Pool season · Oklahoma
Broken Arrow Pool Season: the Year on One Bar
Last updated: July 25, 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.
Broken Arrow, OK — 137 swim days a yearEach 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.
Every station tells its own story: compare this curve with Tulsa's pool season and Edmond's — neighboring normals stations can shift the windows by a week or more. The full ranking lives on the Oklahoma season index.
Broken Arrow pool season FAQ
When should I open my pool in Broken Arrow, OK?
Open by April 8 — the model places Broken Arrow's 61°F crossing about two weeks later, and every warm day you wait pushes the water toward the 65°F algae zone. The Broken Arrow opening guide has the 12-step sequence.
When should I close my pool in Broken Arrow?
Close by October 25: cool water keeps its winter chemistry, but freeze damage is the hard stop. The Broken Arrow closing guide sequences the work backward from that date.
How long is the swim season in Broken Arrow?
Broken Arrow averages 137 days a year with normal highs of 80°F or better — right on the statewide median. The Oklahoma season index ranks all 6 covered cities by the same metric.
How warm does pool water get in Broken Arrow?
An unheated pool near Broken Arrow typically peaks around 82°F in high summer and bottoms out near 37°F in winter, spending roughly 2 months at or above the 78°F comfort line most swimmers prefer. The month-by-month curve above shows the whole cycle; the methodology page explains the ±5°F error bars.
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.