It's not Local
Warming, it's Global
Warming. I live in Finland and I have never seen that warm winter before. But that also doesn't matter. We need to look things in global scale.
Right now global average temperature is about 13 C (55 F) and when the temp rises, let's say to 16 C (61 F). What you will see at your yard?
Depends on where you live and how/if air currents will change. If you live in area where local average has always been over 16 C (61 F), then there is some probability that you may notice lower
temperatures. Because if new air currents bring air from different regions, they are probably colder than the area you are living in.
This is of course only one scenario with multiple factors.
It may also be that the current isn't strong enough to cool down the temperature, or that the current already did
cool temperature before it changed. Or maybe you live in area where there isn't such effect from air currents and thus you will simply notice increase in temperature.