889
FXUS66 KSTO 301843
AFDSTO

Area Forecast Discussion
National Weather Service Sacramento CA
1143 AM PDT Sun Aug 30 2026


.KEY MESSAGES...

  - Well below normal temperatures persist through much of the
    week starting Monday.

  - Elevated Fire Weather conditions Monday afternoon and early
    evening in the northern Sac Valley, northeastern foothills,
    and Burney Basin due to low humidity and breezy winds.

  - Increasing confidence in areas of unsettled weather and
    continued cool temperatures late in the week and into next
    weekend.

&&

.DISCUSSION...

Today through Early Week...

Dry weather with near normal temperatures continues today. Monday,
as a low pressure system moves through, temperatures will begin to cool
to significantly below normal, with Valley highs in the 70s to
low 80s by Tuesday. Monday will also see breezy onshore, south to
southwest winds, strongest near the Delta and in the northern and
central Sacramento Valley, northeast foothills, and Burney Basin.
This, combined with relatively low humidities will lead to periods
of elevated fire weather conditions on Monday. Tuesday, as the
bulk of the trough approaches, there remains a non-zero chance
for isolated showers and thunderstorms in the northwestern portion
of Shasta county. Chances remain below 10% though.

Mid to Late Week...

The remainder of the week and into the weekend, troughing will
remain the dominant pattern and will help maintain cooler than
normal temperatures. Confidence is increasing in the overall
pattern, with the low primarily located just offshore. This means
while showers are still possible, especially towards the northern
end of interior NorCal, chances are low that we`ll see totals
more than a couple tenths of an inch anywhere. However, it will
keep conditions cooler than normal, and will likely introduce some
cloud cover to the area.

&&

.AVIATION...

VFR conditions prevail over the next 24 hours across interior
NorCal. Surface winds will generally be below 12 kts for TAF sites
through 18Z Monday, then increase in the afternoon with sustained
SW winds to around 12 kts with gusts to 20 kts for the Sacramento
metro area, south 15 kts with gusts to 20 to 30 kt for the
northern Sacramento Valley. West southwest gusts up to 20 to 25
kts in the Delta are possible after 00Z this evening, increasing
to 25 to 30 kts after 18Z Monday. Breezy to gusty southwest winds
are expected after 18Z Monday over the Sierra, gusting up to 20 to
30 kts.

&&

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

&&

$$