Pool season · Kansas
Overland Park Pool Season: the Year on One Bar
Last updated: July 15, 2026 · dates · water temp
Overland Park's whole pool calendar, condensed: when the water warms, when it cools, and where today falls between those edges. Use the opening guide and closing guide for the step-by-step work; keep this page for the dates.
Each dot on the bar is one week of Overland Park'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 15. The black marker is today — its position against the colors is the entire executive summary.
The Overland Park pool calendar
Opening — target April 22
Open by April 22 — a two-week head start on the May 6 crossing keeps startup chemistry small and beats the local service rush.
Closing — deadline October 15
Hold the cover until October 5, then winterize by October 15, a week ahead of the October 29 freeze normal. Late and cold beats early and warm.
Estimated water temperature by month
This is Overland Park'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° | 31° | 40° | 51° | 60° | 70° | 77° | 78° | 73° | 62° | 50° | 38° |
Warmest water typically August–August (peaking near 79°F); heaters and covers shift any month up.
Email me when Overland Park hits the closing window
Data: NOAA 1991–2020 climate normals via Olathe Johnson Co Executive Airport (3.8 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.