Pool season · Nevada
Henderson Pool Season: the Year on One Bar
Last updated: July 15, 2026 · dates · water temp
One bar, one year, one Henderson 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.
Reading it takes ten seconds: 52 dots, one per week. Solid teal is Henderson's swim season; the hollow teal run before it (February 24 to March 17) is when to open; the hollow amber run after is when to close, with November 16 as the deadline; gray is the covered season. Today's marker shows where you stand in that cycle right now.
The Henderson pool calendar
Opening — target March 3
Open by March 3 — a two-week head start on the March 17 crossing keeps startup chemistry small and beats the local service rush.
Closing — deadline November 16
The window opens November 6 once water leaves the algae zone; the model deadline is November 16, a week ahead of the December 15 freeze normal.
Estimated water temperature by month
Monthly averages of the site's water model run on Henderson'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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 48° | 51° | 57° | 65° | 73° | 83° | 91° | 93° | 88° | 77° | 63° | 51° |
Warmest water typically June–September (peaking near 94°F); heaters and covers shift any month up.
Email me when Henderson hits the closing window
Data: NOAA 1991–2020 climate normals via Las Vegas Mccarran Airport (8.1 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.