774
FXUS66 KSTO 082049
AFDSTO

Area Forecast Discussion
National Weather Service Sacramento CA
1249 PM PST Sat Nov 8 2025

For additional details on weather and expected impacts over the
next 7 days, please visit weather.gov/sto/briefing.

.KEY MESSAGES...

 - A drying and warming trend continues into early next week, with
   patchy morning fog possible on Sunday.
 - The next storm system looks to arrive mid to late week bringing
   widespread rain, breezy winds, cooler temperatures, and
   mountain snow.

.DISCUSSION...

...Today through early next week...

Dry and warm conditions are expected through early next week, as
ridging aloft builds in over the western CONUS. Temperatures will
be in the low to mid 70s through early next week, with morning
lows in the upper 40s to 50s. Breezy offshore and downsloping
winds during the overnight hours are anticipated. Additional
overnight and early morning fog development will be possible
through the Delta, Valley, and foothills into Sunday morning
before drying impacts from the building ridge lower chances early
next week. Confidence is low on the coverage, density, and
location of the fog, with current probabilities of visibility less
than 1 mile around 20-45% across the Delta, southern/central
Sacramento Valley, northern San Joaquin Valley and adjacent
foothills locations on Sunday morning.

...Mid to Late Week...

The aforementioned ridging aloft looks to break down by the
middle of the week, allowing a deepening trough from the Gulf of
Alaska to dig southward and introduce a return to active weather
from late Wednesday onward. Widespread rain, breezy to gusty
onshore winds, and isolated thunderstorm chances are expected on
Thursday as this system moves into NorCal. As the trough moves
inland by Friday, chances for scattered rain showers and isolated
thunderstorms will continue, with mountain snow chances above 6500
feet expected to increase. Long range ensembles indicate some
potential for an additional weaker system by next weekend, but
details remain highly uncertain at this time.


.AVIATION...
Light winds prevail throughout the Valley across the forecast
period, with breezy east-northeast winds anticipated along the
Sierra after 03z Sunday. VFR conditions to prevail at RDD and RBL,
with additional periods of MVFR/IFR/LIFR expected to develop
09z-18z Sunday in BR/FG through the Delta, foothills, and
remaining Valley locations.

&&

.STO WATCHES/WARNINGS/ADVISORIES...
None.
&&

$$