It won’t be really cold across the northeast quadrant of the U.S. for the rest of the week and into Sun, Oct. 11, 2015. However, the southeastward advance of a Canadian high-pressure system will bring seasonably cool air in the region.
Yes, there could be some scattered light frost across valleys of interior New England by Sunday morning, but, otherwise, look for daytime highs mostly in the 60’s and nighttime lows from the upper 30’s to mid 40’s from New England southwestward into the central Appalachians (Fig. 1). These readings will be near to slightly below seasonal averages.
Aside from some showery weather Thursday and Friday across parts of the region, the weather could allow for a fantastic start to “leaf-peeping” season. As of Oct. 5, 2015, The Foliage Network was reporting the successful start of the southward advance of fall colors (Fig. 2).