657
FXUS66 KSTO 062115
AFDSTO

Area Forecast Discussion
National Weather Service Sacramento CA
215 PM PDT Wed May 6 2026

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


.KEY MESSAGES...

 - Hot and dry conditions are expected to develop end of the week
   with widespread Minor HeatRisk Thursday and Friday.

 - Widespread Moderate HeatRisk Sunday into Tuesday.

 - Hottest Days Monday and Tuesday with triple digit and daily
   record highs possible.

&&

.DISCUSSION...

...Today...

Latest satellite shows loop shows the morning stratus layer be
replaced by cumulus and stratocumulus clouds in the Valley, Delta,
and foothills. In spite of the cloud cover, early afternoon
temperatures are running 5 to 10 degrees warmer than 24 hours ago
as eastern Pacific ridging builds in. Highs this afternoon are
expected to be in the mid to upper 70s.

...Thursday through Tuesday...

Wednesday is expected to be dry with high temperatures 3 to 7
degrees above normal as eastern Pacific high pressure ridging
builds into into the region with widespread Minor HeatRisk in the
Valley and Delta. This is the beginning of an extended period of
dry and warm weather. Conditions continue to warm as we move into
weekend into early next week with. Minor HeatRisk is expected
to extending through most of the foothills and mountains by the
Saturday, with some areas of Moderate HeatRisk are expected in
the Valley by Saturday. More widespread Moderate HeatRisk arrives
Sunday and continues through Tuesday. Hottest days are expected to
be Monday and Tuesday, with highs in the upper 90s to around 100.
Some daily high temperature records are in jeopardy. The NBM
continues to indicate a 50 to 70% chance of 100 or greater in the
northern San Joaquin Valley and portions of the central Sacramento
Valley next Monday and Tuesday. There may be some Delta breeze to
give influenced areas a slight break for overnight lows.

Minimum RH values trend lower through the week as well, dropping
into the 20s and teens by the weekend into early next week.
Northerly winds the were expected Saturday have diminished quite a
bit, and are no longer a concern.

 &&
.AVIATION...


VFR conditions expected over the next 24 hours. Surface winds
generally 12 kts or less.

&&

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

$$