Today is the last day the outside temperatures will be correct for the sap to flow. That being 40s during the day and 20s at night. After today the forecast shows the daytime temps soar to the 50s and the nights don't cool below freezing. It will be interesting to see if the sap just stops, or will it turn the typical yellow indicating the end is here.
Regardless, it's been a great season. Short but sweet... maybe there is one more boil. It would be nice.