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Summary: The large surface high pressure system which has dominated our weather this week continues to drift to the east, its center moving well off the coast. However, it will hold sway over our weather for one more day, giving us a mostly sunny and mild Saturday.

Two very weak mid-level disturbances in the westerly wind flow will drift by to our south and east over the weekend. The first will bring some cloudiness into Berkshire County late tonight but most of the precipitation should stay well to our south. There is, however, the slight chance of a sprinkle or light shower toward daybreak, mainly in South County. Skies should then clear for the day on Saturday. A second disturbance will generate a very weak surface low pressure system just off the coast on Sunday. This disturbance will pass closer to Berkshire County. Therefore, Sunday should have mostly cloudy to overcast skies as the southeasterly flow around the weak low brinks a lot of low-level moisture and clouds, with accompanying drizzle and sprinkles, into the county. It also appears that the western edge of the precipitation shield will be very close to us so there is a good chance we will see scattered showers as well, particularly in eastern parts of the county.

A strong surface low pressure system will move north through the Great Lakes and eastern Canada on Sunday night and Monday and drag its trailing cold front through our region with a bout of steadier rain and showers near daybreak on Monday. Temperatures will rise overnight on Sunday to near 60 degrees but once the front clears, temperatures will begin to plummet through the 40s during the day on Monday. However, the jet stream wave pattern will be a little “flatter” (less amplified) and farther to the north than early this week, so the coldest arctic air will stay well to our north. Therefore, it will not be as frigid as early this week, with temperatures more seasonable, with highs in the upper 30s to mid 40s Tuesday through Thursday. Once again (our repetitive autumn pattern continues), sprawling surface high pressure will move in behind the cold front and we should have dry, and fairly sunny, conditions through the entire work week.

Friday Night

Partly cloudy this evening, becoming mostly cloudy after midnight. There is the slight chance of a sprinkle or light shower near daybreak, predominantly in South County. Probability of precipitation 10-20%.

Low temperatures generally in the low 30s, with some mid 30s in South County, near 30 over the elevated terrain.

Light southwesterly winds.

Saturday

Mostly sunny and unseasonably mild.

High temperatures in the mid 50s in Pittsfield, North Adams, Adams and Williamstown; mid to upper 50s in Lee, Stockbridge, Great Barrington and Sheffield and; low 50s over the elevated terrain and hilltowns, depending on elevation.

Light southwesterly winds in the morning, increasing to 5-10 mph in the afternoon.

Saturday Night

Mostly clear in the evening, becoming mostly cloudy to overcast after midnight.

It will remain unseasonably mild, with low temperatures generally in the low 40s.

Light southeasterly winds.

Sunday

Mostly cloudy to overcast with scattered drizzle and sprinkles. There is a good chance of a shower, particularly in eastern portions of the county. Becoming breezy. It will remain quite mild, despite the cloud cover. Probability of precipitation 50%. Most likely rainfall totals 0.10″ or less.

High temperatures in the mid 50s in Pittsfield, North Adams, Adams and Williamstown; mid to upper 50s in Lee, Stockbridge, Great Barrington and Sheffield and; low 50s over the elevated terrain and hilltowns.

Southeasterly winds at 10-15 mph.