I’m writing this forcast while a shower is raining down on the Phillies, unpredicted by the models.   Nuff said?

The weather pattern of the last two weeks will be replaced by a pattern more typical of late August, with a dip in the jet stream pushing a cold front through Sunday evening.

Saturday will be sunny and hot with dew points returning to the more uncomfortable upper 60s to 70.  Temperatures will approach 90.

Fri 11pm update- tonight’s NAM shows thunderstorms possible late Saturday afternoon.

On Sunday, considerable cloudiness is expected with warm and very humid conditions.  Highs near 87 with dew points in the low 70s.  There’s the likelihood of showers and thunderstorms ahead of the frontal passage starting about 5 pm. The models are suggesting that the heaviest storms will be far north of our area, but that can change.