Synopsis:
The last warm day before a significant pattern change toward more permnant cold weather is in store Tuesday . The strong warm advection ahead is ahead of a robust trough and associated cold front. The front will pass through the area late Tuesday night but clouds will be in place throughout the day due to isentropic lift. The main line of precipitaiton will arrive after 9pm, well ahead of the cold front. Some heavy showers will be embedded in what will be mainly stratiform. Precipitation amounts between 0.4 and 0.7″ are most likely. It quickly dries out behind the frontal passage, with skies clearing and temperatres dropping throughout the day Wednesday and seasonably cool temperatures for Thursday.
Tuesday
![](https://you.stonybrook.edu/weather/files/2015/09/cloudy-day-sac-2lvevbs.jpg)
Cloudy with a chance for light showers. Breezy, with southerly winds intensifying throughout the day.
High
%
Chance of Rain
Tuesday Night
![](https://you.stonybrook.edu/weather/files/2015/09/clr-night-sac2-2lgjmem.jpg)
Rain and breezy.
Low
%
Chance of Rain
Wednesday
Chance for showers early. Becoming mostly sunny with temperatures falling to 43 by 5pm.
High
%
Chance of Rain
Wednesday Night
Partly cloudy
Low
%
Chance of Rain
Thursday
Mostly sunny.
High
%