The trick to dressing in Santa Fe is layers. Even in winter, there are warm sunny days where a sweater is enough during the day, but warmer clothing is needed when the sun sets. Also, windy days call for more outerwear. Be sure to bring a hat, gloves and boots or shoes that work in snow. If you plan to ski, hike, snowshoe etc. bring long underwear and appropriate outerwear.
Again, layering is essential. Some of the heaviest snows can come in late March, through April and sometimes there is even snow in early May. Again, layering is key. It’s not unusual to have days in the 60s in early spring. Sixty here feels warmer than the same temperature in a damper climate. Throw a pair of linen or lightweight pants or skirt and a lightweight top or two in your suitcase. You’ll see sandals, slides and mules on feet when the weather starts to warm up.
During the day, shorts or linen or lightweight pants, skirts, sundresses and other typical summer gear are appropriate. The nights get cool and you will want something warmer with you. If you go higher up in the mountains, you may need a sweater during the day as the temperatures can be twenty or so degrees cooler. Also, bring an umbrella. July and August are referred to as “monsoon season”. The typical weather pattern can include heavy thundershowers late afternoon or early evening, which can last a brief minute or even an hour or more. The temperature can drop 20° in a matter of minutes, so be prepared. Also, because of the sun, don’t forget your hat.
This might be the best time of year, weather wise in Santa Fe. The temperatures tend to be mild, the days sunny and the nights crisp and cool to cold. Again, layering is the key. Sandals are still appropriate, but you want closed toe shoes, too. A heavy sweater or coat may be needed in the evening. During the day, shirt sleeves to a light sweater should suffice.
from: Santa Fe Travelers.com