There should be some clouds developing through the night. There is also the chance of some patchy fog developing as some moist air moves in from the ocean.
At this point, I am leaning towards the milder…GFS MOS guidance for Monday. Again, there isn't really anything different about the air mass for Monday with the exception of a little bit more of a southerly flow as a cold front gets closer to the Mid-Atlantic. The NAM MOS would be possible if there were some low clouds and possibly some fog hanging on during the day. At this point, I think any morning fog burns off quickly and that the clouds should break for some sun by early afternoon. Also, solar radiation in March is strong enough to heat the ground fairly well despite a lot of cloudiness. Another localized cool pocket may exist over Southeastern New Jersey.
Tuesday’s front will bring heavy rain showers to the region and possibly a thunderstorm. Mid to late morning may be the best time to see the showers and thunderstorms.
We turn much cooler for the second half of the work week. The European and American guidance diverge on several systems between Friday and Sunday and their track. I think between this period we may see at least one system impact our region.