Pool closing · State guide
When to Close Your Pool in Kansas
Last updated: July 25, 2026 · 6 cities covered
Closing deadlines across Kansas stretch about 6 days: Overland Park needs the cover on first (October 15), Wichita last (October 21), and the statewide median deadline is October 16.
Each deadline is the model's two-clock compromise — ten days after the water leaves the algae zone, capped a week before the local 50% first-freeze date. City pages carry the live widget that flags early-freeze years and the full winterizing sequence.
| City | Window opens | Close by | First freeze (50%) |
|---|---|---|---|
| Kansas City | Oct 10 | Oct 20 | Nov 2 |
| Lawrence | Oct 6 | Oct 16 | Oct 28 |
| Olathe | Oct 6 | Oct 16 | Oct 29 |
| Overland Park | Oct 5 | Oct 15 | Oct 29 |
| Topeka | Oct 6 | Oct 15 | Oct 22 |
| Wichita | Oct 11 | Oct 21 | Oct 29 |
Dates are typical-year model outputs, not forecasts — each city guide carries the live widget that tracks the current year against them.
How to use these dates
Each "close by" deadline is the model's two-clock compromise for that city: ten days after its 7-day mean temperature falls back through 61°F (water goes algae-dormant soon after), but never later than a week before its 50% first-freeze date from the NOAA 1991–2020 normals. Closing inside the window seals cold, stable water under the cover; closing early seals a warm algae incubator instead.
Treat the dates as typical-year guidance, not forecasts. An early cold snap moves the real deadline — each city guide runs a live water-temperature widget that flags a 32°F night inside the 10-day forecast as urgent, and carries the full winterizing checklist in working order.
What drives Kansas's closing deadlines
Scorching Plains summers make Kansas pools popular from late May onward, but the state's famous spring severe weather (hail, high winds, tornadoes) makes sturdy covers and flexible openings wise. Wichita holds the state's latest deadline (October 21), and the Kansas season index lists every other city's.