Wintry weather (4)
I believe the answer is:
snow
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">wintry weather</span>' is the definition.<br/ ><span class="explanation-format__explanation">(weather occurring in winter)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for snow that I've seen before include "It falls in flakes" , "Jon - - (Ch.4 News)" , "Wintry flakes?" , "Precipitation falling as flakes" , "Settler" .)