Global warming will do this.
Coldest June 23rd ever
On Saturday in Slovakia the cold was primarily manifested in higher mountain climates. On Lomnicki peak the temperature reached a high of only -2.8 C. This is the coldest high for June 23 in the history of observation, says the Slovak Hydrometeorological Institute.
The peaks of Krivan (2495 m) saw a weak snow cover, while Sedielka (2376 m) saw ankle-deep snow on Sunday.