There is no such thing as “earthquake weather”. Statistically, there is
an equal distribution of earthquakes in cold weather, hot weather,
rainy weather, etc. Furthermore, there is no physical way that the
weather could affect the forces several miles beneath the surface of the
earth. The changes in barometric pressure in the atmosphere are
very small compared to the forces in the crust, and the effect of
the barometric pressure does not reach beneath the soil.
From 1975-1995 there were only four states that did not have
any earthquakes. They were: Florida, Iowa, North Dakota,
and Wisconsin.