Normally weather temperatures in Thessaloniki during the time of February is 4 with a general average high of 10 and typical average low being around 2 degrees. For more context we have put some more information below:
 

 

Thessaloniki, Greece Weather in February FAQs

So what weather should I expect to see?

The weather looks like it will be 4.

So what’s it like during the winter?

10.

How does the average temperature differ in Summer and Winter?

The typical temperature variance is about 9 temperature variance

Useful Links: Thessaloniki Weather: Average Weather & Yearly Climate