Look at images of medival times. Notice how the summers seemed
brighter, the spring...times described in song and in tapestries
seem warmer... they figured out that, in fact, it WAS warmer
during that period of time. That's part of the reason why the
bubonic plague spread so rapidly. The summers were practically
tropical and hence the rapid spread and growth of diseases. The
snowy cold we think of for england didn't come about 'til about
the 1600's or so, a period we're still living in today. This is
according to some... "