Actually, wind speed and wind is caused when air moves from areas of high pressure to areas of low pressure. It is not really caused by the heating of objects by the sun.
If you want to read a little more about this topic to gain a little better understanding, I would visit:
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7am 1mph nne
8-10 2mph n
11 4mph ene
12-1 3mph ene
2pm 2mph e
3 3mph ese
4 3mph se
5 4mph sse
my question is why did it go down to 2 at 2:00. What changed what made it go down at that time?