Pool season · Texas
San Angelo Pool Season: the Year on One Bar
Last updated: July 15, 2026 · dates · water temp
One bar, one year, one San Angelo 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 San Angelo'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 1–March 22), solid teal is swim season, and hollow amber is the closing window ending November 3. The black marker is today — its position against the colors is the entire executive summary.
The San Angelo pool calendar
Opening — target March 8
Target March 8; the practical window runs March 1–March 22, and the 7-day mean crosses the 61°F threshold around March 22. Cold-water starts are the cheap ones.
Closing — deadline November 3
Hold the cover until November 1, then winterize by November 3, a week ahead of the November 10 freeze normal. Late and cold beats early and warm.
Estimated water temperature by month
Monthly averages of the site's water model run on San Angelo'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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 47° | 49° | 56° | 64° | 71° | 80° | 84° | 85° | 81° | 72° | 61° | 51° |
Warmest water typically June–September (peaking near 85°F); heaters and covers shift any month up.
Email me when San Angelo hits the closing window
Data: NOAA 1991–2020 climate normals via San Angelo (5.5 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.