Here is a little bit on tomorrow's system...
A gulf low will be moving to our southeast providing a noticeable amount of precipitation. I'm thinking we could easily receive near an inch within the whole system.
Tomorrow will start partly to mostly cloudy and progressing into overcast conditions by midday. Showers will likely start in the afternoon, but the heavier rain will come later in the evening. Instability looks to be low so I wouldn't expect to see any severe weather.
Between 3am and 6am Tuesday we have the potential to see flurries, but not accumulation is expected. Any frozen precipitation should melt significantly in the lower 1,000ft of the atmosphere. The bigger story with this system will be the rain on Monday evening and the cooler temperatures.