January thaw is a term applied to a thaw or rise in temperature in mid-winter found in mid-latitude North America.

What does thaw mean in cooking?

The process of warming food that has been frozen so that the food can be eaten or prepared to be served. As food warms, it become susceptible to bacterial growth so it is wise to understand that different foods should be thawed at different lengths of time and may require different methods for the thawing process.

Does thawed mean unfrozen?

to cause to change from a frozen to a liquid or semiliquid state; melt. to free from the physical effect of frost or extreme cold; bring to a more normal temperature, especially to room temperature: I took the steaks out of the freezer and thawed them. to make less cold, formal, or reserved.