Wind terms defined:
Wind is the effect of the sun heating our planet. When the sun sets, the wind usually reduces in speed. The wind can tell us a lot about what is happening and what is about to happen.
When the wind is calm, under 10 miles per hour, it is telling us that there is going to be little or no change in the weather we are currently having.
When the wind picks up in speed it indicates the weather is going to change.
You cannot rely on just the wind to make this determination but it is a good sign that when the wind is picking up, things will be changing.