Pool season · Nevada
Spring Valley Pool Season: the Year on One Bar
Last updated: July 25, 2026 · dates · water temp
This is the one-page view of Spring Valley'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.
Spring Valley, NV — 186 swim days a yearReading it takes ten seconds: 52 dots, one per week. Solid teal is Spring Valley's swim season; the hollow teal run before it (February 28 to March 21) is when to open; the hollow amber run after is when to close, with November 13 as the deadline; gray is the covered season. Today's marker shows where you stand in that cycle right now.
The Spring Valley pool calendar
Opening — target March 7
Open by March 7 — a two-week head start on the March 21 crossing keeps startup chemistry small and beats the local service rush.
Closing — deadline November 13
Hold the cover until November 3, then winterize by November 13, a week ahead of the December 5 freeze normal. Late and cold beats early and warm.
Estimated water temperature by month
This is Spring Valley's typical-year water curve: the same EWMA model as the live widget, run on the 1991–2020 normals instead of this week's weather.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 47° | 50° | 57° | 64° | 72° | 83° | 91° | 93° | 87° | 76° | 62° | 50° |
Warmest water typically June–September (peaking near 93°F); heaters and covers shift any month up.
Every station tells its own story: compare this curve with Sparks's pool season and Sunrise Manor's — neighboring normals stations can shift the windows by a week or more. The full ranking lives on the Nevada season index.
Spring Valley pool season FAQ
When should I open my pool in Spring Valley, NV?
Target March 7. That date backs off two weeks from the day Spring Valley's 7-day mean temperature reaches 61°F, so you start up in cold, algae-resistant water. Work the full checklist in the Spring Valley opening guide.
When should I close my pool in Spring Valley?
The closing deadline is November 13 — late enough that the water has cooled out of the algae zone, early enough to beat Spring Valley's first-freeze normal by about a week. See the Spring Valley closing guide for the winterizing steps.
How long is the swim season in Spring Valley?
Spring Valley averages 186 days a year with normal highs of 80°F or better — right on the statewide median. The Nevada season index ranks all 9 covered cities by the same metric.
How warm does pool water get in Spring Valley?
An unheated pool near Spring Valley typically peaks around 93°F in high summer and bottoms out near 47°F in winter, spending roughly 4 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 Spring Valley hits the closing window
Data: NOAA 1991–2020 climate normals via Las Vegas Wfo (5.5 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.