Pool closing · Tennessee
When to Close Your Pool in Memphis, TN: Deadline, Window & Checklist
Last updated: July 15, 2026 · Model window year: 2026 · dates · checklist · FAQ
Plan to close your Memphis pool by November 3. The local 7-day mean temperature drops out of the algae-risk zone around October 24, and NOAA normals put the first 32°F freeze near November 16 — winterize between those dates and the water goes under the cover cold, clean, and easy to reopen. Below: today's water estimate, the full closing window, and a step-by-step winterizing checklist.
Memphis closing dates at a glance
| Closing window | October 24 – November 3 |
|---|---|
| Close by (deadline) | November 3 |
| First freeze, 50% probability | November 16 |
| Open by (recommended) | March 25 |
| Opening window | March 18 – April 8 |
| 61°F crossing (7-day mean) | April 8 |
| Swim-season length (80°F+ days) | 147 days |
| NOAA normals station | Memphis International Airport · 3.8 mi · 254 ft |
A classic four-season pool calendar: open early into cold water, close late into cold water, and Memphis's 147 days of prime swimming sit safely in between.
Four water checkpoints anchor Memphis's year in the model: mid-April at about 62°F, mid-June at 79°F, mid-August near the 83°F peak zone, and mid-October easing through 68°F. The dates in the table are where those numbers cross the thresholds that matter.
The 12-step Memphis winterizing checklist
Sequenced against Memphis's October 24–November 3 window: chemistry while the pump still runs, blowouts before the equipment drains, cover last. Labels dictate every dose.
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Balance the water a few days ahead
Three or four days before closing, adjust alkalinity and pH into label ranges. Balanced water is gentler on the liner, plaster, and equipment through the long covered months ahead.
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Deep-clean the pool
Leave nothing organic behind: skim the surface, brush every wall and step, vacuum the floor slowly. What goes under the cover dirty comes out worse — winter only ever compounds what it's given.
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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
Dose the winter kit while the pump still runs — every product exactly per its label for your volume — so the chemistry is fully mixed before the system goes quiet.
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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
Air through every line — skimmer, returns, cleaner — until each blows dry mist, plugging returns while the air still pushes. Nothing else on this list protects as much plumbing per minute.
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Protect the skimmer
The skimmer throat is where trapped water has no escape — park a guard bottle or rated plug in it and let ice crush the cheap part.
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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 the drains on everything that holds water and let the pad empty completely. Cartridges and small equipment overwinter far better on a garage shelf than outside.
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Set the air pillow and cover
Center an inflated air pillow, then fit the cover and secure it with water bags, cable, or straps as designed. The pillow gives ice a place to push besides your walls.
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Note this year's dates
Jot down when Memphis's water actually cooled and when you closed. A two-line note beats memory next October 24 — your own yard runs a few days off any model, including ours.
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Remove and store ladders and rails
Pull ladders, rails, and the diving-board hardware; rinse, dry, and store them out of the weather. Anchor sockets get a dab of protectant so spring bolts turn freely.
What to buy before the rush
The October crowd empties shelves in a predictable order. This is the short list worth owning before Memphis's window opens — nothing exotic, just the stuff everyone needs the same weekend.
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Winter cover
Sized to overlap; the cheapest insurance the pool wears all winter.
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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.
How Memphis compares locally
Statewide context: across the 14 Tennessee cities we model, Memphis's November 3 deadline sits in the earliest quarter. Nearby, Jonesboro (64 mi) closes around October 28 and Jackson (74 mi) around October 22 — treat gaps under a week as microclimate noise, not strategy. Spring planning restarts at the opening guide; the Memphis pool season page keeps the whole year in one view.
Every number on this page traces to one instrument cluster: Memphis International Airport, 3.8 miles south of Memphis's center at an elevation near 254 feet. NOAA computed its 1991–2020 normals from roughly three decades of daily readings — long enough that one strange spring in Shelby County barely moves the dates.
Field notes for Memphis owners
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.
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.
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.
Memphis 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 Memphis, the 7-day mean drops through the threshold around October 24, so the window between then and November 3 is the sweet spot for a clean, stable close.
Can you close a pool too early?
Early closing is the mistake the whole model is built to prevent from the other direction. A cover installed over 70°F water is a terrarium: sanitizer decays, algae compound, nobody looks for months. Memphis's water isn't reliably out of that zone until about October 24 — the calendar's first cold weekend doesn't change that.
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 Memphis's first freeze normal near November 16, don't leave that question open.
How far should I drain my pool for winter?
Less than most people think. Below the skimmer opening is the classic solid-cover target; mesh covers often specify higher water. The cover's own manual wins every argument, and "drain it completely" is never the answer — empty shells pop out of wet ground.
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. Memphis 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 Memphis?
November 3, by our model — the cool-down plus ten days (the freeze normal, November 16, 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 Memphis's first freeze-risk stretch.
Email me when Memphis hits the closing window
Data: NOAA 1991–2020 climate normals via Memphis International Airport (3.8 mi); live outlook by Open-Meteo. Full attribution on the sources page. Model assumptions and error bars on methodology.