Pool season · Massachusetts
Fall River Pool Season: the Year on One Bar
Last updated: July 15, 2026 · dates · water temp
This is the one-page view of Fall River'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 Fall River's whole pool year into one lane rope: gray floats for the off-season, hollow teal for the May 11–June 1 opening window, solid teal for swim weeks, hollow amber for the closing stretch that ends October 2. Wherever the today marker sits, the nearest color change is your next appointment.
The Fall River pool calendar
Opening — target May 18
Open by May 18 — a two-week head start on the June 1 crossing keeps startup chemistry small and beats the local service rush.
Closing — deadline October 2
Hold the cover until September 22, then winterize by October 2, a week ahead of the October 15 freeze normal. Late and cold beats early and warm.
Estimated water temperature by month
This is Fall River'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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 32° | 30° | 35° | 43° | 52° | 62° | 70° | 72° | 67° | 58° | 48° | 39° |
The curve peaks near 72°F — comfortable-water months here usually involve a heater or a solar cover.
Email me when Fall River hits the closing window
Data: NOAA 1991–2020 climate normals via New Bedford Municipal Airport (7.8 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.