Chilly, midweek rain

Tomorrow marks the start of climatological summer, however this week will definitely not feel like it. The current and upcoming pattern is being controlled by a block out west that is sending the jetstream south in a trough over the Great Lakes and northeast. This is a pattern that would be great for snow in the winter, but unfortunately gives us nothing pleasurable during the summer.

Starting with tonight, the departing cold front has introduced gusty northwest winds advecting in frigid temperatures. In fact, scattered showers on the backside of the front across NNE have flashed to snow in some areas! Frost and freeze warnings have been issued across New England as clear skies allow for radiational cooling dropping lows to near freezing by tomorrow morning.

High pressure will be building in across the northeast tomorrow, sliding south of the region during the afternoon. This will help keep skies mostly sunny through the day. However, highs will still struggle into the upper 60's.

Clouds will be on the increase during the evening hours as a frontal boundary with weak low pressure moves NNE and NY state. Moisture will generally be lacking with this feature, so showers will be isolated and amounting to only a couple hundreths of an inch.

The boundary will slide and stall southeast of the area Tuesday morning, and with a continued dry atmosphere, expecting quick clearing during the day. Temperatures will be recover a bit from Mondays chill, with highs making it into the low 70's.

Another wave will ride along the quasi-stationary boundary on Wednesday, triggering elevated warm air advection which will promote the development of clouds and showers through the day. The clouds will keep temperatures down in the 60's, around 10 degrees below seasonal norms.

The wave will move off Wednesday night, dragging the boundary south away from the region. Rain should end Wednesday evening, with partial clearing by Thursday morning. Total rainfall around a half inch is possible. Temperatures will rebound back around 70 on Thursday, and low 70's on Friday as high pressure builds in and skies clear a bit more.

Another system will be rotating south over Manitoba on Friday, with an attendant cold front swinging through the Great Lakes and into New England on Saturday. Again, another round of showers is likely. Some gusty winds may accompany the frontal passage as well.

Energy stuck in the southwest (part of the block that is responsible for the chilly and damp weather we've had) will finally eject eastward next week, with low pressure moving through the plains states. Warm frontal boundary lifts northward on Monday, with with a cold front swinging through Tuesday night. Temperatures will continue to average below seasonal norms, however the pattern should break at that point, and we'll have a shot at some heat toward the end of the month.