NYC Weekend Weather – Sept 27, 2019

High pressure and fair weather will get punctuated with the passage of a cold front scheduled to push through overnight into Sunday. This front could touch off a few thunderstorms. Temperatures during this time will be slightly above average in the upper-70s. A cooler airmass should finally move in Monday with more easterly onshore flow.

Rest of today – sunny with high temperatures in the upper-70s. Overnight lows in the low-60s.

Weather Prediction Center surface forecast for 8PM Saturday

Saturday – warmer, with high temperatures around 80°F and sunny skies. Overnight lows in the upper-60s. Scattered thunderstorms are possible overnight as a cold front pushes through

Sunday – sunny again with high temperatures in the upper-70s. Despite the cold front, we should see some warmth from downsloping northerly winds and subsidence in the wake of the frontal boundary causing compressional warming. Overnight lows in the low-60s.

NAM model output for 2PM Monday, mean sea level pressure and 10 m above ground level winds. Note the easterly flow in NYC imparted by the high pressure to our east-northeast

Monday – another sunny day with cooler high temperatures in the low-70s, overnight lows in the low-60s.

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