No forecast reaches a valley the way the sky itself does. Learn a handful of signs, and you can tell hours ahead when conditions are about to change, long before a phone alert arrives.
Clouds worth watching
High and wispy
Thin, feathery clouds high in the sky often arrive ahead of a front. If they thicken and lower over a day, expect rain to follow.
Towering and dark
Tall, flat-bottomed clouds that build quickly in the afternoon can mean thunderstorms. Be off ridges and away from open ground before they reach you.

Other signs
- A sudden drop in temperature or a shift in wind direction.
- Smoke from the fire that falls or swirls instead of rising.
- A ring or halo around the sun or moon, often a day ahead of rain.
- Red skies at dawn and calm, clear ones at dusk, with a pinch of salt.
The sky is always telling you something. The skill is slowing down enough to listen.
CampAtelier field notes
Weather signs work best in combination. One cloud on its own means little, but a falling temperature, a rising wind and a darkening sky together tell a clear story. Keep a short note of what you see each day, and your instincts will improve quickly with every trip.
A simple routine
- Look at the sky at dawn and again at midday, and note how it changed.
- Check the wind direction and whether it is steady or gusty.
- Watch the horizon in the afternoon for building clouds.
- Decide your plan for the next few hours and the nearest shelter.
Put it to use
Check a proper forecast before you go, then treat the sky as your second opinion. If the two disagree, assume the worse of them and pitch where you have shelter.
