The season doesn't really bother me (in the UK its never that cold in the winter or that hot in the summer either)
I am rather partial to photography in the winter - there are far fewer people out and about to detract from my landscapes.
Fog can usefully isolate stuff from a distracting background.
Rain brings rock surfaces to life.
What bothers me is the grey overcast skies that last for days on end giving a very boring flat light - we seem to get them a lot in both mid winter and mid-summer.
To me the best light occurs when rain (or occasionally) snow storms are about to descend - the camera and I end up getting very wet - but if I have at least one decent shot in the bag, I can go home happy to dry my kit out.