Pool season · California
Tracy Pool Season: the Year on One Bar
Last updated: July 25, 2026 · dates · water temp
One bar, one year, one Tracy 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.
Tracy, CA — 151 swim days a yearEach dot on the bar is one week of Tracy'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 5–April 26), solid teal is swim season, and hollow amber is the closing window ending November 3. The black marker is today — its position against the colors is the entire executive summary.
The Tracy pool calendar
Opening — target April 12
Open by April 12 — a two-week head start on the April 26 crossing keeps startup chemistry small and beats the local service rush.
Closing — deadline November 3
The window opens October 24 once water leaves the algae zone; the model deadline is November 3, a week ahead of the November 26 freeze normal.
Estimated water temperature by month
Monthly averages of the site's water model run on Tracy'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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 46° | 49° | 53° | 57° | 63° | 69° | 74° | 74° | 73° | 68° | 58° | 49° |
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 Torrance's pool season and Tulare's — neighboring normals stations can shift the windows by a week or more. The full ranking lives on the California season index.
Tracy pool season FAQ
When should I open my pool in Tracy, CA?
Open by April 12 — the model places Tracy's 61°F crossing about two weeks later, and every warm day you wait pushes the water toward the 65°F algae zone. The Tracy opening guide has the 12-step sequence.
When should I close my pool in Tracy?
Close by November 3: cool water keeps its winter chemistry, but freeze damage is the hard stop. The Tracy closing guide sequences the work backward from that date.
How long is the swim season in Tracy?
Tracy averages 151 days a year with normal highs of 80°F or better — about 11 days later than the California median. The California season index ranks all 147 covered cities by the same metric.
How warm does pool water get in Tracy?
An unheated pool near Tracy typically peaks around 75°F in high summer and bottoms out near 46°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 Tracy hits the closing window
Data: NOAA 1991–2020 climate normals via Tracy Carbona (6.6 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.