Pool season · Oklahoma
Norman Pool Season: the Year on One Bar
Last updated: July 25, 2026 · dates · water temp
This is the one-page view of Norman'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.
Norman, OK — 131 swim days a yearReading it takes ten seconds: 52 dots, one per week. Solid teal is Norman's swim season; the hollow teal run before it (March 31 to April 21) is when to open; the hollow amber run after is when to close, with October 27 as the deadline; gray is the covered season. Today's marker shows where you stand in that cycle right now.
The Norman pool calendar
Opening — target April 7
Open by April 7 — a two-week head start on the April 21 crossing keeps startup chemistry small and beats the local service rush.
Closing — deadline October 27
The window opens October 18 once water leaves the algae zone; the model deadline is October 27, a week ahead of the November 3 freeze normal.
Estimated water temperature by month
This is Norman'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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 39° | 40° | 47° | 56° | 64° | 74° | 80° | 82° | 78° | 67° | 56° | 45° |
Warmest water typically July–September (peaking near 82°F); heaters and covers shift any month up.
Every station tells its own story: compare this curve with Lawton's pool season and Oklahoma City's — neighboring normals stations can shift the windows by a week or more. The full ranking lives on the Oklahoma season index.
Norman pool season FAQ
When should I open my pool in Norman, OK?
The site model recommends opening by April 7 — about two weeks before Norman'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 Norman opening guide.
When should I close my pool in Norman?
Winterize by October 27. The model holds the deadline a week ahead of Norman's NOAA 50% first-freeze date, so the plumbing is protected before the first hard night. The full sequence is in the Norman closing guide.
How long is the swim season in Norman?
Norman averages 131 days a year with normal highs of 80°F or better — right on the statewide median. The Oklahoma season index ranks all 6 covered cities by the same metric.
How warm does pool water get in Norman?
An unheated pool near Norman typically peaks around 82°F in high summer and bottoms out near 39°F in winter, spending roughly 2 months at or above the 78°F comfort line most swimmers prefer. The month-by-month curve above shows the whole cycle; the methodology page explains the ±5°F error bars.
Email me when Norman hits the closing window
Data: NOAA 1991–2020 climate normals via Norman 3sse (6.3 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.