Daily Archives: July 20, 2021

NYC Weather Update – Jul 20, 2021

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A brief warmup Tuesday as highs rise into the upper-80s to near 90ºF before a cold front swings through Wednesday bringing showers and thunderstorms. Seasonable and drier conditions behind the front in the mid-80s to end off the week with plenty of sun.

Rest of today – mostly sunny with high pressure briefly building and temperatures rising to 90ºF. Overnight lows dropping into the low-70s.

Weather Prediction Center surface forecast for 8 AM Wednesday, a cold front will be approaching from the north and west.

Wednesday – partly cloud with a cold front crossing the region during the day. High temperatures in the mid to upper 80s. Showers and thunderstorms possible in the evening. Overnight lows in the upper-60s.

Thursday – drier, cooler, with high temperatures in the mid-80s and mostly sunny skies. Overnight lows in the upper-60s.

GFS 500 mb temperature, height, and wind for Friday at 8 AM. Heights will drop around a closed low centered over the Canadian Maritimes, leading to seasonable temperatures. Some of the energy rotating around this low could bring scattered showers and thunderstorms to the area.

Friday – high temperatures again in the mid-80s with partly cloudy skies and chance of showers and thunderstorms. Overnight lows in the upper-60s.