We had this same variety of potato as ‘new’ potatoes back in the beginning of July, almost two months ago. Now the potatoes are fully matured and are best stored slightly warmer than refrigerator temperature (45-55F). Low cupboards generally work well and are what we’d recommend for where to store the potatoes now. However, if you suspect that the storage space might be warmer than 75F, keeping the potatoes in the crisper box of the refrigerator might be a better bet for optimal longevity/quality.