Pool season · California
Clovis Pool Season: the Year on One Bar
Last updated: July 25, 2026 · dates · water temp
Clovis's whole pool calendar, condensed: when the water warms, when it cools, and where today falls between those edges. Use the opening guide and closing guide for the step-by-step work; keep this page for the dates.
Clovis, CA — 160 swim days a yearReading it takes ten seconds: 52 dots, one per week. Solid teal is Clovis's swim season; the hollow teal run before it (March 21 to April 11) is when to open; the hollow amber run after is when to close, with November 9 as the deadline; gray is the covered season. Today's marker shows where you stand in that cycle right now.
The Clovis pool calendar
Opening — target March 28
Target March 28; the practical window runs March 21–April 11, and the 7-day mean crosses the 61°F threshold around April 11. Cold-water starts are the cheap ones.
Closing — deadline November 9
Hold the cover until October 30, then winterize by November 9, a week ahead of the December 14 freeze normal. Late and cold beats early and warm.
Estimated water temperature by month
Monthly averages of the site's water model run on Clovis'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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 47° | 50° | 55° | 60° | 67° | 74° | 82° | 83° | 80° | 72° | 60° | 50° |
Warmest water typically July–September (peaking near 84°F); heaters and covers shift any month up.
Every station tells its own story: compare this curve with Citrus Heights's pool season and Compton's — neighboring normals stations can shift the windows by a week or more. The full ranking lives on the California season index.
Clovis pool season FAQ
When should I open my pool in Clovis, CA?
Target March 28. That date backs off two weeks from the day Clovis's 7-day mean temperature reaches 61°F, so you start up in cold, algae-resistant water. Work the full checklist in the Clovis opening guide.
When should I close my pool in Clovis?
The closing deadline is November 9 — late enough that the water has cooled out of the algae zone, early enough to beat Clovis's first-freeze normal by about a week. See the Clovis closing guide for the winterizing steps.
How long is the swim season in Clovis?
Clovis averages 160 days a year with normal highs of 80°F or better — about 4 days earlier than the California median. The California season index ranks all 147 covered cities by the same metric.
How warm does pool water get in Clovis?
An unheated pool near Clovis typically peaks around 84°F in high summer and bottoms out near 47°F in winter, spending roughly 3 months at or above the 78°F comfort line most swimmers prefer. The month-by-month curve above shows the whole cycle; the methodology page explains the ±5°F error bars.
Email me when Clovis hits the closing window
Data: NOAA 1991–2020 climate normals via Fresno Yosemite International Airport (3.9 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.