The most common and most likely answer to this crossword clue is the 10 letter word ASTROLOGER
I've seen this crossword clue in The Guardian
A
S
T
R
O
L
O
G
E
R
More clues leading to the result ASTROLOGER
- Star analyst runs over diary penned by Daisy
- Realtors go crazy for expert on houses
- Star student in miserable Oslo garret
- Expert seeing future developments emerging from present houses?
- One who looks at signs: ‘logo-starer’, fancifully
- Grant for one when time’s right
- Fortune-teller and rock star featuring on old record by Queen
- Sign reader lost, ergo a lost traveller, ultimately
- Forecaster who goes round the houses?
- Sky pundit?
Buddy explains!

The straight part
We know that "Forecaster" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case forecaster = astrologer.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 ASTROLOGER mean?
ASTROLOGER noun- One who studies or practices astrology.