BETHLEHEM, Pa. — If you’ve been banking those vacation days and looking for the perfect time to get outside, wait no more.
The National Weather Service said the next couple of days will feature “the most pleasant weather of the summer.”
It’s all thanks to a cooler and much drier air mass that will build into the region Monday and Monday night, forecasters said.
Dew points are expected to be in the lower 60s, and may even fall a bit more in the afternoon during peak heating, according to the latest NWS forecast discussion.
The dew point is the measure of the amount of moisture in the air, and a higher dew point — as we’ve been experiencing much of the summer — indicates more moisture and brings that muggy feeling to the outdoors.
Highs are expected to top off in the low to mid-80s, and following another cold front Monday night, lows will be in the mid-and upper 50s.
(3/3) Today will feature mostly sunny skies with seasonably warm temps and, as mentioned, lower humidity! Today through Wednesday will probably be the 3 best weather days of the summer so far.
— NWS Mount Holly (@NWS_MountHolly) July 21, 2025
For your forecast, go to:https://t.co/IqjGqGzzwq#NJwx #PAwx #DEwx #MDwx pic.twitter.com/TCn1GzIQLl
Dry days, clear skies, late-week scorcher
High pressure will influence our weather both Tuesday and Wednesday, the weather service said, bringing dry conditions and sunny skies.
Highs on Tuesday will be in the lower 80s, with dew points in the 50s, but those numbers will begin to creep up on Wednesday, with highs in the mid- to upper 80s expected.
Surface dew points will also creep back into the 60s, the weather service said.
But “hot and humid conditions return with a vengeance” by late week, with highs on Thursday returning to the upper 80s to around 90, with dew points in the 60s, the weather service said.
Forecasters say heat advisories will likely be needed on Friday for high temperatures in the low to mid-90s and max heat index values ranging from around 100 to as high as 105 across the region.
A cold front approaching the area could spark showers and thunderstorms Friday night, but it looks like we’re in for a steamy weekend.
Highs are expected to be in the upper 80s to near 90 both Saturday and Sunday, with max heat index values nearing 100 degrees across parts of the region.
Officially, it would mark just our second heat wave of the year going strictly by temperatures of 90 degrees or above.
But the “feels like” temperatures have been in the 90s for much of the month thanks to a continuous stretch of dew points in the 70s.
