Going to go from spring/summer back to winter over the next 24 hours. That's March.
After our 4-day heatwave with records set all over the place and Central Park hitting 80F yesterday, the earliest that has ever happened, that's all about to end with showers and t-storms tonight and some could be severe especially towards Philly as severe t-storm watches (counties in mauve) are up for this evening along/S of 276/195 in PA/NJ. This will be followed by crashing temps overnight behind the strong cold front with temps into the mid to upper 30s by tomorrow afternoon, which will likely lead to snow showers or even extended periods of moderate snow that could leave a slushy accumulation of an inch or so on grassy/colder surfaces (but not roads, with temps in the mid-30s).
The NWS remains unimpressed (can't blame them), mentioning a change to snow showers, but not predicting any accumulation worth noting (<1/2" for areas at elevation in NWNJ/NEPA/Hudson Valley). However, several good models (GFS, Euro-AIFS, Euro, NAM, HRRR) are showing 1-2" worth of snow accumulating at 10:1 ratios, which is very likely way overdone, which is why I think the NWS is rightly showing <1/2" for only NW areas and little to no snow everywhere else tomorrow. If, somehow, colder air can work in, then maybe everyone could see up to 1" of snow on colder surfaces by tomorrow late afternoon/early evening. Personally, I'll just be happy to see falling snow even if it doesn't accumulate much or at all.
Looking ahead, after a fairly mild period from Saturday through Monday with highs in the 50s, generally, a significant rain storm is likely to move through the area on Monday (with 1"+ of rain), followed by a strong cold front Monday night, which could lead to some snow that night into Tuesday, 3/17, if the cold air can arrive before the precip shuts off, especially for areas NW of 95, but as of now, models aren't supporting significant snowfall for this time period, as some were several days ago. It looks to be cold for a few days after that, followed by moderating temps. And no big snowstorms are showing up in the long range models beyond then and we're getting close to the point where it's no longer realistic to expect any more snow.
I did greatly enjoy the warmth, though, as my wife and I got in day trips to Lambertville and the Shore the past few days and I got in some disc golf without being bundled up, and got in a full all day poker session at PARX yesterday. Retirement is not so bad.
https://www.weather.gov/phi
