Pool closing · Louisiana
When to Close Your Pool in Kenner, LA: Deadline, Window & Checklist
Last updated: July 15, 2026 · Model window year: 2026 · dates · checklist · FAQ
Circle November 30 on the Kenner calendar. Closing earlier traps warm, algae-friendly water under the cover; closing later gambles the plumbing against the first freeze, which the 1991–2020 normals place near December 31. The window opens November 20 — the live widget below shows how this year is actually tracking against it.
Kenner closing dates at a glance
| Closing window | November 20 – November 30 |
|---|---|
| Close by (deadline) | November 30 |
| First freeze, 50% probability | December 31 |
| Open by (recommended) | February 16 |
| Opening window | February 9 – March 2 |
| 61°F crossing (7-day mean) | March 2 |
| Swim-season length (80°F+ days) | 179 days |
| NOAA normals station | New Orleans International Airport · 1.2 mi · 4 ft |
Kenner's 179-day warm season leaves comfortable margins on both ends — the windows above aim you at the cheap-chemistry versions of each transition.
The same model in water terms: Kenner's estimated pool temperature runs about 69°F in mid-April, 82°F in mid-June, 84°F in mid-August, and 75°F in mid-October, peaking near 84°F. Those four checkpoints — not any calendar holiday — are what the windows above are protecting.
The 12-step Kenner winterizing checklist
The order matters more than the date: balanced water first, verified-dry lines before anything else freezes-proofs, and the cover only after everything below it is done. Work the list inside the window above.
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Balance the water a few days ahead
Do the chemistry midweek, close on the weekend: alkalinity and pH into label ranges with days of circulation left to spread them. Winter locks in whatever state the water holds on closing day.
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Deep-clean the pool
Brush, skim, and vacuum like company's coming. A pool that goes under the cover spotless comes out needing a rinse; one that goes under dirty comes out needing a project.
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Service the filter one last time
Backwash sand or DE, or pull and rinse cartridges, per the manual. A filter stored dirty cakes over winter and starts spring half-clogged.
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Apply winter chemicals per label
Add a winterizing kit or your usual closing chemicals exactly as their labels direct for your volume, with the pump still circulating so everything distributes before shutdown.
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Lower the water level
Your cover's manual sets the number — commonly a few inches under the skimmer for solid covers, barely below normal for mesh. Stop there. The remaining water isn't laziness; it's ballast holding the shell in the ground.
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Blow out the lines and plug returns
The blowout is the whole ballgame: drive air through each line until it runs dry, seat the plug against the airflow, move to the next. A dry line cannot burst, full stop.
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Protect the skimmer
Install a skimmer guard bottle (or a plug rated for your skimmer) so ice that forms there crushes the sacrificial piece instead of cracking the skimmer body.
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Add pool antifreeze where blowouts fall short
If any line can't be verified dry, add pool-grade antifreeze per its label. Use only pool antifreeze — automotive products don't belong in pool plumbing.
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Drain the equipment
Nothing on the pad should hold water overnight: pull the drain plugs from pump, filter, heater, and feeder, stash them all in the pump basket, and carry the portable pieces indoors.
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Set the air pillow and cover
Inflate the pillow to about two-thirds, center it, then bring the cover over and secure it per its design. Under ice, that soft dome is the difference between inward compression and outward wall pressure.
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Note this year's dates
Jot down when Kenner's water actually cooled and when you closed. A two-line note beats memory next November 20 — your own yard runs a few days off any model, including ours.
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Winterize the water features
Waterfalls, slides, and spillover spas hold water in places gravity won't clear — blow those lines separately and plug them, or they'll be the one crack you find in spring.
What to buy before the rush
A small stack of supplies turns the checklist above into a single-weekend job. Buy before Kenner's November rush and the whole list ships at leisure instead of sprinting.
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Winter cover
The one purchase every other closing step depends on.
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Cover pump
Standing water is a cover killer; this is the counter.
