Pool season · California
Eastvale Pool Season: the Year on One Bar
Last updated: July 15, 2026 · dates · water temp
Eastvale'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.
Reading it takes ten seconds: 52 dots, one per week. Solid teal is Eastvale's swim season; the hollow teal run before it (March 14 to April 4) is when to open; the hollow amber run after is when to close, with November 24 as the deadline; gray is the covered season. Today's marker shows where you stand in that cycle right now.
The Eastvale pool calendar
Opening — target March 21
Target March 21; the practical window runs March 14–April 4, and the 7-day mean crosses the 61°F threshold around April 4. Cold-water starts are the cheap ones.
Closing — deadline November 24
Hold the cover until November 14, then winterize by November 24, a week ahead of the December 19 freeze normal. Late and cold beats early and warm.
Estimated water temperature by month
Monthly averages of the site's water model run on Eastvale'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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 55° | 56° | 58° | 61° | 66° | 70° | 76° | 79° | 79° | 73° | 65° | 57° |
Warmest water typically August–September (peaking near 80°F); heaters and covers shift any month up.
Email me when Eastvale hits the closing window
Data: NOAA 1991–2020 climate normals via Chino Airport (3.4 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.