Pool season · California
Glendale Pool Season: the Year on One Bar
Last updated: July 25, 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.
Glendale, CA — 129 swim days a yearReading it takes ten seconds: 52 dots, one per week. Solid teal is Glendale's swim season; the hollow teal run before it (March 18 to April 8) is when to open; the hollow amber run after is when to close, with November 23 as the deadline; gray is the covered season. Today's marker shows where you stand in that cycle right now.
The Glendale pool calendar
Opening — target March 25
Target March 25; the practical window runs March 18–April 8, and the 7-day mean crosses the 61°F threshold around April 8. Cold-water starts are the cheap ones.
Closing — deadline November 23
Hold the cover until November 13, then winterize by November 23, a week ahead of the December 26 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 55° | 56° | 58° | 61° | 64° | 67° | 72° | 75° | 75° | 71° | 64° | 57° |
The curve peaks near 76°F — comfortable-water months here usually involve a heater or a solar cover.
Every station tells its own story: compare this curve with Gilroy's pool season and Hanford's — neighboring normals stations can shift the windows by a week or more. The full ranking lives on the California season index.
Glendale pool season FAQ
When should I open my pool in Glendale, CA?
Open by March 25 — the model places Glendale's 61°F crossing about two weeks later, and every warm day you wait pushes the water toward the 65°F algae zone. The Glendale opening guide has the 12-step sequence.
When should I close my pool in Glendale?
Close by November 23: cool water keeps its winter chemistry, but freeze damage is the hard stop. The Glendale closing guide sequences the work backward from that date.
How long is the swim season in Glendale?
Glendale averages 129 days a year with normal highs of 80°F or better — about 7 days earlier than the California median. The California season index ranks all 147 covered cities by the same metric.
How warm does pool water get in Glendale?
An unheated pool near Glendale typically peaks around 76°F in high summer and bottoms out near 55°F in winter, never quite reaching the 78°F comfort line without a heater or solar cover. The month-by-month curve above shows the whole cycle; the methodology page explains the ±5°F error bars.
Email me when Glendale hits the closing window
Data: NOAA 1991–2020 climate normals via Burbank Valley Pump Plt (5.8 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.