Organise outdoor entertainment, having good forecast (3,4)
I believe the answer is:
set fair
'good forecast' is the definition.
I don't know anything about this answer so I cannot tell whether it can be defined by this definition.
'organise outdoor entertainment' is the wordplay.
I cannot quite understand how this works, but
'entertainment' could be 'fair' (as in a fun fair) and 'fair' is found in the answer.
The remaining letters 'set' is a valid word which might be clued in a way I don't understand.
This may be the basis of clue (or it may be nonsense).
'having' acts as a link.
Can you help me to learn more?
(Other definitions for set fair that I've seen before include "settled" , "Seeming problem-free - barometer being high" , "likely to succeed" , "with bright prospects" , "Such is a good weather forecast" .)