Pool season · New Mexico
Las Cruces Pool Season: the Year on One Bar
Last updated: July 15, 2026 · dates · water temp
One bar, one year, one Las Cruces 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 Cruces'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 21–April 11), solid teal is swim season, and hollow amber is the closing window ending November 2. The black marker is today — its position against the colors is the entire executive summary.
The Las Cruces pool calendar
Opening — target March 28
Target March 28; the practical window runs March 21–April 11, and the 7-day mean crosses the 61°F threshold around April 11. Cold-water starts are the cheap ones.
Closing — deadline November 2
The window opens October 23 once water leaves the algae zone; the model deadline is November 2, a week ahead of the November 13 freeze normal.
Estimated water temperature by month
This is Las Cruces'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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 43° | 46° | 52° | 59° | 66° | 76° | 82° | 82° | 78° | 69° | 58° | 47° |
Warmest water typically July–September (peaking near 82°F); heaters and covers shift any month up.
Email me when Las Cruces hits the closing window
Data: NOAA 1991–2020 climate normals via State University (3.5 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.