Pool opening · State guide
When to Open Your Pool in Alabama
Last updated: July 15, 2026 · 10 cities covered
Alabama's opening calendar spans about 36 days. The earliest model date belongs to Mobile (February 27), the latest to Florence (April 4), and the statewide median lands on March 22.
Every date is the same model — two weeks ahead of the day the local 7-day mean temperature crosses 61°F — applied to each city's own NOAA normals station. Click through for the live water estimate, the full window, and the 12-step checklist.
| City | Open by | Window opens | 61°F crossing |
|---|---|---|---|
| Anniston | Mar 27 | Mar 20 | Apr 10 |
| Auburn | Mar 24 | Mar 17 | Apr 7 |
| Birmingham | Mar 23 | Mar 16 | Apr 6 |
| Dothan | Mar 3 | Feb 24 | Mar 17 |
| Florence | Apr 4 | Mar 28 | Apr 18 |
| Hoover | Mar 21 | Mar 14 | Apr 4 |
| Huntsville | Mar 26 | Mar 19 | Apr 9 |
| Mobile | Feb 27 | Feb 20 | Mar 13 |
| Montgomery | Mar 3 | Feb 24 | Mar 17 |
| Tuscaloosa | Mar 20 | Mar 13 | Apr 3 |
Dates are typical-year model outputs, not forecasts — each city guide carries the live widget that tracks the current year against them.
How to use these dates
Each "open by" date is two weeks ahead of that city's own 61°F crossing — the day its 7-day mean temperature (highs and lows averaged, from the nearest NOAA 1991–2020 normals station) reaches the level where unheated pool water starts climbing toward the 65°F algae-growth zone. Opening inside the window means starting up in cold, algae-resistant water: a single label-dosed shock instead of a green-water recovery, and a shopping trip while Alabama stores are still fully stocked.
Dates are typical-year guidance, not forecasts. A warm or late spring shifts the real-world moment by a week or two in either direction — every city guide carries a live water-temperature widget that tracks the current year against these normals, plus the full 12-step opening checklist sequenced to its local window. New to the process? Start with the generic how-to-open guide and the chemicals shopping list, then come back for your city's dates.