Monthly average temperatures for NJ last 70 years....
In degrees Farenheit
January - 31.2
February - 31.9
March - 40.3
April - 50.6
May - 61.0
June - 69.8
July - 74.5
August - 73.1
September - 66.3
October - 55.4
November - 45.1
December - 34.4
Daytime only temps would be several degrees higher.
Loved it when I lived there and love it now.