4th of July Weekend Forecast

A summery weekend awaits us as a more muggy atmosphere returns to the region.  While temperatures won't really climb all that much from where they've been the past few days (mid 80's), dew point values will  climb into the mid 60's tomorrow and the upper 60's on Sunday, bringing a definite aura of heat and humidity to the region.  It's nothing we haven't dealt with before but it will be a warm one around the Delaware Valley this weekend and into next week.

Thunderstorms are possible on Sunday across much of the region as a weak front tries to make it through the region.   The best chances for any thunderstorm activity will be in the afternoon hours across the region, earlier north and west of the city and towards dinner at the Shore.   Sunday is the "best chance" day of the weekend but a rogue storm or two could rumble across the Poconos or the western burbs late Saturday night as leftover activity from storms that fire in Western PA on Saturday try to get into the region...odds favor most folks staying dry though.  

The front may hang up across the coast on Monday and provide an afternoon thunder threat on the 4th at the Shore and in Delaware.   Some of the models are waffling on whether the front clears the coast or not but for now I've brought in a thunder chance for south/east of the city, with Philly and north/west dry and less humid. It will not storm on your parade all day Sunday or Monday -- just be aware that there is a thunder threat though either day down at the coastline.

Highs inland will be near or just above 90 all three days, with 80's at the Shore.  Lows in the 50's north/west tonight, 60's the rest of the weekend, with 60's to 70 elsewhere.

We'll update the thunder threat for Sunday and perhaps Monday as the weekend progresses!  Stay safe this weekend!

Sunday Thunder Threat

The heat will gradually be on this weekend, with 90 degree weather hitting the region on Saturday and perhaps lingering for as many as five days into the middle of next week.   Sunday originally looked like the hottest day of the stretch, with an outside chance of 95 degrees as soon as yesterday's computer guidance, in advance of a cool front that is poised to slide on through the region with a thunder threat.   The timing of the front looked originally to be late afternoon and early evening with thunderstorms popping up along and with the weak frontal boundary. Some hints are showing up that the timing could end up being a bit earlier on Sunday.

Most computer guidance from this afternoon is suggesting either a midday or afternoon thunder threat...some of which could be severe. It doesn't look like an all day event and thunderstorms could fire on a line (frontal boundary) and slide southeast.  Whether the storms fire at 12, 2, or 5 is always an exercise in "to be determinedness" but the odds of some thunder on Sunday are pretty good.

Regarding the weekend as a whole, it will be very warm as temperatures will be in the 90 degree range or the low 90's for the weekend.   Not the hottest on record (no 100 degree weather in sight) but it's still a "typical" summertime weekend around the Delaware Valley, with Sunday the one day with a thunder threat.