Pool season · California
Roseville Pool Season: the Year on One Bar
Last updated: July 15, 2026 · dates · water temp
This is the one-page view of Roseville'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.
The bar compresses Roseville's whole pool year into one lane rope: gray floats for the off-season, hollow teal for the April 4–April 25 opening window, solid teal for swim weeks, hollow amber for the closing stretch that ends November 2. Wherever the today marker sits, the nearest color change is your next appointment.
The Roseville pool calendar
Opening — target April 11
Open by April 11 — a two-week head start on the April 25 crossing keeps startup chemistry small and beats the local service rush.
Closing — deadline November 2
The window opens October 23 once water leaves the algae zone; the model deadline is November 2, a week ahead of the November 24 freeze normal.
Estimated water temperature by month
Monthly averages of the site's water model run on Roseville'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° | 53° | 56° | 63° | 70° | 75° | 76° | 74° | 68° | 58° | 48° |
The curve peaks near 76°F — comfortable-water months here usually involve a heater or a solar cover.
Email me when Roseville hits the closing window
Data: NOAA 1991–2020 climate normals via Sacramento Metro Airport (15.5 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.