Pool season · Nevada
Sparks Pool Season: the Year on One Bar
Last updated: July 25, 2026 · dates · water temp
One bar, one year, one Sparks 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.
Sparks, NV — 114 swim days a yearEach dot on the bar is one week of Sparks's typical year, colored by what the model says that week is for: gray weeks are off-season, hollow teal marks the opening window (May 5–May 26), solid teal is swim season, and hollow amber is the closing window ending October 3. The black marker is today — its position against the colors is the entire executive summary.
The Sparks pool calendar
Opening — target May 12
Target May 12; the practical window runs May 5–May 26, and the 7-day mean crosses the 61°F threshold around May 26. Cold-water starts are the cheap ones.
Closing — deadline October 3
The window opens September 27 once water leaves the algae zone; the model deadline is October 3, a week ahead of the October 10 freeze normal.
Estimated water temperature by month
Monthly averages of the site's water model run on Sparks'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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 36° | 38° | 43° | 48° | 55° | 63° | 71° | 74° | 69° | 59° | 48° | 38° |
The curve peaks near 74°F — comfortable-water months here usually involve a heater or a solar cover.
Every station tells its own story: compare this curve with Reno's pool season and Spring Valley's — neighboring normals stations can shift the windows by a week or more. The full ranking lives on the Nevada season index.
Sparks pool season FAQ
When should I open my pool in Sparks, NV?
Target May 12. That date backs off two weeks from the day Sparks's 7-day mean temperature reaches 61°F, so you start up in cold, algae-resistant water. Work the full checklist in the Sparks opening guide.
When should I close my pool in Sparks?
The closing deadline is October 3 — late enough that the water has cooled out of the algae zone, early enough to beat Sparks's first-freeze normal by about a week. See the Sparks closing guide for the winterizing steps.
How long is the swim season in Sparks?
Sparks averages 114 days a year with normal highs of 80°F or better — about 66 days later than the Nevada median. The Nevada season index ranks all 9 covered cities by the same metric.
How warm does pool water get in Sparks?
An unheated pool near Sparks typically peaks around 74°F in high summer and bottoms out near 35°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 Sparks hits the closing window
Data: NOAA 1991–2020 climate normals via Sparks (1.6 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.