"Is it cold in December and January?"

Translation: Decemberben és januárban hideg van?

[Freddioso]

So am I right in thinking that adjectives require 'van' in impersonal constructions? So to say 'it's cold' you can't just say 'hideg', it has to be 'hideg van'?

[GregWood15]

Would it be appropriate to use definite articles here as it sounds like a general statement?

[MrtonPolgr]

For which word?

[GregWood15]

Both. For "Decemberben" and "januárban". I was thinking "A decemberben és a januárban hideg van?".