Pool season · Indiana
Muncie Pool Season: the Year on One Bar
Last updated: July 15, 2026 · dates · water temp
One bar, one year, one Muncie 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.
Each dot on the bar is one week of Muncie's typical year, colored by what the model says that week is for: gray weeks are off-season, hollow teal marks the opening window (April 15–May 6), solid teal is swim season, and hollow amber is the closing window ending October 12. The black marker is today — its position against the colors is the entire executive summary.
The Muncie pool calendar
Opening — target April 22
Target April 22; the practical window runs April 15–May 6, and the 7-day mean crosses the 61°F threshold around May 6. Cold-water starts are the cheap ones.
Closing — deadline October 12
The window opens October 2 once water leaves the algae zone; the model deadline is October 12, a week ahead of the October 25 freeze normal.
Estimated water temperature by month
This is Muncie'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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 30° | 29° | 37° | 48° | 60° | 70° | 76° | 75° | 71° | 61° | 50° | 38° |
The curve peaks near 76°F — comfortable-water months here usually involve a heater or a solar cover.
Email me when Muncie hits the closing window
Data: NOAA 1991–2020 climate normals via Muncie Delaware Co Airport (2.4 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.