Pool season · California
Jurupa Valley Pool Season: the Year on One Bar
Last updated: July 25, 2026 · dates · water temp
One bar, one year, one Jurupa Valley 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.
Jurupa Valley, CA — 164 swim days a yearEach dot on the bar is one week of Jurupa Valley's typical year, colored by what the model says that week is for: gray weeks are off-season, hollow teal marks the opening window (March 10–March 31), solid teal is swim season, and hollow amber is the closing window ending November 25. The black marker is today — its position against the colors is the entire executive summary.
The Jurupa Valley pool calendar
Opening — target March 17
Open by March 17 — a two-week head start on the March 31 crossing keeps startup chemistry small and beats the local service rush.
Closing — deadline November 25
The window opens November 15 once water leaves the algae zone; the model deadline is November 25, a week ahead of the December 30 freeze normal.
Estimated water temperature by month
Monthly averages of the site's water model run on Jurupa Valley'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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 55° | 56° | 58° | 61° | 66° | 70° | 76° | 80° | 79° | 73° | 65° | 57° |
Warmest water typically August–September (peaking near 80°F); heaters and covers shift any month up.
Every station tells its own story: compare this curve with Irvine's pool season and Lake Elsinore's — neighboring normals stations can shift the windows by a week or more. The full ranking lives on the California season index.
Jurupa Valley pool season FAQ
When should I open my pool in Jurupa Valley, CA?
Target March 17. That date backs off two weeks from the day Jurupa Valley's 7-day mean temperature reaches 61°F, so you start up in cold, algae-resistant water. Work the full checklist in the Jurupa Valley opening guide.
When should I close my pool in Jurupa Valley?
The closing deadline is November 25 — late enough that the water has cooled out of the algae zone, early enough to beat Jurupa Valley's first-freeze normal by about a week. See the Jurupa Valley closing guide for the winterizing steps.
How long is the swim season in Jurupa Valley?
Jurupa Valley averages 164 days a year with normal highs of 80°F or better — about 15 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 Jurupa Valley?
An unheated pool near Jurupa Valley typically peaks around 80°F in high summer and bottoms out near 55°F in winter, spending roughly 2 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 Jurupa Valley hits the closing window
Data: NOAA 1991–2020 climate normals via Riverside Municipal Airport (3.9 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.