A strong trough for this time of the year entered the region today, bringing in mostly sunny skies, breezy NW winds and temperatures 5-10 degrees colder than average. Chilly temperatures will return again tonight with clear skies and lows falling into the mid 40s to mid 50s away from NYC and the coast. A gradual warming trend will return through the weekend and next week as temperatures gradually return to near and eventually above average, with 90s likely to make a return.
Wednesday, August 14 Observations:
A strong shortwave moved through the region last night, with a westerly flow aloft bringing a cooler Canadian air mass into the region with 850mb temperatures near 6-8C. Along with a breezy NW wind, this resulted in temperatures 5-10 degrees colder than average despite mostly sunny skies in place, with highs peaking in the low 70s inland and the mid 70s for the rest of the area. While such temperatures were observed at times this summer such as on August 1 due to cloud cover and rain, it is less frequent to see such temperatures with mainly sunny skies. The highest temperature was 77 degrees in JFK, and the coolest high temperature was 70 degrees in Sussex, NJ and Port Jervis, NY.