Pool season · California
Chico Pool Season: the Year on One Bar
Last updated: July 15, 2026 · dates · water temp
One bar, one year, one Chico 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.
The bar compresses Chico's whole pool year into one lane rope: gray floats for the off-season, hollow teal for the April 3–April 24 opening window, solid teal for swim weeks, hollow amber for the closing stretch that ends November 1. Wherever the today marker sits, the nearest color change is your next appointment.
The Chico pool calendar
Opening — target April 10
Target April 10; the practical window runs April 3–April 24, and the 7-day mean crosses the 61°F threshold around April 24. Cold-water starts are the cheap ones.
Closing — deadline November 1
Hold the cover until October 22, then winterize by November 1, a week ahead of the November 17 freeze normal. Late and cold beats early and warm.
Estimated water temperature by month
Monthly averages of the site's water model run on Chico'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° | 48° | 52° | 57° | 63° | 71° | 76° | 78° | 75° | 69° | 57° | 49° |
Warmest water typically August–August (peaking near 78°F); heaters and covers shift any month up.
Email me when Chico hits the closing window
Data: NOAA 1991–2020 climate normals via Chico University Farm (4.6 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.