Pool season · California
Stockton Pool Season: the Year on One Bar
Last updated: July 15, 2026 · dates · water temp
One bar, one year, one Stockton 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 Stockton'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 20–April 10), solid teal is swim season, and hollow amber is the closing window ending November 10. The black marker is today — its position against the colors is the entire executive summary.
The Stockton pool calendar
Opening — target March 27
Open by March 27 — a two-week head start on the April 10 crossing keeps startup chemistry small and beats the local service rush.
Closing — deadline November 10
Hold the cover until October 31, then winterize by November 10, a week ahead of the December 8 freeze normal. Late and cold beats early and warm.
Estimated water temperature by month
Monthly averages of the site's water model run on Stockton'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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 48° | 51° | 56° | 60° | 66° | 72° | 77° | 78° | 76° | 71° | 61° | 52° |
Warmest water typically August–August (peaking near 78°F); heaters and covers shift any month up.
Email me when Stockton hits the closing window
Data: NOAA 1991–2020 climate normals via Stockton Fire Station 4 (1.6 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.