"Oh, Candlemas beware old man
The wind gale and the storm,
For if you think that winter's dead
It's barely been born,
And if you think that the spring has come,
With the bright sun in the sky
An icy wind blows icy tears
From the corner of your eye"
I posted last year about Candlemas, and here I am again. This year it is much colder and I am more inclined to appreciate Steve Ashley's point. So, how to reconcile the conflict between a logical division of the year by length of the day and our observation that there continues to be cold weather after winter (and for that matter warm weather after summer).
I see two factors at work here, the first being that it should be possible to divide the year up into two "great seasons" of warmth and coldness and that the boundary would therefore be the equinoxes, the dates when the day and the night are both twelve hours long (give or take a few minutes). With this pattern, half of spring would fall within the greater winter and the other half would fall in the greater summer. The same apply to autumn.
The other factor is the physical laws relating to the conservation of heat. It feels like summer through August and into September because the energy provided by the sun is still present as warm atmospheric conditions and warm land surfaces. February and early March feel like winter because a lot of the sun's heat is taken up just with heating that mass of air and the upper layers of the surface.
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