Yes, You Can Line Dry Your Laundry In The Winter. Here’s How

• Give A Shit About Nature
• April 12, 2026
• Sustainable Living
• 0 Comments

Most people assume line drying is a warm-weather activity — something you do in July, not January. This assumption is wrong, and it’s costing people money every winter.

Clothes can dry outside in freezing temperatures, even well below freezing. The process works differently than summer drying, but it works. People have been doing it for centuries. Once you understand the simple science behind it and learn a few practical tricks, winter line drying becomes a genuine option for cutting your energy bill year-round.

Here’s what you need to know.

Why this matters: what your dryer actually costs

Electric clothes dryers are one of the most energy-hungry appliances in a typical home. According to the U.S. Department of Energy, a standard electric dryer uses between 1,800 and 5,000 watts per cycle. At current average electricity rates of around 16 cents per kWh, that works out to roughly $0.25 to $0.85 per load depending on your dryer and your local rates — and households doing six or seven loads a week can spend $100 to $300 per year on drying alone.

Line drying costs nothing. Every load you dry outside is money back in your pocket, regardless of the season.

The science: how clothes dry in freezing temperatures

In warm weather, wet clothes dry through evaporation — liquid water turns to vapor and escapes into the air. In freezing temperatures, something different happens, and it’s genuinely interesting.

When you hang wet laundry outside in below-freezing air, the water in the fabric freezes quickly. Your jeans become stiff boards. Your towels could stand on their own. This looks like failure. It isn’t.

The moisture in those frozen clothes then undergoes a process called sublimation — the water transitions directly from solid (ice) to vapor, bypassing the liquid phase entirely.

“You get water vapor from ice without melting it,” explained Marcus Hultmark, a professor of mechanical and aerospace engineering at Princeton University, in a piece for the Sierra Club. It’s the same process that causes ice cubes to slowly shrink in a freezer even without melting.

The result: clothes that went out stiff and frozen come back dry. They may still feel slightly cool or faintly damp when you bring them in, but a short time indoors — or thirty minutes on a drying rack — finishes the job completely.

Two conditions that accelerate sublimation:

• Low humidity. Dry air pulls moisture away from the fabric faster. Cold, crisp days with low humidity dry clothes significantly faster than damp, overcast days.
• Wind. Moving air carries water vapor away from the surface of the fabric. Even a light breeze makes a meaningful difference.

What works well outside in winter

Not all laundry is equally suited for outdoor winter drying. Some items dry beautifully; others are better handled indoors.

Best candidates for outdoor winter drying:

• Cotton t-shirts, underwear, and socks
• Sheets and pillowcases
• Denim jeans (they take longer but dry reliably)
• Synthetic fabrics like polyester and nylon
• Towels (thick towels may need to finish indoors)

Better dried indoors:

• Wool and cashmere — freezing can stress delicate fibers and cause shrinkage or damage
• Silk — too delicate for freezing temperatures
• Items with significant embroidery or decoration that may be damaged by ice formation in the fabric
• Anything you need dry within a few hours

Practical tips for successful winter line drying

Start early. This is the single most important factor. Sublimation is slow compared to summer evaporation, and you want maximum daylight hours working for you. Hanging laundry at 8 a.m. on a clear, cold day is very different from hanging it at noon. If you need to, wash your laundry the night before so it’s ready to go out at first light.

Shake items out before hanging. A quick shake removes excess water and helps prevent stiff, misshapen edges once the fabric freezes. The less water in the garment at the start, the less work sublimation has to do.

Space items well apart. Where frozen fabrics touch each other, ice bridges form between them and drying slows significantly. Give everything room for air to circulate on all sides. This means fewer items per line than you might hang in summer.

Hang items to maximize surface area. Fold towels over the line rather than hanging them in a thick bundle. Spread jeans flat across two parallel lines if possible. The more fabric surface exposed to air, the faster sublimation works.

Bring items in before dark. Once the sun goes down and temperatures drop further, sublimation slows dramatically. Leaving laundry out overnight in freezing temperatures mostly just keeps it frozen without drying it further. Bring everything in at dusk and let items finish on an indoor drying rack overnight if they’re still slightly damp.

Spin your laundry on the highest spin setting. The less water in the fabric when it goes outside, the faster it dries. A thorough spin cycle — 1,200 RPM or higher if your machine allows it — removes significantly more water than a gentle spin and cuts outdoor drying time noticeably.

The stiffness problem — and how to fix it

Line-dried clothes, especially in winter, often come in feeling stiffer than dryer-dried clothes. There are two reasons for this, and both are fixable.

