Plant species differ in that renewed growth in spring can be triggered by day length or by temperature or else by a combination of both  Day length is the same, year after year, for any given date
Ttherefore, any plant species that starts to grow again on widely different dates in different years resumes growth at least in part in response to temperature
In the Crawford area, easterly winds mean rain will come and westerly winds mean dry weather will come; winds from other directions do not occur. Ttherefore, since it is currently raining in Crawford, there must be an easterly wind blowing there now.