776
FXUS66 KSTO 152134
AFDSTO

Area Forecast Discussion
National Weather Service Sacramento CA
134 PM PST Thu Jan 15 2026


.KEY MESSAGES...

 - Dry weather expected next 7 days with a return to widespread
   Valley fog/low clouds and warm/dry weather at higher
   elevations.

 - High uncertainty for light precipitation late next week.

&&

...Today & Friday...

Dry and calm conditions continue today, with fog and low stratus
having dissipated since this morning. Patchy to dense fog is
possible again the next several days, though chances are slightly
lower than they were this morning: generally 40-60% chance for
visibilities less than a half mile in the southern Sacramento
Valley, up to 70% in the northern San Joaquin Valley for Friday
morning. Valley highs will peak tomorrow in the mid to high 60s,
before lowering slightly over the weekend. Highest temperatures
still expected in the northern Sacramento Valley and the
foothills.

...The Weekend and Next Week...

Ridging continues to dominate the pattern over the West Coast
through much of the next week. This in turn, continues the chance
for low stratus and fog in the Valley for the next several days.
Temperatures are expected to cool slightly over the weekend and
fluctuate early next week, with Valley temperatures generally
in the low to mid 60s. As the ridge breaks down later in the week,
there is a slight potential for rainfall towards the end of the
week. The exact pattern is still somewhat uncertain, and slight
differences in the movement of the low pressure system from the
northeast will make a difference in the timing and amount of any
precipitation. At this time, it looks like an uncertain chance for
very light rainfall, but stay tuned for future updates to the
forecast as we get closer.

&&

.AVIATION...

Lingering MVFR/IFR conditions at Valley TAF sites through around
20z today, except in portions of the northern San Joaquin Valley
where IFR/LIFR conditions may linger through the afternoon. Valley
surface winds below 12 kts next 24 hours. Breezy downslope winds
in Sierra/southern Cascades with gusts up to around 20 kts. FG/BR
conditions expected to develop tonight around 05z Friday in
Valley, although some mixing of north winds may hinder widespread
FG development. HREF keeps a general 40-60% chance of SFC viz
1/2SM or less, best chances in northern San Joaquin Valley.

&&

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

&&

$$