Such weather may keep you in, for there's little sunshine about (5)
I believe the answer is:
rainy
'such weather' is the definition.
'rainy' can be an answer for 'weather' (thesaurus). I'm not certain of the 'such' bit.
'keep you in for there's little sunshine about' is the wordplay.
I cannot quite see how this works, but
'in' is present in the answer.
'about' could be 'a' (abbreviation in Chambers) and 'a' is found within the answer.
This explanation may well be incorrect...
'may' is the link.
Can you help me to learn more?
(Other definitions for rainy that I've seen before include "Drizzly" , "Save your money for this damp day" , "With water falling outside" , "The day one saves for" , "Pluvial" .)