It's important to measure exact temperatures when making soap, so a good quality thermometer will be an important part of your homemade soap supplies. (savvyhomemade.com)
When it was about the same exact temperature as it is today! (co2insanity.com)
In the event that your temperature dial doesn't have exact temperatures noted, simply place a thermometer in the center of you refrigerator overnight for a more accurate reading and make adjustments accordingly. (healthy-holistic-living.com)