The most common and most likely answer to this crossword clue is the 13 letter word WEATHERBEATEN
W
E
A
T
H
E
R
B
E
A
T
E
N
More clues leading to the result WEATHERBEATEN
Buddy explains!

The straight part
We know that "affected by the elements" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case affected by the elements = weatherbeaten.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 WEATHERBEATEN mean?
WEATHERBEATEN adjective- Beaten or harassed by the weather; worn or damaged by exposure to the weather or the outdoors, especially to severe weather.