When Does Maple Sap Run?

Maple sap runs when the temperatures fluctuate from the teens and low 20's followed by a quick rise in temperatures to the 40's and above.  Using the graph above you can quickly see when the sap will flow.  My husband created this forecasted temperature and precipitation graph which has been an invaluable tool for maple syrup season and gardening.

According to the graph you can quickly see when it will precipitate (green colors) and when to cover the garden plants (the red line is temperature and the blue dotted line is 32°F -- freezing).  The best thing is, you can get this for any location in the USA. Simply go to this website: http://preview.weather.gov/edd/ and click your location on the map and this graph will appear. This website works best on a desktop computer or tablet, not a phone.

We hope you find this tool useful for your syrup and garden planning activities!!

Our first maple syrup boil this year, February 8, 2015.

Here is another maple sap run later in the season that shows temps reaching the 50's and then plummeting down to the teens.