High pressure will slowly move off the coast but will still remain in control for early week. Days like yesterday and today; clear, warm, and sunny skies and clear skies in the evening, will make for cool nighttime temperatures. I spoke to a few people today who said they had to close their windows last night because it was TOO cool.
What? Too cool for September? Although this weekend marks the 'unofficial end of summer,' it is still the Summer season.
These cool temperatures are caused by a little something called....Radiational Cooling.
Radiational Cooling is the 'cooling' of the Earth's surface. During the daylight hours, the Earth is heated. At night, the Earth suffers an overall heat loss to space due to terrestrial (the ground cooling) cool; one would think the opposite of cooling considering Earth is giving off its heat. This cooling process is more pronounced when there are clear skies (NWS).
Most of New Jersey had low temperatures last night (technically this morning before sunrise) in the middle 50s. Central Jersey was a cool 55degreesF with a gusting NW wind that made it feel a lot cooler.
Areas in higher elevations such as Mount Pocono in PA had a low temperature last night of 48degreesF with high temperatures Sunday only getting up to 65degreesF with forecasted lows in the LOWER 40s!
Tonight will be anther cool night. Keep a jacket handy when when out and about at your holiday festivities; lows in the middle to upper 50s. With increasing humidity through the evening and Monday, patch fog can not be ruled out in the morning hours Monday.
Increasing humidity Monday; more moisture in the air equals (a few) more clouds in the atmosphere; expect mostly sunny skies Monday through Tuesday.
Temperatures will remain in the middle 80s Monday but will soon get warm Tuesday and Wednesday which it will be flirting with the 90s, again.
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| Beautiful image over cloud deck at 25,000ft |
~ V.S.
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