FrostList

When to Winterize Your RV in Puyallup, WA

ON TRACK126 days until first 28°F freezeNov 14

Puyallup's deadline to winterize your RV is November 4: the local first 28°F freeze runs November 14 on average and October 28 at its earliest (1991–2020 normals). Year to year the date swings about 41 days, which is why the live outlook beats the calendar.

OUTLOOK

Typical first first 28°F freeze near Nov 14; local deadline about Nov 4. The live 10-day outlook loads here.

Local freeze dates for Puyallup

ThresholdEarly (1-in-10)MedianLate (9-in-10)
32°F (light freeze)Oct 13Oct 30Nov 17
28°F (hard freeze)Oct 28Nov 14Dec 8
24°F (severe)Nov 8Dec 1Jan 9

NOAA station: Mcmillin Rsvr · 3.8 mi away · 579 ft elevation.

Numbers for Puyallup come from Mcmillin Rsvr, 3.8 miles away at 579 feet, where the medians fall 32°F by Oct 30, 28°F by Nov 14, 24°F by Dec 1. That hard freeze has landed anywhere from Oct 28 to Dec 8, a swing of roughly 41 days. Spring's last 32°F freeze clears around Apr 11. Snowfall averages 6 inches a year, first reaching an inch near November.

The freeze arrives in two steps in Puyallup: 32°F around Oct 30, then a hard 28°F near Nov 14. Year to year, the first 32°F night has fallen anywhere from Oct 13 to Nov 17 — about 35 days apart. Spring's final freeze lands near Apr 11 and as late as Apr 29, so that is when outdoor water and stored gear can safely come back online. Snow is light here, near 6 inches a year, so pipe and battery cold usually matters more than plowing.

Your rv checklist

  1. Drain the fresh, gray, and black tanks, then drain the water heater only after it has cooled and lost pressure.
  2. Bypass the water heater so you do not waste six gallons of antifreeze filling the tank.
  3. Blow out the lines with a compressor at about 30–40 psi, then pump non-toxic RV antifreeze through every faucet until it runs pink.
    Helpful gear: RV antifreeze (6-pack) — Recommended pick
  4. Use a water-pump converter kit to draw antifreeze straight from the jug through the plumbing.
    Helpful gear: Water pump converter kit — Recommended pick
  5. Pour a cup of antifreeze into each drain trap and the toilet to protect the seals.
  6. Fit a blow-out plug at the city-water inlet so you can clear that line too.
    Helpful gear: Blow-out plug — Recommended pick
  7. Remove batteries or put them on a maintainer, and store them off a cold concrete floor.
  8. Cover roof vents, close the propane, and set out traps or deterrents so mice do not move in.

What to have on hand

RV antifreeze (6-pack)
Non-toxic pink fluid for the fresh-water plumbing and traps.
Recommended pick
Water pump converter kit
Siphon kit that draws antifreeze straight through the pump.
Recommended pick
Blow-out plug
Adapter that lets a compressor clear the lines before antifreeze.
Recommended pick
Heated fresh-water hose
For anyone staying hooked up through a cold snap.
Recommended pick

What this means locally

Against its neighbors, Puyallup (first freeze Nov 14) runs about a week ahead of Tacoma (Dec 1) and about a week ahead of Auburn (Nov 24). Across Washington, local prep deadlines in our data range from Oct 6 to Dec 1, so a statewide rule of thumb would miss Puyallup by weeks. In Puyallup, that same cold is your cue to shut down your sprinklers and winterize a boat.

Other winter jobs in Puyallup

Every task below is dated to Puyallup's own freeze and snow normals.

Sprinklers → Nov 4Frozen pipes → Oct 13Ice dams → Oct 16Car battery → Nov 14Snow blower → Oct 25Sump pump → Apr 11Boat → Nov 7Motorcycle → Oct 30

See the full Puyallup winter checklist, in order →

Frequently asked questions

At what temperature do RV pipes freeze?
An RV's exposed plumbing and thin-walled tanks can begin to freeze once temperatures sit in the mid-20s for a few hours, sooner than a house because there is little insulation around the lines. That is why the winterizing deadline tracks the first 28°F freeze rather than the first light frost.
How much RV antifreeze do I need?
Most travel trailers and motorhomes take about two to three gallons of non-toxic RV antifreeze, and larger rigs more. Bypassing the water heater saves roughly six gallons you would otherwise waste filling the tank. Buy an extra jug; stores sell out once the first freeze warnings hit.
Can I just use my RV furnace instead of winterizing?
Relying on the furnace is risky. A propane run-out, a tripped breaker, or a dead battery during a cold night leaves the plumbing unprotected, and the furnace may not keep the underbelly and bays warm enough anyway. Draining and adding antifreeze is the dependable way to protect the system.
How do I winterize an RV water heater?
Let the tank cool and lose pressure, then drain it and, if fitted, pull the anode rod. Do not add antifreeze to the water heater tank; instead, set the bypass valves so antifreeze skips the tank and fills only the lines. Fresh antifreeze in an unbypassed heater just wastes several gallons.
When is it safe to de-winterize an RV in Puyallup?
Wait until the last spring freeze has passed, which averages near Apr 11 here. De-winterize by flushing the antifreeze from the lines, sanitizing the fresh tank, and checking for leaks before a trip. Reopening too early risks a surprise late freeze on a charged system.
Do I need to winterize an RV stored indoors?
A reliably heated indoor space that stays above freezing protects the plumbing, so full winterizing may not be needed. But an unheated garage or barn can still drop below freezing on a cold night. If you cannot guarantee the space stays warm, winterize to be safe.

Data: NOAA 1991–2020 normals via Mcmillin Rsvr, live outlook by Open-Meteo. Sources · Methodology. Last updated: July 11, 2026.