With the recent bitterly cold temperatures this country has seen during the polar vortex a few questions have come up regarding how oil paints stand up to the cold, how paints should be stored and what issues may occur due to paints being exposed to frigid conditions. The short answer is, they do fine.
Oil paints are not affected by freezing or sub zero temperatures. The freezing point of linseed oil is -4.27F/-20.15C. While we definitely endured temperatures and wind chill factors below this threshold the effects of thawing out frozen linseed oil shows no alteration in viscosity, color, clarity or the ability to polymerize.
This automatically brings up another subject, freezing your palette in between painting sessions. This is or has been a sworn by method of many painters to keep their paints from drying out when not in use. Most freezers are set at about 0 F, which is above the freezing point for linseed oil, so technically it never really freezes. What it does is slow down the oxidation thus slowing down the drying. As always we feel the need to mention that we never endorse storing paint near food or near utensils used for eating.
Below is a link from a great article in Just Paint that was written back in 2004 by Prof. Frank N. Jones from the Coatings Research Institute at Eastern Michigan University. It explains the longevity of oil and acrylic paints and paintings and deals largely with the limitations thereof.