Synopsis:
High pressure departs eastward ahead of a cold frontal passage early Friday morning associated with a shortwave trough. Little moisture is present at mid-levels so only spotty drizzle is expected overnight Thursday into Friday. Zonal flow behind the shortwave will keep temperatures slightly below normal Saturday.
Thursday
![](https://you.stonybrook.edu/weather/files/2015/09/mstlsunny-day-sac-1vo2d1j.jpg)
Mostly sunny, increasing clouds in the afternoon.
High
%
Chance of Rain
Thursday Night
![](https://you.stonybrook.edu/weather/files/2015/09/clr-night-sac2-2lgjmem.jpg)
Cloudy with a schance for showers. Temperature increasing to 54 by 5am.
Low
%
Chance of Rain
Friday
Becoming Sunny.
High
%
Chance of Rain
Friday Night
Mostly clear.
Low
%
Chance of Rain
Saturday
Mostly sunny.
High
%