Showers will come to an end. High pressure building in from the west will help the skies clear slowly overnight. Temps will fall from the mid 50s to the upper 40s. Winds may become breezy at times.
Colder air aloft will interact with the heating of the day to produce partly to mostly cloudy skies for a few hours in the afternoon. Highs will be noticeably much chillier in the low to mid 50s. Winds will be northwest 5-15 mph. Clouds will break up after sunset and lead to a chillier night with many locations dipping to the 30s by Friday morning.
Clouds will be increasing as a clipper type system approaches Friday. Highs will be chilly in the mid 50s. There could be a few drops in the latter half of trick or treating, otherwise, expect it to be dry but chilly so bundle up.
A strong upper level trough swings in Saturday and the clipper will transfer its energy to a developing coastal low. This low will strengthen and deepen during the day Saturday leading to blustery cold conditions and a few showers which may mix with wet snow. The thermal profile of the atmosphere does support air cold enough to produce a few flurries but the ground is too warm for anything to stick. Strong northerly winds will keep highs in the 40s for Saturday. As high pressure builds in for Sunday, the pressure gradient remains tight as the coastal low slowly skirts away. This will lead to a continued breeze for Sunday and a much colder start in the morning with lows in the low 30s. Highs will only warm to the mid 40s. Monday morning will be the coldest morning with calm and clear conditions. Some areas could start in the upper 20s. Frost may be concern since we have not experienced an end to the growing season. Highs will moderate some to the middle 50s. Milder and continued dry for Tuesday but a weak front coming in overnight may produce a few drops into early Wednesday. Highs both days should hover around 60 degrees.
MaryEllen Pann, Chief Meteorologist
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