The most common and most likely answer to this crossword clue is the 8 plus 5 letter word OCCLUDED FRONT
O
C
C
L
U
D
E
D
F
R
O
N
T
More clues leading to the result OCCLUDED FRONT
Buddy explains!
The straight part
We know that "the face of this weather condition" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case the face of this weather condition = occluded front.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.