Stansted airport current + forcast. These are normally pretty good.
TAF: EGSS 121059Z 1212/1318 23009KT 9999 FEW040 BECMG 1212/1215 33010KT 6000 -RA BKN010 TEMPO 1212/1214 RA BKN008 PROB40 TEMPO 1214/1216 3000 RASN BKN004 TEMPO 1216/1219 31018G30KT 0800 SN BKN002 PROB30 TEMPO 1216/1219 +SN BECMG 1219/1222 9999 NSW BECMG 1221/1224 27009KT TEMPO 1306/1309 27022G35KT 3000 SHRASN BKN005 PROB30 TEMPO 1306/1309 1000 SHSN BKN002 TEMPO 1309/1318 27022G35KT
So yes to snow albeit unlikely to be heavy snow, but they are saying that the event will finish sometime between 7pm & 10pm. I guess we new that anyway. Next TAF is due out soon so the update will be interesting.