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Expansion plugs + skimmer guard
Cheap rubber that stands between ice and your fittings.
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Pool antifreeze
Pool-rated glycol for the lines air couldn't clear.
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Winter closing kit
Closing chemistry in one box, dosed by pool volume.
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Air pillow
Gives ice somewhere to push besides your pool walls.
How Kenner compares locally
Statewide context: across the 13 Louisiana cities we model, Kenner's November 30 deadline sits in the earliest quarter. Nearby, Metairie (5 mi) closes around November 30 and New Orleans (20 mi) around December 2 — treat gaps under a week as microclimate noise, not strategy. Spring planning restarts at the opening guide; the Kenner pool season page keeps the whole year in one view.
The measuring stick here is New Orleans International Airport — 1.2 miles to the south, elevation about 4 feet. Its 1991–2020 record is what the model reads for Kenner; your backyard in Jefferson County will run a touch warmer or cooler with shade, wind, and pavement, which is exactly the slack the two-week lead absorbs.
Field notes for Kenner owners
The mesh-cover spring surprise, prevented in fall
Mesh-covered pools green up early because late-winter sun plus nutrient-carrying meltwater reaches the water. The fall counter-moves: close late and cold, dose the winter kit exactly per label, and plan an early-spring peek under the cover rather than a Memorial Day reveal.
Cover pumps die in the cold — plan for it
A cover pump left running into a hard freeze can lock in ice and burn out. On freezing forecasts, pull it, let the storm pass, and put it back for the melt. Automatic models with freeze protection earn their price in exactly one forgotten weekend.
Leaf season vs closing day
If your yard drops serious leaves, the cheap trick is a leaf net over the main cover through the drop, then one bulk removal before snow. Leaves that winter on (or worse, under) the cover steep like tea and hand you stained water and clogged pumps in spring.
Don't close a pool people are still using
With Kenner's long season, the question isn't "is it November?" but "has the water actually cooled?" The window running to November 30 exists because warm-water closings breed spring algae. If swimmers keep showing up through November, let them — patience here is free maintenance.
Kenner pool closing FAQ
What temperature should water be to close a pool?
Cold enough that biology has clocked out — below 65°F and falling, ideally low 60s. The widget above tracks Kenner's actual water; the normals say the durable cool-down arrives near November 20, and anything inside the window to November 30 closes clean.
Can you close a pool too early?
You can, and warm-water closings are why "we opened to a swamp" stories exist. The fix is patience: let Kenner's water cool through the mid-60s°F — around November 20 by our model — then close inside the window that ends November 30.
Do I need antifreeze in pool lines?
Only where water might remain. If every line is properly blown out and plugged, air is the antifreeze. Lines you can't verify dry — long runs, low spots, water features — get pool-grade antifreeze dosed per its label. With Kenner's first freeze normal near December 31, don't leave that question open.
How far should I drain my pool for winter?
Follow the cover's instructions first: solid covers usually want water a few inches below the skimmer; some mesh setups run higher with the skimmer sealed. The hard rule is never empty — hydrostatic pressure can lift or crack an empty pool, a far worse outcome than any freeze.
What happens if you don't winterize a pool?
The freeze finds every shortcut. Ice in an unprotected pump or heater cracks castings from the inside; ice in underground lines splits fittings you can't see until spring. Kenner reaches freeze territory around December 31 — the checklist above is cheaper than any one of those repairs.
When is the last safe date to close in Kenner?
November 30, by our model — the cool-down plus ten days (the freeze normal, December 31, leaves room to spare). Later closes happen, but they happen in gloves. The winterizing steps above take a weekend; leave yourself at least that much runway before Kenner's first freeze-risk stretch.
Email me when Kenner hits the closing window
Data: NOAA 1991–2020 climate normals via New Orleans International Airport (1.2 mi); live outlook by Open-Meteo. Full attribution on the sources page. Model assumptions and error bars on methodology.