There is a mistaken report in a major media outlet claiming the volcano is going to change the "climate." That is incorrect. While it is likely the volcano will have an effect on the weather for a period of months or even a year or two, it will have no effect on the climate (long-term weather).
It will cool the Northern Hemisphere's weather and it may have other effects. For example, the extreme Mississippi Valley floods of 1993 were related to a volcanic eruption. It is far too soon to speculate what effects this volcano will have on the weather of 2018.