This is interesting. Another view of how extreme this March warm spell was. All dates in 2012 have been bolded.
Islip Area (ThreadEx Station)
Extremes
Highest Daily Minimum Temperature (degrees F)
Days: 3/1 - 3/31
Length of period: 1 day
Years: 1984-2012
Rank Value Ending Date
1 55 3/28/1998
2 54 3/21/2012
3 53 3/22/2012
4 52 3/31/1998, 3/17/1990
6 51 3/23/2012
7 50 3/29/2003
8 49 3/13/2012, 3/22/2010, 3/22/2003
Last value also occurred in one or more previous years.
This station's record may include data from more than one, possibly incompatible,
locations. It reflects the longest available record for the Islip Area