There is one more mild day ahead for Southern New England before the harsh reality of mid-autumn hits hard. Monday night will not be particularly cool, with lows in the 40s to low 50s under partly cloudy skies. It will stay mild ahead of a cold front on Tuesday. The wind will be out of the southwest and highs will be in the low 60s near the coast, and mid to upper 60s inland. Sunshine in the morning will give way to afternoon clouds. It will turn cooler late in the day.
The real fun and games start on Wednesday as colder air rushes in at the same time that a storm develops along a departing cold front. The result is a good possibility of a raw, rainy day for most of Southeastern New England. It is possible that there may be snowflakes mixed in with the rain, especially in the higher terrain of interior Southern New England. The temperature will struggle to reach 50°, and if it rains it will drop into the low to mid 40s by late in the day. It will be a very cool night at Fenway for the first game of the World Series.
Wednesday night will become partly cloudy to mainly clear, breezy, and cold. Lows will be in the mid 30s to low 40s by dawn Thursday. Thursday afternoon, while partly cloudy, looks very cool. Highs will be in the upper 40s to low 50s, and a gusty westerly wind will make it feel colder. Skies will clear Thursday night, and the temperature will tumble into the 30s.
The unseasonably cool weather will be staying through the weekend. Highs will be in the upper 40s to low 50s Thursday through Sunday. The coldest point will likely be Saturday morning when the temperature may drop below freezing in most of Southeastern New England away from the coast. Friday should be mostly sunny. Saturday will feature increasing clouds with the chance of a few showers near sunset. Sunday looks partly cloudy.