Pool season · Louisiana
Monroe Pool Season: the Year on One Bar
Last updated: July 25, 2026 · dates · water temp
This is the one-page view of Monroe'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.
Monroe, LA — 167 swim days a yearThe bar compresses Monroe's whole pool year into one lane rope: gray floats for the off-season, hollow teal for the March 7–March 28 opening window, solid teal for swim weeks, hollow amber for the closing stretch that ends November 8. Wherever the today marker sits, the nearest color change is your next appointment.
The Monroe pool calendar
Opening — target March 14
Open by March 14 — a two-week head start on the March 28 crossing keeps startup chemistry small and beats the local service rush.
Closing — deadline November 8
The window opens October 29 once water leaves the algae zone; the model deadline is November 8, a week ahead of the November 15 freeze normal.
Estimated water temperature by month
Monthly averages of the site's water model run on Monroe'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° | 48° | 55° | 62° | 70° | 78° | 82° | 83° | 80° | 72° | 60° | 52° |
Warmest water typically June–September (peaking near 83°F); heaters and covers shift any month up.
Every station tells its own story: compare this curve with Metairie's pool season and New Orleans's — neighboring normals stations can shift the windows by a week or more. The full ranking lives on the Louisiana season index.
Monroe pool season FAQ
When should I open my pool in Monroe, LA?
The site model recommends opening by March 14 — about two weeks before Monroe's 7-day mean temperature crosses 61°F, while the water is still too cold for algae. The step-by-step sequence is in the Monroe opening guide.
When should I close my pool in Monroe?
Winterize by November 8. The model holds the deadline a week ahead of Monroe's NOAA 50% first-freeze date, so the plumbing is protected before the first hard night. The full sequence is in the Monroe closing guide.
How long is the swim season in Monroe?
Monroe averages 167 days a year with normal highs of 80°F or better — about 11 days later than the Louisiana median. The Louisiana season index ranks all 13 covered cities by the same metric.
How warm does pool water get in Monroe?
An unheated pool near Monroe typically peaks around 83°F in high summer and bottoms out near 47°F in winter, spending roughly 3 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 Monroe hits the closing window
Data: NOAA 1991–2020 climate normals via Monroe Regional Airport (2.2 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.