As Boston prepares for the oncoming shift in weather, residents can expect a series of atmospheric changes ranging from sunny skies to potential thunderous outbursts toward the end of the workweek. The National Weather Service is predicting a sunny Thursday with highs nearing 85 degrees and a pleasant south breeze. Meanwhile, the evening promises to remain mostly clear with lows dipping to around 66 degrees.

Friday's outlook, however, anticipates a constant push-pull of isolated showers and developing thunderstorms as the day progresses. With the humidity clawing its way back and temperatures climbing to a high near 87, the afternoon could see scattered showers and thunderstorms, particularly between 3pm and 5pm, then likely transitioning into a general rainfall accompanied by the occasional thunderclap as the night encroaches. The storms, balancing a southwesterly wind around 14 mph, may deliver new rainfall amounts of less than a tenth of an inch, or significantly more during thunderstorms.

According to NBC Boston, the incoming cold front set to trigger these storms is expected to slow down by late Friday afternoon, which could potentially limit severe weather conditions, centering more west of Interstate 128. The same storm system, possibly of tropical origins and lingering just offshore, is slated to interrupt the usual pace of clearing through Saturday morning.

Despite the soggy commencement of the weekend, Saturday may reward the city with some sun and much lower humidity levels. The rogue showers, hanging around from the night before, will make way for partially sunny skies with highs hovering around 76 degrees. And with Sunday fast approaching, Boston is looking at a day filled with sun and a comfortable high near 77—a stark contrast to the discord of Friday's thunderous affair.

As the new week dawns, Bostonians should brace themselves for a spike in temperatures. Tuesday is forecasted to usher in a heatwave with the mercury potentially soaring to scorching highs near 88 degrees. The wave of heat, which could make it feel like it's over 100 degrees due to high humidity, is a reminder for the city's residents to stay hydrated and prepare for an extended duration of intensive summer weather.