Pool season · California
Visalia Pool Season: the Year on One Bar
Last updated: July 15, 2026 · dates · water temp
This is the one-page view of Visalia'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 Visalia's whole pool year into one lane rope: gray floats for the off-season, hollow teal for the March 28–April 18 opening window, solid teal for swim weeks, hollow amber for the closing stretch that ends November 6. Wherever the today marker sits, the nearest color change is your next appointment.
The Visalia pool calendar
Opening — target April 4
Target April 4; the practical window runs March 28–April 18, and the 7-day mean crosses the 61°F threshold around April 18. Cold-water starts are the cheap ones.
Closing — deadline November 6
Hold the cover until October 27, then winterize by November 6, a week ahead of the December 13 freeze normal. Late and cold beats early and warm.
Estimated water temperature by month
This is Visalia'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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 46° | 49° | 54° | 58° | 65° | 72° | 78° | 80° | 77° | 70° | 59° | 49° |
Warmest water typically July–August (peaking near 81°F); heaters and covers shift any month up.
Email me when Visalia hits the closing window
Data: NOAA 1991–2020 climate normals via Visalia (1.5 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.