The most common and most likely answer to this crossword clue is the 7 letter word WINTERY
I've seen this crossword clue in The Times
W
I
N
T
E
R
Y
More clues leading to the result WINTERY
Buddy explains!

The straight part
We know that "cold weather" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case cold weather = wintery.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does WINTERY mean?
WINTERY adjective- Suggestive or characteristic of winter; cold, stormy.
- Of precipitation, containing sleet or snow.
- Aged, white-haired.
- Chilling, cheerless.