DAYS 1-5 (APRIL 30 – MAY 4)
Last day of April – last day of impact from low pressure spinning offshore. The wind will be down from yesterday but it’s still to be cool with some clouds rotating around the back side of the low pressure area in our sky. Sunday, high pressure builds in with a very lovely day to start the month of May. Monday, low pressure in the Great Lakes stretches its way toward New England via New York, and as we often see in a pattern when things are not moving rapidly, this system gets pulled apart with the old low hanging back and its frontal system stretching out and trying to form a new low as it passes by. It will partially fail in that atmospheric endeavor but not enough to spare us from a cloudy sky by later Monday along with a risk of some light rainfall that night. I expect that the new low that does form, a fairly small and weak one, will exit the area early Tuesday as the old original low moves away via eastern Canada, with a little bubble of high pressure moving in to improve our weather during that day. But things at that time will start to move a little more quickly as the pattern evolves into a block that features high pressure in Canada and low pressure systems moving eastward to the south of that, so that our next unsettled weather system is already moving in Tuesday night into Wednesday with more rain.
TODAY: A lobe of high clouds dims the sun north to south this morning. Sunshine and passing clouds this afternoon. Highs 51-58. Wind N 5-15 MPH, higher gusts possible midday and afternoon.
TONIGHT: Partly cloudy evening. Clear overnight. Lows 34-41. Wind NW under 10 MPH.
SUNDAY: Mostly sunny. Highs 60-67. Wind W 5-15 MPH.
SUNDAY NIGHT: Mostly clear. Lows 42-49. Wind variable under 10 MPH.
MONDAY: Increasing clouds. Highs 57-64, coolest coast. Wind SE 5-15 MPH.
MONDAY NIGHT: Cloudy. Periods of light rain. Patchy fog. Lows 48-55. Wind E up to 10 MPH.
TUESDAY: Clearing. Highs 60-67. Wind variable becoming SW up to 10 MPH.
TUESDAY NIGHT: Clouding up. Chance of rain overnight. Lows 46-53. Wind SE up to 10 MPH.
WEDNESDAY: Cloudy with a chance of rain morning. Breaking clouds afternoon. Highs 55-62, coolest coast. Wind S 5-15 MPH shifting to NW.
DAYS 6-10 (MAY 5-9)
Large-scale pattern: Blocking with high pressure in eastern Canada and slowly eastward-moving low pressure areas to the south of that. We’re vulnerable to unsettled weather especially in the late May 5 to early early May 8 time frame. Doesn’t mean clouds and precipitation the entire time. It means we’re vulnerable to unsettled weather. Some of this activity may stay to the south. Temperatures below normal.
DAYS 11-15 (MAY 10-14)
Similar pattern, weak blocking favoring cooler than normal temperatures. Must watch systems coming from the west, but they may be weak and/or pass to the south keeping us on the drier side.