I've heard lots of different signs,but like rugs mentioned,the catapillars on the only ones I can ever remember.

From the almanac I get,it predicts it will get dark towards night,light during the day.Cold in the winter,with a warming trend towards spring,summer will have hotter days,with cooler weather as we move into fall.They base this on records for the last 27,930 years.
Have a underground weatherman type of day!