Pool season · Utah
Salt Lake City Pool Season: the Year on One Bar
Last updated: July 25, 2026 · dates · water temp
One bar, one year, one Salt Lake City pool. The season bar below draws everything the model knows — opening window, prime season, closing window — against today's date, with the working details one click away on the opening and closing pages.
Salt Lake City, UT — 101 swim days a yearEach dot on the bar is one week of Salt Lake City'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 22–May 13), solid teal is swim season, and hollow amber is the closing window ending October 14. The black marker is today — its position against the colors is the entire executive summary.
The Salt Lake City pool calendar
Opening — target April 29
Target April 29; the practical window runs April 22–May 13, and the 7-day mean crosses the 61°F threshold around May 13. Cold-water starts are the cheap ones.
Closing — deadline October 14
Hold the cover until October 4, then winterize by October 14, a week ahead of the November 8 freeze normal. Late and cold beats early and warm.
Estimated water temperature by month
This is Salt Lake City'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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 33° | 36° | 44° | 51° | 58° | 68° | 77° | 81° | 74° | 63° | 50° | 38° |
Warmest water typically August–August (peaking near 82°F); heaters and covers shift any month up.
Every station tells its own story: compare this curve with Provo's pool season and Sandy's — neighboring normals stations can shift the windows by a week or more. The full ranking lives on the Utah season index.
Salt Lake City pool season FAQ
When should I open my pool in Salt Lake City, UT?
The site model recommends opening by April 29 — about two weeks before Salt Lake City'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 Salt Lake City opening guide.
When should I close my pool in Salt Lake City?
Winterize by October 14. The model holds the deadline a week ahead of Salt Lake City's NOAA 50% first-freeze date, so the plumbing is protected before the first hard night. The full sequence is in the Salt Lake City closing guide.
How long is the swim season in Salt Lake City?
Salt Lake City averages 101 days a year with normal highs of 80°F or better — right on the statewide median. The Utah season index ranks all 12 covered cities by the same metric.
How warm does pool water get in Salt Lake City?
An unheated pool near Salt Lake City typically peaks around 82°F in high summer and bottoms out near 33°F in winter, spending roughly 1 month 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 Salt Lake City hits the closing window
Data: NOAA 1991–2020 climate normals via Salt Lake Triad Center (1.9 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.