Keep in mind that it's 3C average, over the entire globe, over a year. The locale, variance, seasonality all matter. Like, suppose that you are "lucky" in that your region gets only the average of 3C, so your year is 3C warmer on average, but that only happens during 3 months of the year, so you get 12C hotter in summer--basically, el fuego--or you get 12C in winter--basically, no more winter.
A warmer winter can be catastrophic for forests in cold climates that depend on freezing temperatures to kill off invasive bugs. So an entire forest can be absolutely ruined by a damn beetle.
A warmer winter can be catastrophic for forests in cold climates that depend on freezing temperatures to kill off invasive bugs. So an entire forest can be absolutely ruined by a damn beetle.