Pool closing · Virginia
When to Close Your Pool in Richmond, VA: Deadline, Window & Checklist
Last updated: July 15, 2026 · Model window year: 2026 · dates · checklist · FAQ
Two dates decide a Richmond closing: October 12, when the 7-day mean drops back through 61°F and the water goes algae-quiet, and October 22, the model deadline set a safe week ahead of the November 4 first-freeze normal. Everything on this page — live water estimate, window, winterizing sequence — exists to land you between them.
Richmond closing dates at a glance
| Closing window | October 12 – October 22 |
|---|---|
| Close by (deadline) | October 22 |
| First freeze, 50% probability | November 4 |
| Open by (recommended) | April 10 |
| Opening window | April 3 – April 24 |
| 61°F crossing (7-day mean) | April 24 |
| Swim-season length (80°F+ days) | 116 days |
| NOAA normals station | Richmond International Airport · 8.7 mi · 164 ft |
Richmond's 116-day warm season leaves comfortable margins on both ends — the windows above aim you at the cheap-chemistry versions of each transition.
Put dates aside and follow the water: the Richmond curve says roughly 57°F by mid-April, 74°F by mid-June, 78°F in mid-August, then back down through 63°F in mid-October. The summer ceiling sits near 79°F, and every window above is just a line drawn on this curve.
The 12-step Richmond winterizing checklist
Sequenced against Richmond's October 12–October 22 window: chemistry while the pump still runs, blowouts before the equipment drains, cover last. Labels dictate every dose.
-
Balance the water a few days ahead
Start midweek for a weekend close: bring alkalinity and pH into their label ranges and let the water settle. What you seal under the cover is what the pool soaks in until spring.
-
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.
-
Service the filter one last time
One final filter service per the manual — cartridges rinsed and stored dry indoors, sand or DE backwashed. Winter turns trapped gunk into concrete.
-
Apply winter chemicals per label
Run the winter kit through moving water: dose each product per its label with the pump on, give it a few hours to distribute, then start the shutdown. Chemistry added to still water stays where it lands.
-
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.
-
Blow out the lines and plug returns
Work line by line: push air until the return spits dry mist, plug it against the flowing air, move on. Skimmer, returns, cleaner line, in whatever order your plumbing prefers — dry pipes are the entire point of closing.
-
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.
-
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.
-
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.
-
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.
-
Note this year's dates
Jot down when Richmond's water actually cooled and when you closed. A two-line note beats memory next October 12 — your own yard runs a few days off any model, including ours.
-
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
A small stack of supplies turns the checklist above into a single-weekend job. Buy before Richmond's October rush and the whole list ships at leisure instead of sprinting.
-
Winter cover
Sized to overlap; the cheapest insurance the pool wears all winter.
-
Cover pump
Standing water is a cover killer; this is the counter.
-
Expansion plugs + skimmer guard
Seals blown-out lines and sacrifices itself to skimmer ice.
-
Pool antifreeze
Pool-rated glycol for the lines air couldn't clear.
-
Winter closing kit
Season-length winter chemicals in one label-dosed box.
-
Air pillow
Centers under the cover so ice pushes inward, not outward.
How Richmond compares locally
Two nearby data points to triangulate with: Williamsburg, 46 miles from Richmond, models its close at October 26 (about a week later); Fredericksburg, 53 miles out, at October 18. Richmond's own window ends October 22. For the other half of the calendar see when to open in Richmond, or scan the full year on the season page.
Local means local: Richmond's dates come from Richmond International Airport, the nearest station with complete daily temperature normals — 8.7 miles east, about 164 feet up. Between that station and a Richmond County backyard there's always a degree or two of microclimate; the windows are built wide enough to carry it.
Field notes for Richmond owners
The fifteen-minute monthly walk-around
Once a month all winter: pump or siphon standing water off solid covers, re-tension straps or top up water bags, confirm the level hasn't dropped enough to strand the cover, and glance at the pad for critter nests. Every major cover failure starts as a skipped walk-around.
What comes indoors
Cartridges, the cover pump when idle, chemical containers, and anything with a small motor overwinter better in the garage. Cold cycling is hard on plastics and seals; shelf space is cheaper than replacements. Label a single bin now and spring assembly becomes a scavenger hunt with a map.
Gas heaters get the manual, not a guess
Every heater brand sequences its winterizing differently — drain plugs, blower considerations, gas supply, control settings. The generic advice (drain fully, close the valve) is right but incomplete; ten minutes with your model's manual protects the most expensive component you'll winterize.
Richmond pool closing FAQ
What temperature should water be to close a pool?
Below roughly 65°F, and trending down. Water closed warm keeps feeding algae under the cover for weeks; water closed in the 50s goes dormant almost immediately. Richmond's cool-down lands near October 12 in the normals, which is why the window opens there.
Can you close a pool too early?
Absolutely. A pool closed warm is an algae incubator: no circulation, fading sanitizer, and weeks of growth-friendly temperatures. Richmond's water doesn't settle below the risk zone until around October 12 — closing much before that trades a few weekends of maintenance for a rough spring.
Do I need antifreeze in pool lines?
Blown-out, plugged lines don't need it; doubtful lines do. Use only antifreeze labeled for pools, at the label's rate per foot of pipe — never automotive antifreeze. In Richmond the freeze clock starts around November 4, so settle this during closing, not during the first cold snap.
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?
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. Richmond reaches freeze territory around November 4 — the checklist above is cheaper than any one of those repairs.
When is the last safe date to close in Richmond?
Our model's practical deadline is October 22 — set by the cool-down plus ten days (the freeze normal, November 4, leaves room to spare). Push much past it and you're winterizing in freeze-warning weather, rushing the blowout, and hoping the cover goes on before the first hard night. Inside the October 12–October 22 window, none of that drama applies.
Email me when Richmond hits the closing window
Data: NOAA 1991–2020 climate normals via Richmond International Airport (8.7 mi); live outlook by Open-Meteo. Full attribution on the sources page. Model assumptions and error bars on methodology.