The climate in Santa Fe can change rapidly and often. In the summer, days can be hot (80’s) and nights quite cool (low 60’s). Santa Fe's climate is dry, with sometimes less than 20 percent humidity. Nights and early mornings are cool, even in July. Also, please keep in mind that Santa Fe's high altitude (7,000 feet above sea level) means air is rarefied and thinner. It usually takes about 48 hours to adjust and staying hydrated helps.