Share, IMO, in the past farmers used to look at the animals' furs to determine how the winter temperature would be like. So, before the start of this winter, the animals in your region of the country may have had a very thick growth of hair in preparation for this winter. :)
But, in this modern times, there are weather data from NOAA and other government agencies which can be used for weather predictions through complicated mathematical simulations. If they ever invent the quantum computer, weather prediction should become an exact science.
