This spring has been quite a turnaround from the past few years. To put this into perspective, the first half of climatological spring (March 1 through April 15) has averaged about 12 degrees warmer than 2008 or 2009 to this point and 9 degrees warmer than 2007. March finished as the 4th warmest on record and the first half of April was the 5th warmest since 1881. You would have to go back to 2005 to find a spring with temperatures close to this years and even that spring was 4 degrees cooler than this year.
In fact, this spring to this point is ranked as the 2nd warmest since 1881, surpassed only by the remarkably warm spring in 1910. That year the average temperature was nearly 5 degrees warmer than this year. As we know, the weather changes quickly in this area, but for now, we are in the middle of the warmest spring in 100 years.