Utah Pool Season: Opening & Closing Dates by City

Local dates for every featured Utah city — when the water warms up, when it cools off, and how long the season actually lasts.

City Opening window Closing window Season
Salt Lake City May 15 – Jun 3 Sep 17 – Oct 2 ≈ 123 days
St. George Apr 20 – May 8 Oct 4 – Oct 18 ≈ 165 days
Logan Jun 9 – Jul 1 Aug 23 – Sep 11 ≈ 74 days

Windows show the stretch when each city's daily average passes through the low-to-mid 60s°F (1991–2020 NOAA records, nearest station to each city). Click a city for its month-by-month table and full season notes.

Season geography

Across Utah's featured cities, typical openings spread from Apr 29 to Jun 20, closings from Sep 2 to Oct 11, and the unheated season runs 74–165 days depending on where you are. Elevation, coastal water, and urban heat all pull real dates around, which is exactly why a state-level answer isn't enough.

For your exact town, the pool season lookup takes a ZIP code. Opening day itself is a chemistry job — the dosing calculator turns your first test reading of the year into exact amounts.

Utah planning pages

When to open — Utah When to close — Utah All states →