Weather from south at the present time! (4)
I believe the answer is:
snow
'weather' is the definition.
(snow is a kind of weather)
'south at the present time' is the wordplay.
'south' becomes 's' ('S' can be a synonym of 'south').
'at' means one lot of letters go next to another.
'the present time' becomes 'now' (I've seen this before**).
's'+'now'='SNOW'
'from' acts as a link.
(Other definitions for snow that I've seen before include "feature of 27 [THE BIG FREEZE]" , "that may arrive around Christmas time" , "Flakes overhead" , "Frozen rain" , "Wintry flakes?" .)