Climate, Dress, and Staying Healthy

Fall in the Rockies in late September can be fantastic!  Temperatures in late September in nearby Estes Park, Colorado, average in the mid-60s °F (18-21°C) for highs and the high 30s °F (3-4°C) for lows.  Most days are crisp and clear with bright sunshine and gorgeous blue skies. In typical years, average monthly precipitation totals for the region are low, about 1.5” (3.8cm), but rain showers and snow are possible, even likely, at this time of year.

The meeting venues, socials, and meal locations are all heated, if needed.  Attendees may wish to bring a sweater or light jacket for cooler meeting locations and a heavier coat or parka for colder evenings and early mornings. A hat and gloves are recommended for early morning walks or evening moments in the mountains. (Layers, layers, layers!) AOU/COS/SCO meetings do not have a dress code; we suggest slacks or pants and comfortable shoes for comfort and ease walking among the meeting venues.  For the Banquet, casual business dress is often the norm.

The sun is intense for much of the day, particularly given our elevation at 8,010ft (2,440m). Above 8,000 feet, oxygen is approximately 45% less dense and there is 50% to 80% less humidity than sea level. We recommend using sunscreen, a hat, and long pants and long –shirts to avoid sunburn. We also strongly recommend attendees bring a water bottle (there are fountains throughout the premises) and drink plenty of water (64 ounces daily) as people tend to lose more water through respiration and perspiration in the dry conditions. High altitude-related health problems can also occur, and symptoms of altitude sickness include headaches, nausea, swelling of the face, hands, or feet, trouble breathing, and trouble sleeping. To alleviate these symptoms, we recommend drinking plenty of water, get lots of rest, eat lightly, and avoid caffeine and alcohol. Ibuprofen and altitude sickness medication is available for purchase at the General Store in the Administration Building. More information on avoiding dehydration and altitude sickness can be found on the Web ( or by consulting your physician.

If you need a ride between buildings on the YMCA campus, please make a request at the meeting Registration Desk (see above). Rides will be offered in golf carts or vans, depending on the weather.

Medical Services and Facilities

Hospital and Emergency Room
Estes Park Medical Center, 555 Prospect Avenue, Estes Park (970) 586-2317

Estes Park Pharmacy, 600 S Saint Vrain Avenue, Estes Park (970) 586 - 3366
Rocky Mountain Pharmacy, 453 E Wonder View Avenue, Estes Park (970) 586 – 5577