TODAY: Partly sunny and very warm, but with rather low humidity. High: 89
TONIGHT: Mainly clear. Low: 64
SATURDAY: Turning out hot and a bit more humid with a mix of sun and clouds. A t-storm in parts of the area late. High: 91 Low: 69
It was a comfortably warm and mainly dry Thursday with refreshingly low humidity, especially by July standards, with seasonably warm highs mostly in the mid to upper 80s. Outside of a stray shower or two mostly across southeastern Pennsylvania and southwestern New Jersey, it was also a mainly dry mid-summer day, and we’ll wrap up the week with a mostly dry forecast as well. High pressure to our north will slide across New England but continue to control our weather, keeping us rain-free and also fairly comfy through the start of the weekend, before both the heat and humidity begin to inch up by Saturday and Sunday, but only to seasonable mid-July levels. There’s no long-lived bouts of oppressive heat in our forecast, with another shot of comfort expected by the middle of next week after three or four hot and humid days. As the temperatures and dew points rise, so too will thunderstorm chances, with Saturday night and Sunday and especially next Tuesday afternoon and night the best chances for some thunder, lightning, and rain.
This past night was another fairly comfortable one for sleeping to keep the windows open with most locations dropping well down into the 60s for low temperatures. The typical higher elevation cooler spots in the Poconos and northwestern New Jersey even saw some 50s. Some high clouds worked their way southward from the Great Lakes and Canada, well out ahead of a complex of showers and t-storms in that area, but we certainly didn’t see any rain…just partly cloudy skies.
If you liked Thursday, you’ll love our Friday as we should see a rain-free day with a mix of sun and clouds and afternoon high temperatures climbing into the upper 80s and perhaps nearing 90 degrees in a few locations with a light south breeze. It will certainly be quite warm, but with dew points generally running in the 50s, it will still feel fairly comfortable for outdoor activities. High pressure is responsible for the decent weather, and this feature will stay in control tonight as it slowly pushes off the coast. We can expect mostly clear skies with low temperatures falling into the low to mid 60s.
For the weekend, the heat and humidity both climb, both only gradually and not to the oppressive levels or long-lived duration we sweated to in the run up the Fourth of July. With high pressure having moved off the coast, we’ll see more of a southwesterly wind flow increasing the heat and humidity. Look for afternoon high temperatures on Saturday and Sunday to reach the low 90s and it will feel a couple degrees warmer, certainly on Sunday, when you factor in the increasing humidity. A cold front will slowly build down from our north late in the day Saturday. While much of the area should be rain-free throughout the daytime Saturday, there could be a couple t-storms firing with that cold front in northern areas of the Poconos late in the day Saturday. As the front gets a little closer later Saturday evening and Saturday night, a couple t-storms may be able to work a little further south into at least the Lehigh Valley, but perhaps even south of there yet. This cold front will remain across the region for Sunday keeping some hit or miss showers and t-storms in the forecast, certainly during the PM hours. There are no big severe weather concerns this weekend, but I wouldn’t completely rule out an isolated strong t-storm with some downpours, gusty winds, and small hail.
On Monday the heat and humidity should continue with high temperatures expected to be in the low 90s. The weekend cold front should washout at that point, but with some instability due to the heat and humidity along with a surface trough, we could still see a spotty PM t-storm. We’ll await a stronger cold front by Tuesday night to provide our best chance for the most widespread showers and storms later Tuesday afternoon into Tuesday night, before our next shot of comfort will follow. High temperatures Tuesday are expected to drop back into the mid to upper 80s although it will still be quite humid. Once we get behind the cold front for Wednesday and Thursday of next week, humidity should drop to more comfortable levels, and high temperatures will also run close to seasonable levels in the mid to upper 80s.
Have a great and safe Friday!
Allentown, PA 18102