Bostonians enjoyed a pleasant Father's Day with morning sun and a few afternoon clouds, letting dads and their families savor the day in low to mid 70s temperatures. As night falls, the weather will maintain its composure, with partly cloudy skies and lows settling into the low to mid 50s, as reported by NBC Boston.

Looking ahead, tomorrow promises warmer conditions with a slight uptick in humidity and highs reaching into the low 80s. The city's northern regions may experience a stray sprinkle or isolated shower. However, this will be just a preliminary breath before a heavier wave of heat descends upon the region from Tuesday through Friday, when high temperatures are expected to challenge records. Some areas may feel the brunt of heat indices tipping the scales between 95 and 105 degrees Fahrenheit.

The National Weather Service echoes the mounting heat with a forecast indicating that Tuesday's high will verge on sweltering at 94 degrees, only to be outdone by Juneteenth's near 97-degree peak. The forecast insists the mercury will flirt with an almost unthinkable 99 degrees by Thursday.

Nighttime will bring scant relief from the heat, as lows are expected to hover around the low 70s, but even with the lingering warmth, eyes should glance toward the volatile skyline by week's end. Friday introduces a simmering chance of showers and thunderstorms, with NBC Boston detailing a precipitative repeat for Friday night, though chances hold steady at 40 percent.

As the week ends, Boston may have rain and thunder until Saturday, possibly giving a break from the ongoing heat. If you have outdoor plans or delayed Father's Day celebrations, stay updated on the weather. Stay hydrated and find shade as the city prepares for a possibly record-breaking heat wave.