Pool season · Arizona
Glendale Pool Season: the Year on One Bar
Last updated: July 15, 2026 · dates · water temp
This is the one-page view of Glendale'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 Glendale'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 16–March 9), solid teal is swim season, and hollow amber is the closing window ending November 24. The black marker is today — its position against the colors is the entire executive summary.
The Glendale pool calendar
Opening — target February 23
Target February 23; the practical window runs February 16–March 9, and the 7-day mean crosses the 61°F threshold around March 9. Cold-water starts are the cheap ones.
Closing — deadline November 24
Hold the cover until November 14, then winterize by November 24, a week ahead of the December 15 freeze normal. Late and cold beats early and warm.
Estimated water temperature by month
Monthly averages of the site's water model run on Glendale'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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 52° | 55° | 60° | 66° | 74° | 83° | 91° | 92° | 89° | 79° | 67° | 55° |
Warmest water typically June–October (peaking near 92°F); heaters and covers shift any month up.
Email me when Glendale hits the closing window
Data: NOAA 1991–2020 climate normals via Youngtown (4.2 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.