A large stationary front is splitting up the nation, and you can see below the precipitation that is causing around the US. The second picture shows the impact more clearly.
This is all propagated by a low pressure system moving along the US-Canadian border. You can see its progression in yesterday's update.
The good news is that on Monday night once the front passes, almost 100% of the nation will be dry! It won't last though as another system will be moving in from the northern Pacific into Washington state and the Northwest. The bad news though? This amazing warm weather for this time of year in the mid-upper 60's for the NY metro area will drop down to below seasonal in the upper 40's. It's the lows though that will feel worse for us, dropping from the mid 50's down to the low-mid 30's.
Just have to remember it's November and it's technically only one month until the start of Winter. Still though, I hope we get into the 60's again soon.