Some weather broadcast around noon (4)
I believe the answer is:
snow
'some weather' is the definition.
(snow is a kind of weather)
'broadcast around noon' is the wordplay.
'broadcast' becomes 'sow' (sowing is a kind of broadcasting).
'around' indicates putting letters inside.
'noon' becomes 'n'.
'sow' enclosing 'n' is 'SNOW'.
(Other definitions for snow that I've seen before include "Weather condition" , "Ice crystal precipitation" , "Cocaine (slang)" , "Basic White Christmas ingredient" , "that may arrive around Christmas time" .)