Pool season · Texas
Missouri City Pool Season: the Year on One Bar
Last updated: July 15, 2026 · dates · water temp
This is the one-page view of Missouri 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.
The bar compresses Missouri City's whole pool year into one lane rope: gray floats for the off-season, hollow teal for the February 15–March 8 opening window, solid teal for swim weeks, hollow amber for the closing stretch that ends November 29. Wherever the today marker sits, the nearest color change is your next appointment.
The Missouri City pool calendar
Opening — target February 22
Target February 22; the practical window runs February 15–March 8, and the 7-day mean crosses the 61°F threshold around March 8. Cold-water starts are the cheap ones.
Closing — deadline November 29
Hold the cover until November 19, then winterize by November 29, a week ahead of the December 6 freeze normal. Late and cold beats early and warm.
Estimated water temperature by month
This is Missouri 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 53° | 55° | 60° | 66° | 72° | 79° | 82° | 84° | 82° | 76° | 66° | 58° |
Warmest water typically June–September (peaking near 84°F); heaters and covers shift any month up.
Email me when Missouri City hits the closing window
Data: NOAA 1991–2020 climate normals via Thompsons 3 WSW (8.0 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.