Start with your weather
The United States has a wide spread of December conditions, and the failure modes differ. Think about which of these your display will face most.
| Region and weather | Main risks | What helps |
|---|---|---|
| Upper Midwest, New England, mountain West: snow and ice | Ice load on gutters and railings, buried cords, cracked brittle plastic | Sturdy clips, cords lifted off the ground, nothing heavy on gutters |
| Pacific Northwest and coastal areas: persistent rain | Water in connections, mildew on fabric | Drip loops, covers, quick-drying materials |
| Great Plains and mountain passes: wind | Lightweight pieces blowing away, tangles | Ties, stakes, weights; fewer loose pieces |
| Southwest and high desert: strong sun, dry air | Faded ribbon and plastic, brittle cords | UV-resistant products; bring fresh greenery in the shade |
| Southeast and Gulf Coast: heat, humidity, salt air | Rust, mold, fast-drying greenery | Coated metal, rinse after storms, artificial greenery |
Choose materials that can take it
- Lights: Look for an outdoor label and a listing from a recognized testing laboratory. LED strings run cool, so they can accumulate snow instead of melting it, which is fine, but do not chip ice off them.
- Cords: Outdoor-rated, with insulation designed to stay flexible in cold. Indoor cords stiffen and crack.
- Plastic and resin figures: Check that they are UV-stabilized and have drainage holes so rainwater does not pool inside.
- Metal frames: Powder-coated or galvanized finishes resist rust longer than bare painted metal.
- Fabric and ribbon: Look for outdoor or all-weather labeling, wired edges that hold their shape in wind, and quick-drying fibers.
- Real greenery: Fresh cuttings dry out quickly in sun and wind. Mix with artificial stems or keep real pieces in a shaded, sheltered spot.
Plan the power before you hang a thing
Electricity is where outdoor displays are most likely to cause real harm, so plan this part first.
- Count the load. Read the wattage on each product's tag or box. Add them up. A standard 15-amp household circuit at 120 volts can handle 1,800 watts, but it is wise not to run a continuous load above about 80 percent of that, around 1,440 watts, particularly because other things may share the circuit.
- Use GFCI protection. Outdoor outlets are generally required to be GFCI-protected in modern homes. If yours are not, a portable GFCI adapter or GFCI cord is an inexpensive safeguard.
- Use the right cords. Pick outdoor-rated extension cords with a gauge heavy enough for the length and load, as marked on the cord.
- Respect the connection limit. Each light set shows how many can be chained together. Do not exceed it.
- Add a timer or photocell. Lights come on at dusk and go off at a set hour, which saves energy and follows NFPA's advice to switch lights off when you are away or asleep.
Keep water out of connections
Water in a plug is the most common outdoor failure. Three habits help:
- Drip loops. Let each cord hang in a low U-shape just before it reaches the connection, so water follows gravity down and drips off instead of running into the plug.
- Raise the connection. Prop the plug on a stake, a block or a small shelf so it stays out of snowmelt and puddles.
- Cover it. Weatherproof covers, enclosed outdoor connection boxes or a purpose-made "plug cover" keep rain and sleet out. Do not wrap connections in tape or plastic bags, which can trap moisture.
Hang it so it stays up
- Use the right clips. Gutter clips, shingle tabs, siding clips and rail clips hold without punching holes in cord insulation.
- Do not hang heavy pieces on gutters. Gutters are not designed for ice load or heavy garland. Use them only for lights that clip on.
- Keep it tidy at corners. A tight loop in a cord stresses the wires, so make gentle bends.
- Anchor lightweight pieces. Yard stakes should go deep into soil, and hollow figures can be weighted with sandbags hidden behind them or tethered to a stake. Large inflatables need their own stakes and tethers and should never be placed where a gust could carry them into a road or onto power lines.
- Think about the ladder. Follow the ladder's rating, put it on solid ground, and use a spotter. If the job requires a roofline climb on ice, consider hiring someone.
Snow, ice and rain during the season
After a storm, check the display in daylight. Remove snow gently by hand or with a soft broom, and do not chip ice off lights, which can crack bulbs and wires. If the weight of ice pulls a string, unplug it first, then free it. If a string is tripping a GFCI repeatedly, take that section down and dry it thoroughly, and if the problem returns, replace it.
Rinse, dry and keep UV in check
Sun fades red ribbon and plastic within a season in high-UV areas, so shaded spots help. In coastal areas, rinse metal and plastic pieces with fresh water after salt spray. Make sure fabrics are fully dry before storing.
Take-down and storage
Pick a dry day. Unplug everything and coil cords loosely around cardboard or a reel, avoiding tight kinks. Check every string for cracked insulation and bad bulbs, and discard any set with exposed wire. Pack lights in labeled bins, and put silica packets or similar dry packs in with metal pieces if you live in a humid region. Keep stored decor off concrete and away from rodents.
A weather-ready checklist
- Everything is labeled for outdoor use.
- The load is added up and under about 80 percent of the circuit.
- A GFCI outlet or adapter is in use.
- Drip loops and connection covers are in place.
- Clips, not nails, are holding the lights.
- Yard pieces are anchored.
- A timer controls the lights.
Frequently asked questions
Can I leave outdoor Christmas lights up all winter?
It is best not to. Prolonged exposure to ice, sun and temperature swings degrades cords and plastics. Take them down within a few weeks of the holiday, and check them before the next season.
What if my outdoor lights keep tripping the GFCI?
Water is the usual culprit. Unplug everything, dry the connections, lift them off the ground and add drip loops. If it keeps happening, find the faulty set by plugging them in one at a time.
Are LED lights better for outdoors?
They use far less power and run cooler, so you can run more of them on one circuit. You still need ones labeled for outdoor use and installed with proper connections.
Do I need special extension cords?
Yes. Use outdoor-rated cords sized for the load and length, and avoid daisy-chaining several cheap cords together.
How do I protect a wreath from wind?
Use a secure hanger, tie the back of the wreath to the hook with wire, and choose a wreath with a sturdy frame. A small weight at the bottom can reduce swinging.
