Weather is one of the biggest factors in deciding when to climb, when to turn around and when to stay home.
When people think about climbing a 14er, they usually think about mileage, elevation gain, difficulty rating, route-finding and whether they are in good enough shape. All of that matters. But a lot of bad days in the mountains start with weather decisions that were made before anyone left the house.
Colorado weather can be tricky. A morning can start clear and calm, then turn into lightning, hail, graupel, strong wind, cold rain or snow before you are back below treeline. In spring and fall, the calendar may say hiking season while the mountain is still holding winter conditions. In winter, the whole game changes.
You do not need to become a weather expert to climb mountains, but you do need to pay attention, be honest about what you are seeing and be willing to change the plan.
This page is not here to scare you away from the mountains. It is here to help you think about weather the way you should before climbing high peaks. The summit is never guaranteed, and sometimes the smartest thing you do all day is turn around while things are still manageable.
One forecast is not enough. Forecasts are useful, but they are not promises. A forecast for the nearest town may not tell you much about what is happening on a windy ridge at 13,500 feet. The summit may be colder, windier and getting hit by weather that never reaches town.
Before heading out, compare a few sources and look for the overall pattern. If every forecast is showing storms early, strong wind or a cold front moving in, believe it. If the forecasts disagree, that is also useful information because it means there is uncertainty.
If the forecast is marginal, ask yourself a simple question: If this weather arrives two hours earlier than expected, are we still okay? If the answer is no, pick another plan.
Summer is when most people climb 14ers, and it is also when people get caught by thunderstorms. A lot of summer mornings start out beautiful. That does not mean the afternoon will be safe.
Clouds can build fast over the mountains. What looks like a nice morning can turn into thunder, lightning, hail and cold rain while you are still above treeline. Once that happens, you do not have many good options. The best lightning plan is to not be up there when the storm arrives.
Thunder means lightning is close enough to be a threat. You do not need to see a bolt hit nearby before taking it seriously. If you are above treeline and thunder is starting, it is time to move down.
Wind does not get enough respect. People will cancel for storms but still head up into wind that makes the route miserable or unsafe. Strong wind can knock you off balance, make it hard to communicate, wear down the group and turn cold temperatures into something much more serious.
Ridges, saddles and summits are often much windier than the approach. A forecast that looks manageable at lower elevation may feel very different once you are on an exposed ridge.
If the wind is making it hard to walk normally, communicate with your partners or keep your hands warm, it may be time to turn around.
Colorado storms can drop cold rain, hail or graupel even in summer. Graupel is that small, soft, pellet-like snow that can quickly coat rock, dirt and tundra. It may not look like much, but it can make footing surprisingly bad.
A dry route and a wet route are not the same route. If weather changes the surface under your feet, slow down and reassess the plan.
May, June, September and October can be some of the trickiest times to climb. Down low, it may feel like hiking season. Up high, the mountain may still be dealing with snow, ice, frozen ground, wet slabs or early winter conditions.
A dry trailhead does not mean a dry route. A sunny forecast does not mean the snow will be safe. A route that was mostly dry a few days ago can change quickly after one storm.
If there is snow on the route, do not treat it like a normal summer hike. Think about where the snow is, how firm it is, what happens if you slip and whether the slope could avalanche.
Gear only helps if it matches the conditions and you know how to use it. Carrying microspikes, crampons or an axe does not automatically make the route safe.
The transition from fall into winter deserves a special warning. Early-season snow can be some of the most frustrating and hazardous snow you will deal with. It is often thin, loose, unconsolidated and sitting on top of rocks, willows, old trail, ice or talus. It may not be deep enough to travel well, but it can still be deep enough to hide all the things you do not want to step into.
This is where people can get fooled. They think, “I have an axe and crampons, so I should be okay.” Maybe. Maybe not. An ice axe and crampons are useful tools in the right conditions, but they are not magic. They are not going to fix hollow, sugary, punchy snow over loose rock.
In early-season unconsolidated snow, crampons may scrape on buried rocks, ball up with snow or fail to bite into anything solid. An axe may not help much if the snow is too soft, too shallow or too inconsistent for a real self-arrest. If the surface under you is unstable, the problem may be the conditions themselves, not your lack of equipment.
If the snow is hollow, punchy, sugary, shallow over rocks or just not supporting your weight, an axe and crampons may not make the route reasonable. Sometimes the right call is to wait for better conditions or pick something lower.
Winter 14ers are a different deal. A summer trail may not be the safest winter route. Roads may be closed miles below the normal trailhead. Wind can erase tracks. Snow can hide the trail. A route that is straightforward in August may involve avalanche terrain, cornices, whiteout navigation and serious cold in January.
This page is not an avalanche course. If your route crosses, climbs below or travels near avalanche terrain, you need avalanche education, proper equipment and conservative decision-making.