Pool season · New Jersey
Paterson Pool Season: the Year on One Bar
Last updated: July 25, 2026 · dates · water temp
One bar, one year, one Paterson 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.
Paterson, NJ — 87 swim days a yearThe bar compresses Paterson's whole pool year into one lane rope: gray floats for the off-season, hollow teal for the April 23–May 14 opening window, solid teal for swim weeks, hollow amber for the closing stretch that ends October 8. Wherever the today marker sits, the nearest color change is your next appointment.
The Paterson pool calendar
Opening — target April 30
Target April 30; the practical window runs April 23–May 14, and the 7-day mean crosses the 61°F threshold around May 14. Cold-water starts are the cheap ones.
Closing — deadline October 8
The window opens September 28 once water leaves the algae zone; the model deadline is October 8, a week ahead of the October 28 freeze normal.
Estimated water temperature by month
This is Paterson'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° | 36° | 46° | 57° | 67° | 75° | 75° | 71° | 60° | 49° | 39° |
The curve peaks near 76°F — comfortable-water months here usually involve a heater or a solar cover.
Every station tells its own story: compare this curve with Newark's pool season and Trenton's — neighboring normals stations can shift the windows by a week or more. The full ranking lives on the New Jersey season index.
Paterson pool season FAQ
When should I open my pool in Paterson, NJ?
Target April 30. That date backs off two weeks from the day Paterson's 7-day mean temperature reaches 61°F, so you start up in cold, algae-resistant water. Work the full checklist in the Paterson opening guide.
When should I close my pool in Paterson?
The closing deadline is October 8 — late enough that the water has cooled out of the algae zone, early enough to beat Paterson's first-freeze normal by about a week. See the Paterson closing guide for the winterizing steps.
How long is the swim season in Paterson?
Paterson averages 87 days a year with normal highs of 80°F or better — right on the statewide median. The New Jersey season index ranks all 7 covered cities by the same metric.
How warm does pool water get in Paterson?
An unheated pool near Paterson typically peaks around 76°F in high summer and bottoms out near 30°F in winter, never quite reaching the 78°F comfort line without a heater or solar cover. The month-by-month curve above shows the whole cycle; the methodology page explains the ±5°F error bars.
Email me when Paterson hits the closing window
Data: NOAA 1991–2020 climate normals via Little Falls (3.9 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.