How to Dress for Changing Weather Outdoors

How to Read a Weather Forecast Before a Hike is where the hourly chart gets read. This page starts after that reading. The National Park Service lists extra clothing among the Ten Essentials because the air on the trail will not match the number you saw at the door. One extra layer, and a shell if rain or wind is in the window, is the outfit.

Rain on the window, like the photo, is a reason to put the shell on before you step out, not after you are wet. Each section below is one kind of weather and the sign that means turn around. The hiking-safety guide owns thunder. This page owns what you have on.

Wear a brim, a shirt you can sweat in, and light colors if you have them. Start earlier than the hot part of the day. Carry water. National Weather Service heat guidance is to slow down, get into shade, and sip water if the person can drink.

Headache, dizziness, nausea, or heavy fatigue is the turnaround. Confusion, fainting, or symptoms that get worse are emergency help, not a clothing change. Do not push the sunny half of the loop to finish what you planned. A lighter shirt does not cancel that turnaround.

A rain shell or a wind shell over a dry shirt is the system. Put it on at the first drops or when the clouds are already on you. A warm layer worn in the rain becomes a wet layer, and wet cloth stops insulating.

The turnaround is a shell that has soaked through and people who are cooling off. Add the dry layer you kept in the bag, and go back. Spare socks matter when feet are wet and you still have a walk. Standing under a tree is not a plan if you also hear thunder. That decision is on the safety guide.

Wind on a ridge, a field, a shore, or a bridge makes the same air feel colder. The shell goes over the warm layer so the warm layer stays dry and the wind does not blow through it. A hat that covers the ears does more than a thicker shirt with a bare head.

The turnaround is an exposed stretch you cannot cross without people getting cold, or a shell you left in the car. Go back to the trees or the trailhead. Do not add the summit because the view is close.

National Weather Service cold guidance is layers and staying dry. Start cooler than feels perfect, so the first hill does not soak the shirt. When you stop, put the warm layer on before you feel chilled. Gloves and a hat belong in the bag even when the car felt fine.

The Centers for Disease Control and Prevention describe hypothermia as a drop in body temperature, with shivering, exhaustion, fumbling hands, confusion, memory trouble, slurred speech, or drowsiness among the warning signs. Shivering you can stop by adding a dry layer is a reason to turn around. Confusion, fumbling that does not recover, or slurred speech is emergency help. This page does not give a warming treatment.

Turning around because someone is wet, cold, or dizzy is the clothing system doing its job. The extra layer was for that moment. Using it and continuing into worse weather spends the margin you packed.

Kids and anyone who will not say they are cold get checked by an adult: hands, mood, and whether they have gone quiet. Quiet plus wet is the turnaround even if the group vote is to continue.

On the weather observation log, note the forecast, what you wore at the start, what you added, and the moment you turned around or wished you had. Next time you pack from that note, not from the shop photo of a jacket.

If the same route is windy every afternoon, the shell becomes part of the default kit for that place. One honest note beats a new jacket you have not walked in. Write the layer you took off, too. The shirt that soaked on the first hill is the one to leave in the drawer next time.