Pool season · Minnesota
Lakeville Pool Season: the Year on One Bar
Last updated: July 25, 2026 · dates · water temp
Lakeville'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.
Lakeville, MN — 48 swim days a yearReading it takes ten seconds: 52 dots, one per week. Solid teal is Lakeville's swim season; the hollow teal run before it (May 3 to May 24) is when to open; the hollow amber run after is when to close, with September 29 as the deadline; gray is the covered season. Today's marker shows where you stand in that cycle right now.
The Lakeville pool calendar
Opening — target May 10
Open by May 10 — a two-week head start on the May 24 crossing keeps startup chemistry small and beats the local service rush.
Closing — deadline September 29
The window opens September 19 once water leaves the algae zone; the model deadline is September 29, a week ahead of the October 10 freeze normal.
Estimated water temperature by month
Monthly averages of the site's water model run on Lakeville'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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 17° | 17° | 27° | 40° | 53° | 64° | 71° | 71° | 66° | 56° | 41° | 27° |
The curve peaks near 72°F — comfortable-water months here usually involve a heater or a solar cover.
Every station tells its own story: compare this curve with Duluth's pool season and Minneapolis's — neighboring normals stations can shift the windows by a week or more. The full ranking lives on the Minnesota season index.
Lakeville pool season FAQ
When should I open my pool in Lakeville, MN?
Target May 10. That date backs off two weeks from the day Lakeville's 7-day mean temperature reaches 61°F, so you start up in cold, algae-resistant water. Work the full checklist in the Lakeville opening guide.
When should I close my pool in Lakeville?
The closing deadline is September 29 — late enough that the water has cooled out of the algae zone, early enough to beat Lakeville's first-freeze normal by about a week. See the Lakeville closing guide for the winterizing steps.
How long is the swim season in Lakeville?
Lakeville averages 48 days a year with normal highs of 80°F or better — right on the statewide median. The Minnesota season index ranks all 10 covered cities by the same metric.
How warm does pool water get in Lakeville?
An unheated pool near Lakeville typically peaks around 72°F in high summer and bottoms out near 15°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 Lakeville hits the closing window
Data: NOAA 1991–2020 climate normals via Farmington 3 NW (4.0 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.