Pool season · Virginia
Fredericksburg Pool Season: the Year on One Bar
Last updated: July 25, 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.
Fredericksburg, VA — 108 swim days a yearEach 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.
Every station tells its own story: compare this curve with Chesapeake's pool season and Hampton's — neighboring normals stations can shift the windows by a week or more. The full ranking lives on the Virginia season index.
Fredericksburg pool season FAQ
When should I open my pool in Fredericksburg, VA?
Target April 18. That date backs off two weeks from the day Fredericksburg's 7-day mean temperature reaches 61°F, so you start up in cold, algae-resistant water. Work the full checklist in the Fredericksburg opening guide.
When should I close my pool in Fredericksburg?
The closing deadline is October 18 — late enough that the water has cooled out of the algae zone, early enough to beat Fredericksburg's first-freeze normal by about a week. See the Fredericksburg closing guide for the winterizing steps.
How long is the swim season in Fredericksburg?
Fredericksburg averages 108 days a year with normal highs of 80°F or better — about 8 days later than the Virginia median. The Virginia season index ranks all 16 covered cities by the same metric.
How warm does pool water get in Fredericksburg?
An unheated pool near Fredericksburg typically peaks around 78°F in high summer and bottoms out near 36°F in winter, never quite reaching the 78°F comfort line without a heater or solar cover. The month-by-month curve above shows the whole cycle; the methodology page explains the ±5°F error bars.
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.