Atheists, as winter ends and Spring is very near, will your Atheism be more difficult to maintain?

The days are getting longer, the sun is getting brighter. Its easy to maintain a negative outlook if it's cold, dark and the weather is bleak. But when the weather improves, people's emotional state also improves.

So when the sun is shining people are likely to be more happy, outgoing and optimistic. Doesn't this make it harder to be an Atheist in the spring and summer?