Pool season · Texas
Rowlett Pool Season: the Year on One Bar
Last updated: July 25, 2026 · dates · water temp
This is the one-page view of Rowlett'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.
Rowlett, TX — 146 swim days a yearThe bar compresses Rowlett's whole pool year into one lane rope: gray floats for the off-season, hollow teal for the March 16–April 6 opening window, solid teal for swim weeks, hollow amber for the closing stretch that ends November 7. Wherever the today marker sits, the nearest color change is your next appointment.
The Rowlett pool calendar
Opening — target March 23
Target March 23; the practical window runs March 16–April 6, and the 7-day mean crosses the 61°F threshold around April 6. Cold-water starts are the cheap ones.
Closing — deadline November 7
The window opens October 28 once water leaves the algae zone; the model deadline is November 7, a week ahead of the November 19 freeze normal.
Estimated water temperature by month
This is Rowlett'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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 44° | 46° | 52° | 60° | 67° | 76° | 81° | 84° | 80° | 71° | 60° | 50° |
Warmest water typically July–September (peaking near 84°F); heaters and covers shift any month up.
Every station tells its own story: compare this curve with Round Rock's pool season and San Angelo's — neighboring normals stations can shift the windows by a week or more. The full ranking lives on the Texas season index.
Rowlett pool season FAQ
When should I open my pool in Rowlett, TX?
Target March 23. That date backs off two weeks from the day Rowlett's 7-day mean temperature reaches 61°F, so you start up in cold, algae-resistant water. Work the full checklist in the Rowlett opening guide.
When should I close my pool in Rowlett?
The closing deadline is November 7 — late enough that the water has cooled out of the algae zone, early enough to beat Rowlett's first-freeze normal by about a week. See the Rowlett closing guide for the winterizing steps.
How long is the swim season in Rowlett?
Rowlett averages 146 days a year with normal highs of 80°F or better — about 15 days later than the Texas median. The Texas season index ranks all 68 covered cities by the same metric.
How warm does pool water get in Rowlett?
An unheated pool near Rowlett typically peaks around 84°F in high summer and bottoms out near 44°F in winter, spending roughly 3 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 Rowlett hits the closing window
Data: NOAA 1991–2020 climate normals via Lavon Dam (9.1 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.