I just drove two days at VIR this past weekend. Temps overnight were in the mid 20's. Daytime high's got into the 60's but it took awhile.
I was trying NT01's for the first time. I thought they would be slow to come up to temp with cold air and track. I started them 32 front 33 rear. After one session they were 44 front and 45 rear, too high and they didn't feel great. I was surprised how quickly the pressures came up in the cold weather. I found the 38 front and 39 rear, hot, worked well for me. The pressures were predicatable and consistent once I got them set.
Btw, loved these tires!!