Pool season · Missouri
Kansas City Pool Season: the Year on One Bar
Last updated: July 15, 2026 · dates · water temp
One bar, one year, one Kansas City 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.
The bar compresses Kansas City's whole pool year into one lane rope: gray floats for the off-season, hollow teal for the April 9–April 30 opening window, solid teal for swim weeks, hollow amber for the closing stretch that ends October 20. Wherever the today marker sits, the nearest color change is your next appointment.
The Kansas City pool calendar
Opening — target April 16
Open by April 16 — a two-week head start on the April 30 crossing keeps startup chemistry small and beats the local service rush.
Closing — deadline October 20
The window opens October 10 once water leaves the algae zone; the model deadline is October 20, a week ahead of the November 2 freeze normal.
Estimated water temperature by month
This is Kansas City'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° | 33° | 42° | 52° | 62° | 73° | 80° | 81° | 75° | 65° | 51° | 40° |
Warmest water typically July–August (peaking near 81°F); heaters and covers shift any month up.
Email me when Kansas City hits the closing window
Data: NOAA 1991–2020 climate normals via Kansas City Downtown Airport (2.3 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.