Pool season · Virginia
Fredericksburg Pool Season: the Year on One Bar
Last updated: July 15, 2026 · dates · water temp
This is the one-page view of Fredericksburg'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.
Each dot on the bar is one week of Fredericksburg'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 11–May 2), solid teal is swim season, and hollow amber is the closing window ending October 18. The black marker is today — its position against the colors is the entire executive summary.
The Fredericksburg pool calendar
Opening — target April 18
Open by April 18 — a two-week head start on the May 2 crossing keeps startup chemistry small and beats the local service rush.
Closing — deadline October 18
The window opens October 8 once water leaves the algae zone; the model deadline is October 18, a week ahead of the November 1 freeze normal.
Estimated water temperature by month
Monthly averages of the site's water model run on Fredericksburg'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° | 36° | 42° | 51° | 61° | 70° | 77° | 78° | 73° | 64° | 52° | 43° |
Warmest water typically August–August (peaking near 78°F); heaters and covers shift any month up.
Email me when Fredericksburg hits the closing window
Data: NOAA 1991–2020 climate normals via Fredericksburg Sewage (2.1 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.