Pool season · Arizona
Casas Adobes Pool Season: the Year on One Bar
Last updated: July 15, 2026 · dates · water temp
One bar, one year, one Casas Adobes 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 Casas Adobes'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 28–March 21), 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 Casas Adobes pool calendar
Opening — target March 7
Open by March 7 — a two-week head start on the March 21 crossing keeps startup chemistry small and beats the local service rush.
Closing — deadline November 23
Hold the cover until November 13, then winterize by November 23, a week ahead of the December 4 freeze normal. Late and cold beats early and warm.
Estimated water temperature by month
This is Casas Adobes'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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 51° | 53° | 57° | 64° | 71° | 81° | 87° | 86° | 84° | 77° | 66° | 55° |
Warmest water typically June–September (peaking near 88°F); heaters and covers shift any month up.
Email me when Casas Adobes hits the closing window
Data: NOAA 1991–2020 climate normals via Tohono Chul (1.8 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.