Reason 1: Detergent or fabric softener residue. Karen K. Leonas, a professor of textile sciences at North Carolina State University, explained to the Sierra Club that residual detergent left in fabric after washing forms a coating as clothes dry. “When line-drying, it forms this coating that makes it feel stiff,” she said. The fix: use less detergent than you think you need (most people use too much), and run an extra rinse cycle if your machine allows it.

Reason 2: Hydrogen bonds between fibers. Cotton, linen, and other cellulose-containing fabrics form hydrogen bonds between fibers as they dry. The dryer prevents this by keeping clothes in constant motion. Line drying doesn’t. The fix is simple: bring your laundry in when it’s still slightly damp and tumble it in a dryer for ten to fifteen minutes with no heat, or on the air-only setting. This breaks the hydrogen bonds without using significant energy.

The vinegar trick. Adding half a cup of white vinegar to your wash cycle as a fabric softener substitute helps prevent stiffness by clearing detergent residue from fibers. It leaves no vinegar smell once dry. This is an old practice with a legitimate mechanism behind it — the mild acidity helps rinse residues that water alone misses.

Indoor line drying in winter: what to know

Outdoor drying isn’t always possible — sometimes it’s raining, or the wind is punishing, or you simply don’t have the setup for it. Indoor drying on a rack or line is a perfectly good alternative, with a few things worth knowing.

Humidity management matters. Clothes dry indoors by evaporation, and all that moisture has to go somewhere — into your indoor air. In a well-ventilated home, this is fine. In a tightly sealed home, regularly drying large loads indoors can raise humidity levels enough to promote mold and mildew growth on walls and windowsills, particularly in colder rooms. The UK’s National Health Service has flagged indoor clothes drying as a contributor to indoor mold in poorly ventilated homes.

To dry indoors safely: use a room with a window you can crack slightly, run a bathroom exhaust fan, or use a dehumidifier in the same space. Don’t dry large loads in a closed bedroom or basement with no airflow.

Best spots for indoor drying:

• Near a sunny window (natural light and a bit of heat helps)
• In a laundry room or bathroom with ventilation
• Near a heat vent — warm air accelerates evaporation — but not directly on a radiator, which can damage some fabrics

A heated drying rack is worth considering if you dry clothes indoors regularly. These are low-wattage electric racks (typically 200 to 400 watts — a fraction of a dryer’s consumption) that gently warm clothes as they dry. They’re widely used in Europe and are available from retailers like Costco. A full load typically dries overnight.

Setting up for outdoor winter drying

If you’re new to line drying or upgrading your setup for year-round use, a few equipment notes:

Clothesline options:

• A simple braided cotton or synthetic rope strung between two posts or trees works fine
• Retractable clotheslines are convenient for spaces where you don’t want a permanent line
• A fold-out freestanding drying rack gives you flexibility if you don’t have yard space for a fixed line

Clothespins: Standard wooden or plastic clothespins work, but plastic clothespins tend to become brittle and break in very cold temperatures. Stainless steel clothespins are an investment worth making if you plan to dry outdoors year-round — they last indefinitely and handle cold better than either wood or plastic.

Gloves: Hanging laundry in freezing temperatures with bare hands is genuinely unpleasant. A pair of thin glove liners solves this entirely.

Frequently asked questions

Will clothes actually be dry after freezing on the line? Yes, though heavy items like jeans and thick towels may need to finish indoors. The freeze-drying process removes the vast majority of moisture; what remains dries quickly on an indoor rack.

Is there a temperature at which outdoor winter drying stops working? Sublimation slows significantly below about 10°F (-12°C), but doesn’t stop entirely. Wind and low humidity matter more than temperature — a dry, breezy day at 15°F will dry clothes faster than a humid, still day at 28°F. Extremely cold, still, humid days are the hardest conditions.

Does freezing damage clothes? For most fabrics — cotton, synthetics, denim — no. Wool, cashmere, silk, and delicate knits can be stressed by freezing, particularly if they freeze while tightly twisted or compressed. Hang delicates gently and avoid freezing them if possible.

What about in states or municipalities that restrict clotheslines? Some HOAs and municipalities restrict outdoor clotheslines. However, 19 states have passed “right to dry” laws that limit HOAs’ ability to prohibit clotheslines on private property. Check your local rules — and if you’re in a restricted area, indoor drying is a full alternative.

How much money can I actually save? At average electricity rates and assuming three to four loads per week, eliminating dryer use saves roughly $70 to $130 per year. In high-electricity-cost states like California, New York, or Hawaii, savings can be significantly higher. The EnergySage electricity calculator lets you run the numbers for your specific state and usage.