A solid summer weekend is expected in the Boston area, with temperatures in the mid to upper 70s near the coast and rising to 80 degrees elsewhere. Spot showers are possible both afternoons due to slight instability in the upper atmosphere.
However, a significant warmup is expected early next week as a massive heat dome forms in the Midwest and Mid-South. Highs will leap into the 90s from Wednesday through Friday, with the hottest day being Thursday, when highs will reach the mid and upper 90s. Heat indices are likely to top 105 degrees, making it essential to take precautions against overheating.
Original reporting: NBC10 Boston — read the source article.