August, California 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

492
FXUS66 KSTO 242023
AFDSTO

Area Forecast Discussion
National Weather Service Sacramento CA
123 PM PDT Thu Apr 24 2025

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

.Discussion...

.Synopsis...
Chances for afternoon and evening showers are in store for
interior NorCal into the early weekend, with Friday-Saturday as
the best days for widespread precipitation and thunderstorm
development. A cooling trend with mountain snow on Saturday is
expected with minor travel impacts; A Winter Weather Advisory has
been issued for locations above 6000 ft from Friday evening to
Sunday morning.

&&

.Key Messages...

* Today: Cooling trend with breezy to gusty onshore winds

-Probability of high temperatures 75 degrees F or higher: 45-80%
     in the central and northern Sacramento Valley

-10-25% chance of isolated showers or thunderstorms this
     afternoon and evening across northern Sacramento Valley and
     surrounding terrain.


* Friday-Weekend:

-Cooling trend with breezy to gusty onshore winds continues

-More widespread showers and thunderstorms (10-20%) starting
     Friday evening and continuing through the weekend.

-Snow expected above 6000 feet late Friday through early Sunday
-40-75% probability of 4 inches or more of snowfall above 6000 feet
     along Sierra/southern Cascades, 30-50% of 6 inches or more.

* Monday-Wednesday:

-Warming trend begins along with drier weather

.Changes from previous forecast...

* Winter Weather Advisory issued from 5pm Friday to 10am Sunday

* Snow probabilities increased for Friday evening into early
  Sunday morning

&&

.AVIATION...
VFR conditions across interior NorCal next 24 hours. South to
west winds up to 12 to 14 kt, with gusts up to around 20 kts for
TAF sites. Marine stratus could bring local MVFR ceilings over the
Sacramento metro area 14-18Z Friday. &&

.STO WATCHES/WARNINGS/ADVISORIES...
Winter Weather Advisory from 5 PM Friday to 11 AM PDT Sunday for
West Slope Northern Sierra Nevada-Western Plumas County/Lassen
Park.

&&

$$