Pool season · Georgia
Alpharetta Pool Season: the Year on One Bar
Last updated: July 15, 2026 · dates · water temp
One bar, one year, one Alpharetta 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.
The bar compresses Alpharetta's whole pool year into one lane rope: gray floats for the off-season, hollow teal for the March 26–April 16 opening window, solid teal for swim weeks, hollow amber for the closing stretch that ends October 27. Wherever the today marker sits, the nearest color change is your next appointment.
The Alpharetta pool calendar
Opening — target April 2
Open by April 2 — a two-week head start on the April 16 crossing keeps startup chemistry small and beats the local service rush.
Closing — deadline October 27
The window opens October 17 once water leaves the algae zone; the model deadline is October 27, a week ahead of the November 9 freeze normal.
Estimated water temperature by month
Monthly averages of the site's water model run on Alpharetta'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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 43° | 44° | 50° | 58° | 66° | 74° | 78° | 80° | 76° | 68° | 56° | 48° |
Warmest water typically July–August (peaking near 80°F); heaters and covers shift any month up.
Email me when Alpharetta hits the closing window
Data: NOAA 1991–2020 climate normals via Atlanta Peachtree Airport (13.6 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.