Here is a slideshow from photos taken of the great spring weather across Northern Middlesex County on Monday. From Friday to Monday, temperatures were well into the 70s, and even the low 80s. Temperatures on Sunday reached 83 degrees in South Plainfield, which was the warmest it had been since October 4th. Monday was almost as warm, but just a bit under 80 at 79.5 thanks to a bit more cloud cover in advance of a powerful storm system. High on Friday was 78 as well.