Pool season · Idaho
Coeur d'Alene Pool Season: the Year on One Bar
Last updated: July 15, 2026 · dates · water temp
This is the one-page view of Coeur d'Alene'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.
Each dot on the bar is one week of Coeur d'Alene's typical year, colored by what the model says that week is for: gray weeks are off-season, hollow teal marks the opening window (May 25–June 15), solid teal is swim season, and hollow amber is the closing window ending September 26. The black marker is today — its position against the colors is the entire executive summary.
The Coeur d'Alene pool calendar
Opening — target June 1
Open by June 1 — a two-week head start on the June 15 crossing keeps startup chemistry small and beats the local service rush.
Closing — deadline September 26
The window opens September 16 once water leaves the algae zone; the model deadline is September 26, a week ahead of the October 18 freeze normal.
Estimated water temperature by month
This is Coeur d'Alene'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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 31° | 32° | 37° | 43° | 51° | 59° | 66° | 71° | 65° | 55° | 42° | 34° |
The curve peaks near 72°F — comfortable-water months here usually involve a heater or a solar cover.
Email me when Coeur d'Alene hits the closing window
Data: NOAA 1991–2020 climate normals via Coeur D'alene (1.5 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.