Pool season · Wisconsin
Kenosha Pool Season: the Year on One Bar
Last updated: July 25, 2026 · dates · water temp
This is the one-page view of Kenosha's pool year: both model windows, the estimated water-temperature curve, and today's live position on the season bar. The detailed checklists live on the opening and closing guides; this page is the calendar you check between them.
Kenosha, WI — 71 swim days a yearThe bar compresses Kenosha's whole pool year into one lane rope: gray floats for the off-season, hollow teal for the May 4–May 25 opening window, solid teal for swim weeks, hollow amber for the closing stretch that ends October 4. Wherever the today marker sits, the nearest color change is your next appointment.
The Kenosha pool calendar
Opening — target May 11
Target May 11; the practical window runs May 4–May 25, and the 7-day mean crosses the 61°F threshold around May 25. Cold-water starts are the cheap ones.
Closing — deadline October 4
Hold the cover until September 24, then winterize by October 4, a week ahead of the October 19 freeze normal. Late and cold beats early and warm.
Estimated water temperature by month
Monthly averages of the site's water model run on Kenosha'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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 26° | 24° | 32° | 42° | 53° | 64° | 71° | 72° | 68° | 58° | 46° | 34° |
The curve peaks near 73°F — comfortable-water months here usually involve a heater or a solar cover.
Every station tells its own story: compare this curve with Green Bay's pool season and La Crosse's — neighboring normals stations can shift the windows by a week or more. The full ranking lives on the Wisconsin season index.
Kenosha pool season FAQ
When should I open my pool in Kenosha, WI?
The site model recommends opening by May 11 — about two weeks before Kenosha's 7-day mean temperature crosses 61°F, while the water is still too cold for algae. The step-by-step sequence is in the Kenosha opening guide.
When should I close my pool in Kenosha?
Winterize by October 4. The model holds the deadline a week ahead of Kenosha's NOAA 50% first-freeze date, so the plumbing is protected before the first hard night. The full sequence is in the Kenosha closing guide.
How long is the swim season in Kenosha?
Kenosha averages 71 days a year with normal highs of 80°F or better — right on the statewide median. The Wisconsin season index ranks all 11 covered cities by the same metric.
How warm does pool water get in Kenosha?
An unheated pool near Kenosha typically peaks around 73°F in high summer and bottoms out near 24°F in winter, never quite reaching the 78°F comfort line without a heater or solar cover. The month-by-month curve above shows the whole cycle; the methodology page explains the ±5°F error bars.
Email me when Kenosha hits the closing window
Data: NOAA 1991–2020 climate normals via Kenosha Regional Airport (3.2 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.