Teacher writing home learning

The teachers all went on a writing course today and I am so excited about what I learned, because we will use it in class together.  


I wonder if you can guess the time of the year my poem describes?


The sun sits low, catching my eyes in a flash
The blue sky lays gently, watching from above
The skeleton trees stand upright like soldiers on duty
The wind whips like a biting razor

Have I used the name of the season in my poem?  How can you tell what season I am talking about?
Image from geograph.org.uk