The usually coldest season of the year, occurring between autumn and spring.

It would appear winter has arrived a touch early this year.
We woke to a severe frost.  It is still hanging around and it is 1030.
Not only was there frost but any patches of water have frozen over as well.  The dogs water bucket had a 5mm layer of ice over the top and down the sides, the chickens water has frozen in the container too and the hose is full of ice.
Better get out there and start working again.