Please note that an average mid-summer day on Mount Washington has a high temperature of about 53 degrees Fahrenheit, and an overnight low temperature of about 42 degrees Fahrenheit. It has never been warmer than 72 degrees Fahrenheit (and that only happened twice!). Temperatures below freezing can occur even in summer. Average winds in summer are about 25 miles per hour, with hurricane force gusts possible. Thick, wet fog occurs on about 90% of the days in summer; and measurable precipitation occurs on more than half of summer's days. Never underestimate the severity of summit weather conditions!
Participants need to be in good health and good physical condition, properly prepared with warm clothing and wind and rain gear, to be safe and comfortable in sometimes cold, wet and windy weather. Participants should bring sturdy footgear for clambering over the rough summit rocks.
You will need layers of warm clothing; we do get winter-like conditions in the summer! Cotton clothing of any sort is unsuitable for use on the mountain because of its tendency to absorb and hold moisture. Suggested materials are listed for each item:
Toiletries
Bring all necessary toiletries and medications, including an extra couple of days worth of medications in case adverse weather delays departure. There is nowhere to purchase toiletries or medications on the summit.
Bedding
Mattress, sheets, pillow and blankets are provided, but you are encouraged to bring your own sleeping bag for optimal comfort. If you are a light sleeper, we suggest also bringing earplugs, as you will be sharing a bunkroom with fellow participants.
Special Equipment
If you are bringing a camera or other special equipment, remember to bring plenty of film, batteries and battery chargers. There is nowhere to purchase electronic equipment on the summit.
Other Gear
Personal gear not listed above should be kept to a minimum, since space and carrying capacity of the vehicle, and storage area in the bunkroom, is very limited.