 73° | 64° | 52° | 43° |
The curve peaks near 76°F — comfortable-water months here usually involve a heater or a solar cover.
Email me when Kingsport hits the closing window
Data: NOAA 1991–2020 climate normals via Kingsport (1.0 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.