Starts to rain as you search for some light (4)
I believe the answer is:
rays
'some light' is the definition.
(I've seen this before)
'starts to rain as you search' is the wordplay.
'starts to' says to take the initial letters.
The first letters of 'rain as you search' is 'RAYS'.
'for' acts as a link.
(Other definitions for rays that I've seen before include "we hope to catch occasionally out of the blue?" , "shafts" , "Beams - fish" , "Narrow beams of light" , "Pencils of light" .)