The most common and most likely answer to this crossword clue is the 8 letter word DRAUGHTY
I've seen this crossword clue in The Times
D
R
A
U
G
H
T
Y
More clues leading to the result DRAUGHTY
Buddy explains!
The straight part
We know that "Cold and windy" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case cold and windy = draughty.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 DRAUGHTY mean?
DRAUGHTY adjective- Characterized by gusts of wind; windy.
- (of a building etc.) Not properly sealed against drafts (draughts).