It is 45 degrees here in the Poconos this morning - - about 75 miles from NYC as the crow flies, but here the elevation is about 1400 feet.
Of 11 tomato plants - some as high as my waist and two feet across (covered with blossoms)- - only two have been able to set fruit at these very cold night time temps. Forecast indicates low to mid-50’s at night for the next week at least. Tomatoes won’t make fruit at these low temperatures.
If you look at http://www.spaceweather.com a Russian volcano has spewed SO2 into the air in the far north which will make the situation even colder since SO2 reflects sun light.
oops, wrong blackberries...