Pool season · Arizona
Prescott Valley Pool Season: the Year on One Bar
Last updated: July 25, 2026 · dates · water temp
This is the one-page view of Prescott Valley'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.
Prescott Valley, AZ — 122 swim days a yearEach dot on the bar is one week of Prescott Valley's typical year, colored by what the model says that week is for: gray weeks are off-season, hollow teal marks the opening window (April 27–May 18), solid teal is swim season, and hollow amber is the closing window ending October 13. The black marker is today — its position against the colors is the entire executive summary.
The Prescott Valley pool calendar
Opening — target May 4
Target May 4; the practical window runs April 27–May 18, and the 7-day mean crosses the 61°F threshold around May 18. Cold-water starts are the cheap ones.
Closing — deadline October 13
Hold the cover until October 3, then winterize by October 13, a week ahead of the October 20 freeze normal. Late and cold beats early and warm.
Estimated water temperature by month
Monthly averages of the site's water model run on Prescott Valley'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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 38° | 39° | 44° | 50° | 57° | 66° | 74° | 75° | 71° | 62° | 51° | 41° |
The curve peaks near 75°F — comfortable-water months here usually involve a heater or a solar cover.
Every station tells its own story: compare this curve with Phoenix's pool season and Queen Creek's — neighboring normals stations can shift the windows by a week or more. The full ranking lives on the Arizona season index.
Prescott Valley pool season FAQ
When should I open my pool in Prescott Valley, AZ?
Open by May 4 — the model places Prescott Valley's 61°F crossing about two weeks later, and every warm day you wait pushes the water toward the 65°F algae zone. The Prescott Valley opening guide has the 12-step sequence.
When should I close my pool in Prescott Valley?
Close by October 13: cool water keeps its winter chemistry, but freeze damage is the hard stop. The Prescott Valley closing guide sequences the work backward from that date.
How long is the swim season in Prescott Valley?
Prescott Valley averages 122 days a year with normal highs of 80°F or better — about 68 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 Prescott Valley?
An unheated pool near Prescott Valley typically peaks around 75°F in high summer and bottoms out near 37°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 Prescott Valley hits the closing window
Data: NOAA 1991–2020 climate normals via Prescott (6.7 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.