Pool season · California
Moreno Valley Pool Season: the Year on One Bar
Last updated: July 15, 2026 · dates · water temp
This is the one-page view of Moreno Valley'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.
Each dot on the bar is one week of Moreno Valley'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 22–April 12), solid teal is swim season, and hollow amber is the closing window ending November 23. The black marker is today — its position against the colors is the entire executive summary.
The Moreno Valley pool calendar
Opening — target March 29
Target March 29; the practical window runs March 22–April 12, and the 7-day mean crosses the 61°F threshold around April 12. Cold-water starts are the cheap ones.
Closing — deadline November 23
Hold the cover until November 13, then winterize by November 23, 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 Moreno Valley'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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 53° | 54° | 56° | 60° | 64° | 69° | 77° | 80° | 78° | 72° | 64° | 56° |
Warmest water typically August–September (peaking near 80°F); heaters and covers shift any month up.
Email me when Moreno Valley hits the closing window
Data: NOAA 1991–2020 climate normals via Redlands (7.8 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.