Pool season · Pennsylvania
Erie Pool Season: the Year on One Bar
Last updated: July 25, 2026 · dates · water temp
One bar, one year, one Erie 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.
Erie, PA — 51 swim days a yearReading it takes ten seconds: 52 dots, one per week. Solid teal is Erie's swim season; the hollow teal run before it (May 2 to May 23) is when to open; the hollow amber run after is when to close, with October 7 as the deadline; gray is the covered season. Today's marker shows where you stand in that cycle right now.
The Erie pool calendar
Opening — target May 9
Open by May 9 — a two-week head start on the May 23 crossing keeps startup chemistry small and beats the local service rush.
Closing — deadline October 7
The window opens September 27 once water leaves the algae zone; the model deadline is October 7, a week ahead of the November 4 freeze normal.
Estimated water temperature by month
Monthly averages of the site's water model run on Erie'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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 30° | 28° | 32° | 42° | 54° | 64° | 71° | 72° | 69° | 60° | 49° | 38° |
The curve peaks near 73°F — comfortable-water months here usually involve a heater or a solar cover.
Every station tells its own story: compare this curve with Bethlehem's pool season and Harrisburg's — neighboring normals stations can shift the windows by a week or more. The full ranking lives on the Pennsylvania season index.
Erie pool season FAQ
When should I open my pool in Erie, PA?
Target May 9. That date backs off two weeks from the day Erie's 7-day mean temperature reaches 61°F, so you start up in cold, algae-resistant water. Work the full checklist in the Erie opening guide.
When should I close my pool in Erie?
The closing deadline is October 7 — late enough that the water has cooled out of the algae zone, early enough to beat Erie's first-freeze normal by about a week. See the Erie closing guide for the winterizing steps.
How long is the swim season in Erie?
Erie averages 51 days a year with normal highs of 80°F or better — about 10 days later than the Pennsylvania median. The Pennsylvania season index ranks all 12 covered cities by the same metric.
How warm does pool water get in Erie?
An unheated pool near Erie typically peaks around 73°F in high summer and bottoms out near 28°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 Erie hits the closing window
Data: NOAA 1991–2020 climate normals via Erie International Airport (6.2 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.