Metro Boston, North Shore and Metro West: Our superb weather continues on Monday as June comes to a close. High pressure will maintain a southwesterly flow bringing the warm temperatures. A sea breeze is not likely to occur as it did over the weekend so the coastal areas will also share in the warmer temperatures through the entire day. Overall, Monday will be mainly sunny and warm with southwest winds 10 to 20 mph. High temperatures in the low to mid 80s. Fair skies rule Monday night with mild readings in the mid 60s to around 70 degrees. Southwest winds continue at less than 15 mph.
When we welcome July on Tuesday the weather will be Summer like with warm temperatures and increasingly humid air overspreading the region. By Wednesday, as a cold front approaches from our west, it will be downright hot as many areas may top the 90 degree mark for the first time this season.
Low pressure will emerge out of the Plains States Monday and cross the western Great Lakes into Canada during Tuesday. The associated cold front is currently forecast to be moving slowly through the eastern Great Lakes Tuesday night. With the high moving offshore and the cold front inching closer we are set up for very warm and humid conditions mid week as a moist southwest flow continues. Generally partly cloudy skies both Tuesday and Wednesday with high readings well into the 80s, perhaps low 90s on Wednesday. There is a slight chance of a late day shower or thunderstorm on Wednesday. Overnight lows on Tuesday night may not drop out of the low 70s and it will be humid making for an uncomfortable night.
As the cold front moves closer Wednesday night clouds will be on the increase. There is a chance of a passing shower or thunderstorm. It stays sultry overnight with lows in the low 70s, perhaps 75 in Boston as those southwest winds continue to bring the heat and humidity.
Thursday is not looking so nice at this time. The reason is the cold front will move ever so slowly toward the region and actually wash out before it gets here. But, clouds and scattered showers and thunderstorms are expected to push across the area during the day and unfortunately that threat remains for Thursday night as a second cold front moves toward the region. Whether the timing of the showers is such to cancel or delay any firework displays remains to be seen at this time. Highs on Thursday will still climb into the mid 80s to near 90 with lows perhaps clinging to 70 degrees overnight.
The cold front slowly moves through very late Thursday night or Friday morning. It will move offshore during the day but this will be an all day process. This means the clouds and threat for showers and storms linger on the 4th of July. Temperatures cool back with highs around 80.
High pressure follows for next weekend with pleasant conditions. Highs around 80, lows near 60.
Monday North Shore beach outlook: Sunshine and warm. High temperatures in the low 80s. Southwest winds up to 20 mph. High tide in the mid afternoon. Water temperatures in the low 60s. UV Index very high once again.
Monday evening: Fair skies. Temperatures in the upper 70s. Southwest winds up to 20 mph continue, diminishing toward sunset.