Pool season · Tennessee
Jackson Pool Season: the Year on One Bar
Last updated: July 15, 2026 · dates · water temp
One bar, one year, one Jackson pool. The season bar below draws everything the model knows — opening window, prime season, closing window — against today's date, with the working details one click away on the opening and closing pages.
Each dot on the bar is one week of Jackson's typical year, colored by what the model says that week is for: gray weeks are off-season, hollow teal marks the opening window (March 29–April 19), solid teal is swim season, and hollow amber is the closing window ending October 22. The black marker is today — its position against the colors is the entire executive summary.
The Jackson pool calendar
Opening — target April 5
Open by April 5 — a two-week head start on the April 19 crossing keeps startup chemistry small and beats the local service rush.
Closing — deadline October 22
The window opens October 15 once water leaves the algae zone; the model deadline is October 22, a week ahead of the October 29 freeze normal.
Estimated water temperature by month
Monthly averages of the site's water model run on Jackson'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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 39° | 39° | 46° | 56° | 65° | 74° | 79° | 80° | 76° | 67° | 54° | 45° |
Warmest water typically July–August (peaking near 80°F); heaters and covers shift any month up.
Email me when Jackson hits the closing window
Data: NOAA 1991–2020 climate normals via Jackson Experiment Station (2.3 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.