FrostList

When to Winterize Your Boat in Burlington, NC

ON TRACK135 days until first 28°F freezeNov 23

The first 28°F freeze near Burlington averages November 23 (1991–2020 normals) — enough to crack an unprotected block even where owners assume they're safe — so winterize the boat by November 16. The early-odds date runs roughly 17 days ahead of the median, so build in that buffer.

OUTLOOK

Typical first first 28°F freeze near Nov 23; local deadline about Nov 16. The live 10-day outlook loads here.

Local freeze dates for Burlington

ThresholdEarly (1-in-10)MedianLate (9-in-10)
32°F (light freeze)Oct 26Nov 9Nov 25
28°F (hard freeze)Nov 6Nov 23Dec 14
24°F (severe)Nov 20Dec 11Jan 7

NOAA station: Burlington Fire Stn #5 · 2.5 mi away · 660 ft elevation.

For Burlington, the nearest NOAA station with freeze data is Burlington Fire Stn #5, 2.5 miles out at 660 feet. Median first-freeze dates there run 32°F by Nov 9, 28°F by Nov 23, 24°F by Dec 11. Year to year the 28°F date has ranged from Nov 6 to Dec 14 — about 38 days apart. Spring's last 32°F freeze clears around Mar 29. Snowfall averages 9 inches a year, first reaching an inch near December.

In Burlington, freezing nights (32°F) typically begin around Nov 9 and the first hard freeze (28°F) follows near Nov 23. The 32°F date swings from Oct 26 at its earliest to Nov 25 at its latest, near 30 days. The last spring freeze averages Mar 29 and as late as Apr 15, which sets the safe window for reopening outdoor water and de-winterizing gear. At about 9 inches of snow a year, the freeze — not snow load — is the thing to plan around.

Your boat checklist

  1. Change the engine oil and filter while the motor is warm so contaminants leave with the old oil.
  2. Run the engine on antifreeze until pink fluid reaches the outlet, protecting the block and manifolds.
    Helpful gear: Marine antifreeze — Recommended pick
  3. Fog the cylinders with fogging oil as the engine runs down to coat internal parts against corrosion.
    Helpful gear: Fogging oil — Recommended pick
  4. Top off the fuel tank and add stabilizer to limit condensation and protect ethanol-blend fuel.
    Helpful gear: Marine fuel stabilizer — Recommended pick
  5. Drain the raw-water system, the livewell, and any washdown lines that can trap water.
  6. Remove the battery, charge it fully, and keep it on a maintainer over the layup.
    Helpful gear: Battery maintainer — Recommended pick
  7. Support the cover so snow and rain shed off, and leave vents so the interior can breathe.
  8. For an inboard or sterndrive, follow the manual closely — those blocks are the ones freeze claims hit hardest.

What to have on hand

Marine antifreeze
Propylene-glycol fluid rated for engine blocks and systems.
Recommended pick
Marine fuel stabilizer
Additive that protects ethanol-blend fuel over the layup.
Recommended pick
Fogging oil
Spray that coats cylinders against corrosion in storage.
Recommended pick
Battery maintainer
Keeps the cranking battery topped off on the trailer.
Recommended pick

What this means locally

Compared with nearby cities, Burlington's first-freeze date near Nov 23 sits later than Greensboro (Nov 15) and later than Chapel Hill (Nov 14). North Carolina's deadlines span Nov 3 to Nov 26 statewide — one date for all of North Carolina would be off by weeks for Burlington. Once you know Burlington's freeze date, use it to winterize an RV and store a motorcycle too.

Other winter jobs in Burlington

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

Sprinklers → Nov 13Frozen pipes → Oct 26Ice dams → Nov 15Car battery → Nov 23Snow blower → Nov 24Sump pump → Mar 29RV → Nov 13Motorcycle → Nov 9

See the full Burlington winter checklist, in order →

Frequently asked questions

At what temperature does a boat engine block crack?
Trapped water in an engine block or manifold can freeze and crack the casting once temperatures fall below 32°F and stay there long enough. Inboard and sterndrive blocks hold the most water and are the most vulnerable. Draining fully and adding antifreeze before the first hard freeze near Nov 23 is the protection.
Do outboards need winterizing?
Yes. An outboard should be drained so no water sits in the powerhead or lower unit, and the fuel system stabilized. Outboards self-drain better than inboards when tilted down, but fogging the cylinders and changing the gear oil are still part of a proper layup.
Fogging oil: is it necessary?
Fogging coats the cylinder walls and internal parts with a film that resists corrosion during months of storage. On engines that sit all winter it is cheap insurance against rust, especially in humid or coastal storage. Follow your engine maker's guidance on how to apply it.
How much does boat winterization cost?
A professional winterization varies with engine type and boat size, and inboards cost more than a simple outboard. Doing it yourself costs mainly antifreeze, oil, and fogging oil. Either way, the bill is far smaller than repairing a cracked block, which is the failure winterizing prevents.
Do boats in NC really need winterizing?
If temperatures reach freezing where the boat is stored, yes. Freeze claims are common in milder states precisely because owners assume they are safe and skip the step, then a rare cold snap cracks a block. Check the local freeze dates above and protect the engine before the first hard freeze.
When should I de-winterize my boat?
De-winterize in spring once the risk of a hard freeze has passed for your area. Reconnect and charge the battery, replace drain plugs, check hoses and clamps, and inspect the fuel system before the first launch. Reopening too early leaves the block exposed to a late cold snap.

Data: NOAA 1991–2020 normals via Burlington Fire Stn #5, live outlook by Open-Meteo. Sources · Methodology. Last updated: July 11, 2026.