Why do almond trees some years hardly produce any almonds, and what do you advise to correct the situation? Subject trees are planted above 1, 500 feet. It is very cold sometimes, especially in December.
This article discusses how to properly grow and care for Almond Trees https://www.gardeningknowhow.com/edible/nut-trees/almonds/growing-almond-nut-trees.htm
Hopefully, you can determine the answer to your questions from this.