After a low pressure system moves to the north of New England this morning, high pressure will build back into New England for the remainder of the weekend. The system to the north will drag its weak cold front across the region, though there won’t be much of an air mass change behind it, so temperatures will remain seasonable to mild for New England. Rapid clearing is expected behind the front into this afternoon.
It will be New England’s next system that will usher in a cooler, more October-like air mass into the region. An upper-level system will pass well to the north of New England, dragging its fronts across the region. This may spawn a surface low over New England, which would help create more widespread showers. These showers will move west east starting Sunday night for western New England and moving eastward through the day Monday.
This system will move into eastern Canada by Tuesday morning, which will allow for a drying trend for most of New England. The exception will be eastern Maine, where wetter weather may persist into midweek. This would come as the surface low phases with the upper-low over Canada, allowing moisture to continue to wrap into easternmost New England. For the rest of New England, drier weather will take over starting on Tuesday, though broad cyclonic flow aloft may result in a couple brief, spot afternoon showers, mainly in the mountains.