The 30 year average means abousutly naff all that can keep rising for all I care, feb 2009, winter 2009-10, December 2010, January and March 2013, December 2017 and feb and March 2018 all produced more snow than anything I've ever seen in the 90s and early to middle to 00s in my location but that goes to show a changing climate doesn't mean less cold and snow!