FrostList

When to Winterize Your RV in Sandy, UT

ON TRACK113 days until first 28°F freezeNov 1

Aim to winterize your RV in Sandy by October 22, roughly a week and a half before the median first 28°F freeze of November 1, which one fall in ten shows up by October 17. Year to year the date swings about 32 days, which is why the live outlook beats the calendar.

OUTLOOK

Typical first first 28°F freeze near Nov 1; local deadline about Oct 22. The live 10-day outlook loads here.

Local freeze dates for Sandy

ThresholdEarly (1-in-10)MedianLate (9-in-10)
32°F (light freeze)Oct 6Oct 22Nov 7
28°F (hard freeze)Oct 17Nov 1Nov 18
24°F (severe)Oct 24Nov 12Nov 28

NOAA station: Cottonwood Weir · 4.7 mi away · 4,986 ft elevation.

For Sandy, the nearest NOAA station with freeze data is Cottonwood Weir, 4.7 miles out at 4,986 feet. Median first-freeze dates there run 32°F by Oct 22, 28°F by Nov 1, 24°F by Nov 12. Year to year the 28°F date has ranged from Oct 17 to Nov 18 — about 32 days apart. Spring's last 32°F freeze clears around Apr 29. Snowfall averages 82 inches a year, first reaching an inch near October.

Sandy usually sees its first 32°F night about Oct 22, with the first 28°F hard freeze close behind near Nov 1. The 32°F date swings from Oct 6 at its earliest to Nov 7 at its latest, near 32 days. The last spring freeze averages Apr 29 and as late as May 30, which sets the safe window for reopening outdoor water and de-winterizing gear. Roughly 82 inches of snow fall in an average year, so a clear roof edge and a running snow blower matter as much as the freeze itself.

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

Sandy freezes close to Draper (Nov 2) and close to South Jordan (Nov 2) — a reminder that even nearby towns differ by days. Statewide, Utah prep dates run Oct 4 through Nov 10, which is why Sandy gets its own number rather than a Utah-wide average. The same freeze also decides when to shut down your sprinklers and winterize a boat.

Other winter jobs in Sandy

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

Sprinklers → Oct 22Frozen pipes → Oct 6Ice dams → Sep 15Car battery → Nov 1Snow blower → Sep 24Sump pump → Apr 29Boat → Oct 25Motorcycle → Oct 22

See the full Sandy 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 Sandy?
Wait until the last spring freeze has passed, which averages near Apr 29 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 Cottonwood Weir, live outlook by Open-Meteo. Sources · Methodology. Last updated: July 11, 2026.