Pool season · California
Yorba Linda Pool Season: the Year on One Bar
Last updated: July 15, 2026 · dates · water temp
One bar, one year, one Yorba Linda 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 Yorba Linda's typical year, colored by what the model says that week is for: gray weeks are off-season, hollow teal marks the opening window (February 8–March 1), solid teal is swim season, and hollow amber is the closing window ending December 10. The black marker is today — its position against the colors is the entire executive summary.
The Yorba Linda pool calendar
Opening — target February 15
Target February 15; the practical window runs February 8–March 1, and the 7-day mean crosses the 61°F threshold around March 1. Cold-water starts are the cheap ones.
Closing — deadline December 10
Hold the cover until November 30, then winterize by December 10, a week ahead of the December 19 freeze normal. Late and cold beats early and warm.
Estimated water temperature by month
This is Yorba Linda'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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 60° | 60° | 61° | 64° | 67° | 70° | 74° | 77° | 77° | 74° | 68° | 61° |
The curve peaks near 78°F — comfortable-water months here usually involve a heater or a solar cover.
Email me when Yorba Linda hits the closing window
Data: NOAA 1991–2020 climate normals via Anaheim (4.4 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.