The weather forecast for Boston indicates an increase in humidity and the likelihood of thunderstorms starting Wednesday evening. High temperatures will reach 88°F on Wednesday, followed by a humid Thursday with a high of 90°F and scattered thunderstorms expected in the afternoon and evening. Late-night showers are anticipated on Friday, with a high of 84°F. The weekend will begin with early showers on Saturday, but conditions will improve as skies clear later in the day, bringing a high of 86°F. Sunday will see a reduction in humidity and a chance of night showers, with temperatures reaching 90°F. By Monday, pleasant and cooler weather is expected, with highs around 80°F, and Tuesday will follow suit with sunny skies and a high of 78°F. Overall, the forecast suggests a transition from humid and stormy conditions to a more comfortable and cooler weather pattern as the week progresses.