Seasonal Gradations

In the same vein as my post about the color green, I had a thought today about seasons.

Today is August 28, and we're in the middle of a heatwave here in Portland. This doesn't seem especially remarkable. It's August, the dog days of summer -- of course it might get hot.

However, once September rolls around -- just a few days from now -- then it would seem worthy of remark. September is Fall. Fall is cool. A hot day in September isn't shocking, but it's not something taken for granted like a hot August day is. September is fall. Fall is cool. A hot day in September yields comments like "man, it's stayed hot late this year!"

August is summer and September is fall, and there is not a smooth gradation between them. February and March, aka winter to spring, is the same. Snow on February 28? Sure, it's February -- dead of winter. Snow on March 1? That's spring snow -- weird!

November/December (fall/winter) is a little less disjointed, but still has a clear break. Snow in December is completely normal, snow in November feels very early for snow.

The only seasonal break that, for me, has a truly smooth gradation is spring into summer over May and June. I can't think of a weather event in May that I'd think "wow, it's early for that" or one in June that I'd think "wow, it's late for that" (save something truly extreme like June snow). And that made me realize that I think of summer and spring as basically the same thing -- summer is spring, only more so.

Spring and summer are the warm seasons, and winter and fall are the cool seasons. Winter and fall further get divided into snow/no snow, but spring and summer have no such divisions. So spring can fade smoothly into summer without anything feeling weird about it -- the only such smooth gradation amongst all the seasons.