We're farther south than Dallas, Phoenix and San Diego.
Many other factors contribute to our weather, including breezes off the Gulf of Mexico and winds from the north. We've had discussions about Heat Zones, too. Zone 8 in Georgia is vastly different from Noelle's Zone 8 in Arizona and Zone 8 in the PNW. Water is a mediating factor there.
Lichens and moss on old heart pine.
An interesting way to study the march northward of Spring in the northern hemisphere is at the Journey North web site. February 4 is the next update.
Do you know your latitude? Do you know which bloggers garden at a latitude similar to yours?