How to foretell at least one growing season (90 days) ahead, and
sometimes two full seasons (180 days), what the main features of the
weather will be, with accuracy of about 90% and for the greater part,
get it right too. For many years David has collected weather lore and
ancient records and compilations of weather observations to enable him
to become the foremost authority on nature based forecasting. Here you
too can become an expert on producing detailed weather forecasts using
the data you can collect yourself.