Monday will be a nice day with sunny skies, low humidity and comfy temps. Then the coldest air of the season will come into New England on Tuesday leading to highs in the 50's and frost in the suburbs. It will probably go back above average by the end of the week.
Boston forecast:
Tonight: Any showers fade to clearing skies. Low 50.
Monday; Mostly sunny and breezy. High 70. West wind of 10-20 MPH with gusts to 30 MPH.
Monday night: Clear with lows in the low 40's.
Tuesday; Sunny and breezy. Highs in the upper 50's.
Tuesday night: Clear with frost likely in the suburbs. Temps near 40 in Boston but 30's elsewhere.
Wednesday; Sunny with highs in the mid 60's .
Thursday; A shower possible. Warmer with highs in the mid 70's.
Friday: Sunny with highs in the 60's.