Pool season · Colorado
Pueblo Pool Season: the Year on One Bar
Last updated: July 15, 2026 · dates · water temp
This is the one-page view of Pueblo'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.
Reading it takes ten seconds: 52 dots, one per week. Solid teal is Pueblo's swim season; the hollow teal run before it (April 25 to May 16) is when to open; the hollow amber run after is when to close, with October 2 as the deadline; gray is the covered season. Today's marker shows where you stand in that cycle right now.
The Pueblo pool calendar
Opening — target May 2
Target May 2; the practical window runs April 25–May 16, and the 7-day mean crosses the 61°F threshold around May 16. Cold-water starts are the cheap ones.
Closing — deadline October 2
Hold the cover until September 29, then winterize by October 2, a week ahead of the October 9 freeze normal. Late and cold beats early and warm.
Estimated water temperature by month
This is Pueblo'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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 30° | 33° | 39° | 49° | 56° | 68° | 75° | 77° | 71° | 60° | 46° | 34° |
The curve peaks near 78°F — comfortable-water months here usually involve a heater or a solar cover.
Email me when Pueblo hits the closing window
Data: NOAA 1991–2020 climate normals via Wfo Pueblo (4.9 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.