Pool season · Nevada
Las Vegas Pool Season: the Year on One Bar
Last updated: July 15, 2026 · dates · water temp
One bar, one year, one Las Vegas 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.
Each dot on the bar is one week of Las Vegas'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 2–March 23), solid teal is swim season, and hollow amber is the closing window ending November 14. The black marker is today — its position against the colors is the entire executive summary.
The Las Vegas pool calendar
Opening — target March 9
Open by March 9 — a two-week head start on the March 23 crossing keeps startup chemistry small and beats the local service rush.
Closing — deadline November 14
The window opens November 4 once water leaves the algae zone; the model deadline is November 14, a week ahead of the December 10 freeze normal.
Estimated water temperature by month
This is Las Vegas'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° | 56° | 63° | 71° | 82° | 90° | 91° | 87° | 75° | 62° | 50° |
Warmest water typically June–September (peaking near 92°F); heaters and covers shift any month up.
Email me when Las Vegas hits the closing window
Data: NOAA 1991–2020 climate normals via Las Vegas Air Terminal (4.2 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.