Pool season · State index
Nevada Pool Season 2026: Opening & Closing Dates by City
Last updated: July 25, 2026 · 9 cities covered
Both halves of the pool year for all 9 covered Nevada cities. The median calendar runs March 7 to November 14. Every row links to a one-page season overview with the live water-temperature model; the opening and closing hubs carry the full checklists.
Nevada: a long-season pool state| City | Open by | Close by | 80°F+ days |
|---|---|---|---|
| Enterprise | Mar 7 | Nov 13 | 186 |
| Henderson | Mar 3 | Nov 16 | 180 |
| Las Vegas | Mar 9 | Nov 14 | 177 |
| North Las Vegas | Mar 2 | Nov 17 | 194 |
| Paradise | Mar 3 | Nov 16 | 180 |
| Reno | May 9 | Oct 12 | 103 |
| Sparks | May 12 | Oct 3 | 114 |
| Spring Valley | Mar 7 | Nov 13 | 186 |
| Sunrise Manor | Mar 2 | Nov 17 | 194 |
What the columns mean
"Open by" is the recommended spring date — two weeks before the city's 7-day mean temperature crosses 61°F, the model's proxy for water approaching the 65°F algae-growth zone. "Close by" is the fall deadline — ten days after the water leaves that zone, capped a week ahead of the local 50% first-freeze date. "80°F+ days" counts days whose normal high reaches 80°F: the length of the true warm-swim season, and the fairest single number for comparing Nevada cities against each other.
Every figure comes from each city's own NOAA 1991–2020 normals station (named in its guide's footer), so neighboring cities can legitimately differ by a few days. The season overview linked from each row adds the live water-temperature model and the full-year season bar; the state hubs above carry the step-by-step checklists.
Swim-season length across Nevada
The fairest way to compare Nevada cities is the number of days with 80°F+ normal highs — the practical warm-swim season. Every bar links to that city's one-page season overview with the live water model.
Nevada pool climate at a glance
Southern desert heat gives Las Vegas one of the country's longest seasons, while high-desert Reno and the north face cold nights that shorten swimming dramatically. In model terms that makes Nevada a long-season state. The spread shows up clearly on the local pages: compare North Las Vegas's pool season with Henderson's and the difference is measured in weeks, not days. Neighbors in the index run on their own normals too — see Nebraska and New Hampshire for the adjacent calendars.
Nevada pool season FAQ
When do pools open in Nevada?
Model openings in Nevada run from March 2 in North Las Vegas to May 12 in Sparks, with the statewide median on March 7. Each date is two weeks before that city's 7-day mean temperature crosses 61°F — early enough to start up in algae-cold water.
When should you close a pool in Nevada?
The median Nevada closing deadline is November 14, and every city's own deadline is capped a week ahead of its NOAA 50% first-freeze date. Closing late and cold beats closing early and warm — cool water holds its winter chemistry far better.
Which Nevada city has the longest swim season?
North Las Vegas leads with 194 days of 80°F+ highs per year, while Reno brings up the rear at 103 days. The chart above ranks every covered city by the same metric.