965
FXUS66 KSTO 151846
AFDSTO

Area Forecast Discussion
National Weather Service Sacramento CA
1146 AM PDT Wed Jul 15 2026

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

.KEY MESSAGES...

 - Elevated Fire Weather conditions today due to breezy winds and
   low humidities.

 - Widespread Moderate HeatRisk today, then cooler temperatures
   in most of the Valley beginning Thursday.

 - Some chances for monsoonal moisture and thunderstorms this
   weekend.

&&

.DISCUSSION...
Mostly clear skies across interior NorCal this afternoon, though a
few cumulus can be seen popping up along the Coast Range and the
Sierra crest. Elevated fire weather conditions continue today
(primarily along and west of I-5) due to a combination of breezy
winds and low humidities, especially in down canyon areas of the
Coast Range where strongest gusts are expected. There remains a
small chance for thunderstorms in the Sierra today, though chances
are limited to areas south of HWY 50 and are 10% or less.

Widespread triple digit high temperatures are expected again
today, with Moderate HeatRisk covering the majority of the Valley,
Delta, and foothills. Tomorrow and Friday, as onshore flow
improves, most of the Valley will see a cooling trend (most
pronounced cooling will be in the vicinity of the Delta).

As we head into the weekend, diminished chances remain for a new
push of monsoonal moisture, though areas impacted appear much more
limited to the Sierra crest and further east than previous days.
There is still some uncertainty on where exactly the ridging to
the east and the troughing to the west will settle themselves,
impacting final chances on the push of moisture and any
thunderstorm probabilities through early next week; however we
will continue to monitor conditions heading into the weekend so be
sure to check in for updates.

&&

.AVIATION...
VFR conditions prevail through the TAF period. Onshore flow today
through this evening for the Sacramento sites and MOD and SCK
with gusts up to 20 kts at the Sacramento sites and up to 25 kts
at SCK and MOD, as well as in the Delta through around 06z
Thursday.

&&

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

&&

$$