Pool season · Oklahoma
Oklahoma City Pool Season: the Year on One Bar
Last updated: July 15, 2026 · dates · water temp
This is the one-page view of Oklahoma City'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 Oklahoma City's swim season; the hollow teal run before it (April 2 to April 23) is when to open; the hollow amber run after is when to close, with October 26 as the deadline; gray is the covered season. Today's marker shows where you stand in that cycle right now.
The Oklahoma City pool calendar
Opening — target April 9
Target April 9; the practical window runs April 2–April 23, and the 7-day mean crosses the 61°F threshold around April 23. Cold-water starts are the cheap ones.
Closing — deadline October 26
Hold the cover until October 16, then winterize by October 26, a week ahead of the November 2 freeze normal. Late and cold beats early and warm.
Estimated water temperature by month
This is Oklahoma City'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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 38° | 40° | 47° | 56° | 64° | 73° | 80° | 82° | 77° | 67° | 55° | 44° |
Warmest water typically July–August (peaking near 82°F); heaters and covers shift any month up.
Email me when Oklahoma City hits the closing window
Data: NOAA 1991–2020 climate normals via Oklahoma City Will Rogers Airport (7.3 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.