"If a cold August follows a hot July, it foretells a winter hard and dry." August 2014 here on Roundtop was a bit colder than average but not by very much. I might say this means an average or slightly colder than average winter but nothing to get your knickers in a twist over.
"For every fog in August there will be a snowfall in winter." Hmm, we did have a fair amount of fog on those gloomy August days.
If anthills are high in July, winter will be snowy." I didn’t really look.
"Onion skins very thin, mild winter coming in." Truthfully, the onion skins look pretty normal to me, but I’m no expert.
I’m sure you’ve all heard some of the other ones—thick animal coats equal a tough winter; squirrels frantically gathering nuts, thick corn husks are all supposed to equal tough winters. My animals are only just starting to shed so it’s too soon for me to tell about that one. The squirrels aren’t doing much of anything unusual yet and the corn husks, well, I’m about as much an expert with those as I am with onion skins.
For many of the truisms, it’s still too early to see. October and even November weather is what most of them go by to predict the winter ahead. So stay tuned. At the moment, the signs are very vaguely pointing towards an average or perhaps a slightly colder than average winter, but nothing looks dire. At least not yet.