Projections of snow cover metrics ] suggest a further decrease in snow water equivalent  and snow cover extent , though the inter-model spread is considerable  . The projected CMIP6 SCE and SWE changes share the broad features of the CMIP5 projections: SCE is expected to decrease in the Northern Hemisphere by approximately 20%, relative to the 1995-2014 mean value, around 2060 and stabilise afterwards under the RCP2.6 scenario, while the RCP8.5 scenario leads to snow cover losses up to 60% by 2100 . Regionally, the SWE loss will probably lead to more frequent snow droughts; for example, the frequency of consecutive snow droughts is projected to increase to 80-100% of years at 4℃ warming in western Canada  and 42% of years under the RCP8.5 scenario in the western USA  by 2100. Thus, by the mid- to late 21st century, for more than 2/3 of snow-dominated areas in the western USA, the ability to predict seasonal droughts and prepare robust water management plans will decline  .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report