What happened? Where did summer go? Since reaching the lower 80s on Friday, temps have been nowhere close to summer levels as true Fall air has settled on in as highs and lows have actually been below average for the last couple of days. Add in clear skies and light winds with a dry airmass, and overnight lows can get quite chilly. In fact it’s cool enough this morning for frost advisories to be posted across a good chunk of southern New England. Lows in many burbs have fallen into the low to mid 30s while Boston, as of 6am, has bottomed off at 48. The chilliest start to a day we’ve seen since May 16th.
After the cool start, sunshine will bump temps back up into mid 60s this afternoon with light breezes and mostly sunny skies. Tonight, it won’t be nearly as cool as clouds increase and temps only dip down into the 50s.
We’ll start Tuesday off with showers and those showers may linger through midday across Buzzards Bay and the Cape and Islands. Farther north, much of midday into the afternoon will dry out with some returning sunshine near and north and west of Boston. Highs tomorrow reach the low to mid 70s.
Beyond Tuesday, the pattern is complicated, which also means hard to pin down, but I do expect the opportunity for an onshore flow with periodic showers/drizzle hanging around mid to late week, and perhaps into the weekend. How much rain and if it’s a drought denter will be dependent on where a low get’s cut off in the Midwest and how much moisture get’s pumped up into Southern New England. With an onshore flow, expect plenty of 60s for highs and 50s for lows ahead.