Pool closing · Louisiana
When to Close Your Pool in Shreveport, LA: Deadline, Window & Checklist
Last updated: July 15, 2026 · Model window year: 2026 · dates · checklist · FAQ
Two dates decide a Shreveport closing: November 1, when the 7-day mean drops back through 61°F and the water goes algae-quiet, and November 11, the model deadline set a safe week ahead of the November 18 first-freeze normal. Everything on this page — live water estimate, window, winterizing sequence — exists to land you between them.
Shreveport closing dates at a glance
| Closing window | November 1 – November 11 |
|---|---|
| Close by (deadline) | November 11 |
| First freeze, 50% probability | November 18 |
| Open by (recommended) | March 10 |
| Opening window | March 3 – March 24 |
| 61°F crossing (7-day mean) | March 24 |
| Swim-season length (80°F+ days) | 170 days |
| NOAA normals station | Shreveport · 2.9 mi · 273 ft |
A classic four-season pool calendar: open early into cold water, close late into cold water, and Shreveport's 170 days of prime swimming sit safely in between.
Four water checkpoints anchor Shreveport's year in the model: mid-April at about 64°F, mid-June at 80°F, mid-August near the 84°F peak zone, and mid-October easing through 70°F. The dates in the table are where those numbers cross the thresholds that matter.
The 12-step Shreveport 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
Give the chemistry a head start — balance to label ranges several days out, while circulation can still mix corrections evenly. Closing-day dosing never distributes as well.
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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
Send the filter into winter clean: backwash the sand or DE, rinse and dry the cartridges indoors. Media stored dirty over winter hardens into a spring problem no backwash fixes.
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Apply winter chemicals per label
Winter chemicals go in before shutdown, not after: label-dosed, circulated for a few hours, distributed evenly. A floater dropped on still water protects one corner.
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Lower the water level
Check the cover manufacturer's spec before touching the hose: solid covers typically want water below the skimmer mouth, mesh often barely lower than normal. Full draining is off the table entirely.
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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
Any line you can't prove is dry gets pool-grade antifreeze at the label's rate per foot. Automotive antifreeze is toxic in this context — pool-rated only, always.
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Drain the equipment
Open every drain plug on the pump, filter, heater, and chlorinator, and store the plugs in the pump basket so spring reassembly is a one-stop hunt. Move what you can indoors.
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Set the air pillow and cover
Pillow first, cover second, tension last. A properly centered pillow turns the winter ice sheet from a wall-pressing ram into a harmless dome.
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Shut down the heater carefully
Follow the manufacturer's winterizing sequence for your heater — drain it fully and, for gas units, close the supply valve. Heat exchangers are the most expensive freeze casualty on the pad.
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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
Every item below sells out somewhere in Louisiana every November. Stocking the short list before the rush costs nothing extra and saves the mid-project store run — the chemicals guide explains what each category actually does.
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Cover pump
Solid covers collect rain all winter; this is the drainage plan.
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Expansion plugs + skimmer guard
Cheap rubber that stands between ice and your fittings.
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Pool antifreeze
Backup for unverifiable lines; label rate per foot of pipe.
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Winter closing kit
Season-length winter chemicals in one label-dosed box.
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Air pillow
A soft target for the ice sheet, centered under the cover.
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Winter cover
Sized to overlap; the cheapest insurance the pool wears all winter.
How Shreveport compares locally
Statewide context: across the 13 Louisiana cities we model, Shreveport's November 11 deadline sits in the latest quarter. Nearby, Longview (56 mi) closes around November 13 and Texarkana (70 mi) around November 4 — treat gaps under a week as microclimate noise, not strategy. Spring planning restarts at the opening guide; the Shreveport pool season page keeps the whole year in one view.
The measuring stick here is Shreveport — 2.9 miles to the west, elevation about 273 feet. Its 1991–2020 record is what the model reads for Shreveport; your backyard in Caddo 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 Shreveport owners
The warm spell after you closed
A 78°F week in October doesn't mean reopening. Water under an opaque cover warms far less than air suggests, and a closed, balanced pool tolerates a warm stretch fine. Check the cover pump has somewhere to send rain, enjoy the weather, and leave the plumbing sealed.
Blowout first, antifreeze second
Air is the only guaranteed freeze protection: a line that's verifiably dry cannot burst. Antifreeze (pool-grade, per label) is the fallback for lines you can't confirm — long runs, low spots, water-feature plumbing. Doing antifreeze instead of a blowout, rather than in addition, is how most cracked returns happen.
Match the drainage plan to the cover
Solid covers shed nothing — they need a cover pump staged before the first storm and checked after each one. Mesh covers drain themselves but pass silt that settles all winter. Either way, the plan is decided in October, not improvised in January when the cover is an ice sheet.
Shreveport pool closing FAQ
What temperature should water be to close a pool?
Close once water holds below about 65°F — the point where algae go mostly dormant — and before hard freezes. In Shreveport, the 7-day mean drops through the threshold around November 1, so the window between then and November 11 is the sweet spot for a clean, stable close.
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 Shreveport's water cool through the mid-60s°F — around November 1 by our model — then close inside the window that ends November 11.
Do I need antifreeze in pool lines?
Treat antifreeze as a backup, not a substitute: the real protection is air in dry lines. Where a full blowout isn't possible, pool-grade antifreeze per label is cheap insurance against a cracked pipe — worth it anywhere freezes are routine, and Shreveport sees them from about November 18.
How far should I drain my pool for winter?
Only to the line your cover manufacturer prints — a few inches below the skimmer for most solid covers, close to operating level for many mesh designs with the skimmer plugged. The water you leave in is structural: it holds the shell against groundwater all winter.
What happens if you don't winterize a pool?
Two failure modes. Where freezes reach the plumbing, expansion cracks pumps, filters, and fittings from the inside. Where they don't, an unwatched pool simply drifts green and unbalanced by spring. Shreveport has no published freeze normal to pin the date, so the winterizing above plus forecast-watching covers both risks.
When is the last safe date to close in Shreveport?
Treat November 11 as the deadline in Shreveport. It's derived from the 1991–2020 normals: a week of margin before the November 18 first-freeze normal. Weather varies year to year, so watch the 10-day forecast in late November — an early cold snap moves the real deadline, and the widget above flags exactly that.
Email me when Shreveport hits the closing window
Data: NOAA 1991–2020 climate normals via Shreveport (2.9 mi); live outlook by Open-Meteo. Full attribution on the sources page. Model assumptions and error bars on methodology.