There’s no single temperature that’s too cold for kids to play outside. Go by the wind chill: the National Weather Service chart shows exposed skin can get frostbite in about 30 minutes once the wind chill drops to around −18°F, and faster below that. Above that line, layers, short sessions and warm-up breaks are what keep kids safe.
This is for parents deciding whether the backyard, the swing set or the sledding hill is still on today. The guidance comes from the National Weather Service (NWS) and the American Academy of Pediatrics (AAP) parent site, HealthyChildren.org.
On this page
Why Wind Chill Matters More Than the Thermometer
Wind pulls heat off skin faster than still air does. That’s why 20°F on a calm morning feels very different from 20°F with a stiff breeze.
The NWS wind chill chart turns air temperature and wind speed into one “feels like” number. It also shades the zones where frostbite can start in 30, 10 and 5 minutes on exposed skin.
| Air temp | Wind | Wind chill (NWS) |
|---|---|---|
| 30°F | 10 mph | 21°F |
| 20°F | 20 mph | 4°F |
| 10°F | 15 mph | −7°F |
| 0°F | 15 mph | −19°F (frostbite in about 30 min) |
Your phone’s weather app usually lists the wind chill as “feels like”. Check it before kids head out, not the air temperature alone.
How Cold Is Too Cold? A Simple Way to Decide
Schools and daycares set their own indoor-recess rules, and they don’t all agree. So there’s no official cutoff to quote, but the NWS chart gives you a sensible way to think about it.
- Wind chill above freezing: normal play with a coat, hat and gloves.
- Wind chill from 32°F down to about 0°F: full winter gear, and bring kids in to warm up every so often.
- Wind chill from 0°F down to about −18°F: short sessions with every bit of skin covered, and check fingers, ears and noses when they come in.
- Wind chill around −18°F or colder: frostbite can start in 30 minutes or less. If I were deciding for two kids, this is the day we’d play indoors.
Wet changes everything. A child in soaked mittens or snow-packed pants at 25°F gets cold faster than a dry child at 10°F, so wet clothes mean it’s time to come in.
How to Dress Kids for Cold Weather
The AAP’s rule of thumb is that children should wear one more layer than an adult would in the same weather. Several thin layers trap heat better than one thick one, and they can come off if a kid gets sweaty.
- Base layer: a snug layer that pulls sweat away from skin. Skip cotton next to the skin on very cold days, because it stays wet.
- Middle layer: fleece or wool for warmth.
- Outer layer: a waterproof, windproof jacket and snow pants.
- Hands, feet and head: a hat that covers the ears, mittens (warmer than gloves), warm socks and waterproof boots.
Use a neck gaiter instead of a long scarf. Scarves and drawstrings can catch on slides and swing chains, which is a strangulation risk on any playground.
Signs of Frostbite and Hypothermia
Frostbite
Frostbite usually hits fingers, toes, ears and the nose. HealthyChildren.org says the skin may turn pale, gray and blistered, and a child may say it burns or feels numb.
Bring the child inside and warm the area in warm, not hot, water; the AAP suggests about 104°F. Don’t rub it, and call your doctor if the numbness doesn’t go away.
Hypothermia
Hypothermia means body temperature has dropped below 95°F, and it can happen faster in children than in adults. Watch for shivering, a child who gets sluggish or clumsy, and slurred speech.
Hypothermia is an emergency, so call 911. While you wait, get the child indoors, take off wet clothes and wrap them in blankets or warm, dry clothing.
Winter Playground and Backyard Safety Tips
Cold metal
Metal slides, swing chains and monkey bars get far colder than the air feels. Bare or damp skin can stick to frozen metal, so mittens stay on and tongues stay off.
Frozen ground under the swings
Mulch and sand can freeze into a hard crust, and that won’t cushion a fall the way loose fill does. Ice on platforms, ladder rungs and slide exits is a slip hazard too, so knock it off before kids climb.
Our guide to outdoor play area safety covers the year-round basics.
Trampolines and inflatables
A snowy or icy trampoline mat is slippery, and snow load is hard on the springs. Here’s how to store a trampoline for winter if you’re putting it away.
Outdoor bounce houses should wait for spring. See why a bounce house shouldn’t go outside in winter.
Short sessions and warm-up breaks
The AAP recommends setting time limits on outdoor play in the cold and calling kids in now and then to warm up. Kids having fun often won’t say they’re cold, so check them yourself.
Frequently Asked Questions
Can babies and toddlers play outside in the cold?
Yes, for short spells, dressed in one more layer than you. Babies and toddlers can’t tell you they’re cold, so keep outings short and check their hands, feet and cheeks often.
Is 20 degrees too cold to play outside?
Not usually, if kids are dressed for it and stay dry. Check the wind first: 20°F with a 20 mph wind has a wind chill of about 4°F, which calls for full gear and shorter sessions.
How long can kids stay outside in freezing weather?
There’s no fixed number, because it depends on wind chill, clothing and whether they’re wet. The NWS chart is the hard limit for exposed skin; well above it, regular warm-up breaks matter more than the clock.
Is it safe to use a swing set in winter?
Yes, with mittens on and the ice cleared from seats, rungs and the ground under the swings. Plastic parts can get brittle in deep cold, so look over seats and slides for cracks before kids use them.
Final Thoughts
Check the wind chill, dress kids one layer warmer than yourself, and bring them in when they’re wet or the “feels like” number nears −18°F. Most winter days are fine for play with those three habits.
Next, read how to store a trampoline for the winter.
Please be careful and use at your own risk
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