Summary: We remain under a sprawling ridge of high pressure, with the jet streamand its attendant storms/low pressure systems located to our north over southern Canada. This pattern will persist, with fair skies and mild temperatures through the remainder of the week. As the jet stream lifts even farther to our north on Tuesday and Wednesday, even warmer air will enter our region and high temperatures will climb well into the 70s on both days.

A weak wave will pull the jet stream south and its southern margin will come through, manifested as a weak cold front at the surface, Wednesday afternoon and evening. The front should come through dry, with nothing more than a thin band of clouds. Temperatures will be a little cooler on Thursday, but still above normal, reaching the low 70s on average, and skies should remain mostly sunny.

The weak front will move back over us as a weak warm front on Friday as the jet stream retreats back to the north. This will cause more cloudiness on Friday afternoon and night, with a chance of a few scattered showers.

Once the warm front passes, and the jet stream again lifts to our north again, the southwest flow around the semi-permanent subtropcal high pressure system (Bermuda High) to our southeast will push warmer, and even humid, air back into the region. Temperatures look to rise, once again, well into the 70s with at least some sunshine and little chance of rain over the weekend.

Monday Night

Clear, calm and seasonably cool. As on previous nights, patchy fog may form in valley locations

Low temperatures in the low 40s.

Calm winds.

Tuesday

Mostly sunny and warm.

High temperatures in the low to mid 70s in Pittsfield, North Adams, Adams and Williamstown; mid 70s in Stockbridge, Great Barrington and Sheffield and; near 70 to low 70s over the elevated terrain and hilltowns, depending on elevation.

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

Tuesday Night

Clear and not quite as cool as previous nights.

Low temperatures generally near 50.

Light westerly winds.

Wednesday

Mostly sunny, breezy and even warmer. There may be a brief period of increased cloudiness as a weak cold front passes in the late afternoon.

High temperatures in the mid to upper 70s in Pittsfield, North Adams, Adams and Williamstown; upper 70s in Stockbridge, Great Barrington and Sheffield and; low to mid 70s over the elevated terrain and hilltowns, depending on elevation.

West-southwesterly winds increasing to 10-20 mph by early afternoon, with some stronger gusts, particularly over the higher terrain. Winds will shift to west-northwesterly with cold front passage late in the afternoon.

Thursday

Mostly sunny and slightly cooler, with high temperatures averaging in the low 70s. There may be an increase in high clouds during the afternoon.