Is It Indian Summer Or Just A Heatwave?

For the past couple of weeks it has been hot here in Southern California.  The normal temperatures for the Carlsbad area for this time of year is usually high 60's to low 70's.  This year, weather wise, has been weird.  It is summer heat Florida style.  It is usually a dry heat here and at night it gets into the low 60's but as I write this it is still 76 degrees outside.  In Florida and several other parts of the country this would be no big deal because most people have air conditioning.  In the Carlsbad area it usually only gets this warm one or two weeks a year so most people do not have air conditioning.  My sister's home is one that does not so cooling off, especially at night, is not an option.  Everyday the weather people here in the San Diego area say it is the last day of the heat but then the heat advisory gets extended.  I packed more clothes for the cooler temps and now I should have only packed summer things.  So, maybe this is Indian Summer but California style.  Oh joy!