Pool season · Kansas
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.
Reading it takes ten seconds: 52 dots, one per week. Solid teal is Kansas City's swim season; the hollow teal run before it (April 9 to April 30) is when to open; the hollow amber run after is when to close, with October 20 as the deadline; gray is the covered season. Today's marker shows where you stand in that cycle right now.
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
Monthly averages of the site's water model run on Kansas City'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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 (7.9 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.