Pool season · Oklahoma
Broken Arrow Pool Season: the Year on One Bar
Last updated: July 15, 2026 · dates · water temp
One bar, one year, one Broken Arrow 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 Broken Arrow's typical year, colored by what the model says that week is for: gray weeks are off-season, hollow teal marks the opening window (April 1–April 22), solid teal is swim season, and hollow amber is the closing window ending October 25. The black marker is today — its position against the colors is the entire executive summary.
The Broken Arrow pool calendar
Opening — target April 8
Target April 8; the practical window runs April 1–April 22, and the 7-day mean crosses the 61°F threshold around April 22. Cold-water starts are the cheap ones.
Closing — deadline October 25
The window opens October 16 once water leaves the algae zone; the model deadline is October 25, a week ahead of the November 1 freeze normal.
Estimated water temperature by month
This is Broken Arrow'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° | 39° | 46° | 56° | 64° | 74° | 80° | 82° | 77° | 67° | 54° | 44° |
Warmest water typically July–August (peaking near 82°F); heaters and covers shift any month up.
Email me when Broken Arrow hits the closing window
Data: NOAA 1991–2020 climate normals via Bixby (6.9 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.