Open No need for jackets or sweaters. Open Short sleevesduring the day, light jacket for evenings. Crisp days, cold nights. Closed Bring something warm, especially for evenings. The sun makes an occasional showing.
Days are crisp, but plesent.
Closed Sweater and jacket-desert winters are cold. Closed Light jacket for day, something warm for evenings. Occasional rain and high winds, warm days. Closed Light jacket or sweater for evenings. Open Spring wardrobe for days.