Pool season · California
Davis Pool Season: the Year on One Bar
Last updated: July 25, 2026 · dates · water temp
One bar, one year, one Davis 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.
Davis, CA — 158 swim days a yearThe bar compresses Davis's whole pool year into one lane rope: gray floats for the off-season, hollow teal for the April 2–April 23 opening window, solid teal for swim weeks, hollow amber for the closing stretch that ends November 5. Wherever the today marker sits, the nearest color change is your next appointment.
The Davis pool calendar
Opening — target April 9
Target April 9; the practical window runs April 2–April 23, and the 7-day mean crosses the 61°F threshold around April 23. Cold-water starts are the cheap ones.
Closing — deadline November 5
Hold the cover until October 26, then winterize by November 5, a week ahead of the December 1 freeze normal. Late and cold beats early and warm.
Estimated water temperature by month
Monthly averages of the site's water model run on Davis'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° | 70° | 74° | 75° | 74° | 69° | 59° | 50° |
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 Costa Mesa's pool season and Downey's — neighboring normals stations can shift the windows by a week or more. The full ranking lives on the California season index.
Davis pool season FAQ
When should I open my pool in Davis, CA?
Target April 9. That date backs off two weeks from the day Davis's 7-day mean temperature reaches 61°F, so you start up in cold, algae-resistant water. Work the full checklist in the Davis opening guide.
When should I close my pool in Davis?
The closing deadline is November 5 — late enough that the water has cooled out of the algae zone, early enough to beat Davis's first-freeze normal by about a week. See the Davis closing guide for the winterizing steps.
How long is the swim season in Davis?
Davis averages 158 days a year with normal highs of 80°F or better — about 8 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 Davis?
An unheated pool near Davis 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 Davis hits the closing window
Data: NOAA 1991–2020 climate normals via Davis 2 WSW Experiment Farm (2.5 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.