The Earth has cooled off 0.56°C since February 2016. The temperature drop is astronomical. The last time we cooled off at least 0.4 C was between 1982-1984 (0.47 C). We have to go back to the early 1900s to see a temperature drop as great as what we have seen in the past two years.
As we descend into Solar Cycle 25, my research shows that the temperatures are expected to be back at baseline average by late 2018 or early 2019 and by 2021, we should be back at 1970’s levels before descend even further back into Maunder Minimum levels.