Pool season · Arizona
Scottsdale Pool Season: the Year on One Bar
Last updated: July 25, 2026 · dates · water temp
One bar, one year, one Scottsdale 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.
Scottsdale, AZ — 187 swim days a yearThe bar compresses Scottsdale's whole pool year into one lane rope: gray floats for the off-season, hollow teal for the February 28–March 21 opening window, solid teal for swim weeks, hollow amber for the closing stretch that ends November 26. Wherever the today marker sits, the nearest color change is your next appointment.
The Scottsdale 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 26
The window opens November 16 once water leaves the algae zone; the model deadline is November 26, a week ahead of the December 21 freeze normal.
Estimated water temperature by month
This is Scottsdale'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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 52° | 54° | 58° | 63° | 70° | 80° | 87° | 87° | 85° | 77° | 66° | 56° |
Warmest water typically June–September (peaking near 88°F); heaters and covers shift any month up.
Every station tells its own story: compare this curve with San Tan Valley's pool season and Surprise's — neighboring normals stations can shift the windows by a week or more. The full ranking lives on the Arizona season index.
Scottsdale pool season FAQ
When should I open my pool in Scottsdale, AZ?
Open by March 7 — the model places Scottsdale's 61°F crossing about two weeks later, and every warm day you wait pushes the water toward the 65°F algae zone. The Scottsdale opening guide has the 12-step sequence.
When should I close my pool in Scottsdale?
Close by November 26: cool water keeps its winter chemistry, but freeze damage is the hard stop. The Scottsdale closing guide sequences the work backward from that date.
How long is the swim season in Scottsdale?
Scottsdale averages 187 days a year with normal highs of 80°F or better — about 10 days later than the Arizona median. The Arizona season index ranks all 20 covered cities by the same metric.
How warm does pool water get in Scottsdale?
An unheated pool near Scottsdale typically peaks around 88°F in high summer and bottoms out near 52°F in winter, spending roughly 4 months at or above the 78°F comfort line most swimmers prefer. The month-by-month curve above shows the whole cycle; the methodology page explains the ±5°F error bars.
Email me when Scottsdale hits the closing window
Data: NOAA 1991–2020 climate normals via Pinnacle Peak (2.8 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.