Pool season · Texas
Georgetown Pool Season: the Year on One Bar
Last updated: July 15, 2026 · dates · water temp
This is the one-page view of Georgetown'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 Georgetown'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 2–March 23), solid teal is swim season, and hollow amber is the closing window ending November 16. The black marker is today — its position against the colors is the entire executive summary.
The Georgetown pool calendar
Opening — target March 9
Target March 9; the practical window runs March 2–March 23, and the 7-day mean crosses the 61°F threshold around March 23. Cold-water starts are the cheap ones.
Closing — deadline November 16
Hold the cover until November 6, then winterize by November 16, a week ahead of the November 24 freeze normal. Late and cold beats early and warm.
Estimated water temperature by month
Monthly averages of the site's water model run on Georgetown'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° | 50° | 56° | 63° | 71° | 79° | 83° | 85° | 82° | 74° | 63° | 53° |
Warmest water typically June–September (peaking near 85°F); heaters and covers shift any month up.
Email me when Georgetown hits the closing window
Data: NOAA 1991–2020 climate normals via Georgetown Lake (1.6 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.