Forecast from pair before proclamation (7)
I believe the answer is:
predict
'forecast' is the definition.
(synonyms)
'pair before proclamation' is the wordplay.
'pair' becomes 'pr'.
'before' says to put letters next to each other.
'proclamation' becomes 'edict' (I've seen this before).
'pr'+'edict'='PREDICT'
'from' is the link.
(Other definitions for predict that I've seen before include "act as oracle" , "Anticipate" , "Prophesy - portend" , "Forecast" , "Divine" .)