Pool season · Arkansas
Fayetteville Pool Season: the Year on One Bar
Last updated: July 25, 2026 · dates · water temp
One bar, one year, one Fayetteville 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.
Fayetteville, AR — 113 swim days a yearEach dot on the bar is one week of Fayetteville'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 6–April 27), solid teal is swim season, and hollow amber is the closing window ending October 21. The black marker is today — its position against the colors is the entire executive summary.
The Fayetteville pool calendar
Opening — target April 13
Open by April 13 — a two-week head start on the April 27 crossing keeps startup chemistry small and beats the local service rush.
Closing — deadline October 21
The window opens October 11 once water leaves the algae zone; the model deadline is October 21, a week ahead of the October 31 freeze normal.
Estimated water temperature by month
Monthly averages of the site's water model run on Fayetteville'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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 37° | 38° | 45° | 54° | 62° | 71° | 78° | 79° | 75° | 65° | 53° | 43° |
Warmest water typically July–August (peaking near 79°F); heaters and covers shift any month up.
Every station tells its own story: compare this curve with Conway's pool season and Fort Smith's — neighboring normals stations can shift the windows by a week or more. The full ranking lives on the Arkansas season index.
Fayetteville pool season FAQ
When should I open my pool in Fayetteville, AR?
Open by April 13 — the model places Fayetteville's 61°F crossing about two weeks later, and every warm day you wait pushes the water toward the 65°F algae zone. The Fayetteville opening guide has the 12-step sequence.
When should I close my pool in Fayetteville?
Close by October 21: cool water keeps its winter chemistry, but freeze damage is the hard stop. The Fayetteville closing guide sequences the work backward from that date.
How long is the swim season in Fayetteville?
Fayetteville averages 113 days a year with normal highs of 80°F or better — about 6 days later than the Arkansas median. The Arkansas season index ranks all 7 covered cities by the same metric.
How warm does pool water get in Fayetteville?
An unheated pool near Fayetteville typically peaks around 79°F in high summer and bottoms out near 37°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 Fayetteville hits the closing window
Data: NOAA 1991–2020 climate normals via Fayetteville Experiment Station (2.1 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.