Pool season · Texas
Longview Pool Season: the Year on One Bar
Last updated: July 25, 2026 · dates · water temp
Longview's whole pool calendar, condensed: when the water warms, when it cools, and where today falls between those edges. Use the opening guide and closing guide for the step-by-step work; keep this page for the dates.
Longview, TX — 172 swim days a yearReading it takes ten seconds: 52 dots, one per week. Solid teal is Longview's swim season; the hollow teal run before it (March 5 to March 26) is when to open; the hollow amber run after is when to close, with November 13 as the deadline; gray is the covered season. Today's marker shows where you stand in that cycle right now.
The Longview pool calendar
Opening — target March 12
Open by March 12 — a two-week head start on the March 26 crossing keeps startup chemistry small and beats the local service rush.
Closing — deadline November 13
Hold the cover until November 3, then winterize by November 13, a week ahead of the November 23 freeze normal. Late and cold beats early and warm.
Estimated water temperature by month
Monthly averages of the site's water model run on Longview'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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 47° | 49° | 55° | 63° | 70° | 79° | 83° | 85° | 82° | 73° | 62° | 52° |
Warmest water typically June–September (peaking near 85°F); heaters and covers shift any month up.
Every station tells its own story: compare this curve with Lewisville's pool season and Lubbock's — neighboring normals stations can shift the windows by a week or more. The full ranking lives on the Texas season index.
Longview pool season FAQ
When should I open my pool in Longview, TX?
Open by March 12 — the model places Longview's 61°F crossing about two weeks later, and every warm day you wait pushes the water toward the 65°F algae zone. The Longview opening guide has the 12-step sequence.
When should I close my pool in Longview?
Close by November 13: cool water keeps its winter chemistry, but freeze damage is the hard stop. The Longview closing guide sequences the work backward from that date.
How long is the swim season in Longview?
Longview averages 172 days a year with normal highs of 80°F or better — about 4 days later than the Texas median. The Texas season index ranks all 68 covered cities by the same metric.
How warm does pool water get in Longview?
An unheated pool near Longview typically peaks around 85°F in high summer and bottoms out near 47°F in winter, spending roughly 4 months 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 Longview hits the closing window
Data: NOAA 1991–2020 climate normals via Longview #2 (2.5 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.