Pool season · Texas
Mission Pool Season: the Year on One Bar
Last updated: July 15, 2026 · dates · water temp
Mission runs a twelve-month pool calendar — the model finds no week cold enough to force a closing. This page tracks the water-temperature curve and the prime-season stretch; the spring refresh and winter care guides cover the routines that replace opening and closing here. Keep it bookmarked as the between-guides dashboard for the year.
One color, 52 dots: Mission's bar has no gray because the model never finds a week that forces a closing. Use the monthly water estimates below instead — the swing from 62°F to 90°F is what actually shapes swimming and maintenance here, from heater decisions at the cool end to sanitizer demand across the 260 days of genuine summer.
The Mission pool calendar
Spring refresh
No forced dates: the 7-day mean never leaves the swim-viable range (floor 62.0°F). Spring refresh and winter care replace opening and closing.
Winter care
No forced dates: the 7-day mean never leaves the swim-viable range (floor 62.0°F). Spring refresh and winter care replace opening and closing.
Estimated water temperature by month
Monthly averages of the site's water model run on Mission's own normals — the shape of a typical year, not a forecast. The widget above shows where the current year actually sits.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 63° | 65° | 70° | 76° | 81° | 86° | 88° | 89° | 87° | 82° | 74° | 66° |
Warmest water typically May–October (peaking near 90°F); heaters and covers shift any month up.
Email me when Mission hits the closing window
Data: NOAA 1991–2020 climate normals via Mcallen Miller International Airport (4.7 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.