Weather Again

What is happening to the weather? Tonight it's almost cold out there compared to what it has been. With the temps in the 70's at night and 80's and 90's during the day 55 degrees is almost cold. I must say it's refreshing after the heat. I'm able to get alot more done outside that has to be done. I guess I shouldn't say to much because in a few more months it'll be 20 below and staying there for a couple more months.