Arnold, California 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

914
FXUS66 KSTO 070948
AFDSTO

Area Forecast Discussion
National Weather Service Sacramento CA
248 AM PDT Mon Apr 7 2025

.Discussion...

.Synopsis...
A quick moving system brushes the region, bringing light showers,
breezy winds and isolated thunderstorms (Shasta County) today.
Dry and warm weather then prevails the rest of the week.

.Key Messages...

* Today:

-Probability of rainfall > 0.10": 50-80% across northern
  Sacramento Valley, Shasta County mountains, northern
  Sierra/southern Cascades north of I-80

-Probability of isolated thunderstorms: 10-20% in Shasta County
  through early evening

-Snow levels 6500-7500 feet, with accumulations of a dusting to
  an inch possible over peaks

-Breezy southerly winds gusting 15-25 mph at times in the Valley
  and foothills, and 25 to 35 mph over the Sierra Crest

* Tuesday - Friday:

-Dry and warm weather expected through the remainder of the week
  with Minor HeatRisk in the Valley

-Probability of high temperatures > 80F (Wednesday-Friday):
 40-80% across the Delta, Valley, and foothills, best chances on
 Thursday

* Saturday - Sunday:

-Trend toward a somewhat unsettled pattern over the weekend

-Cool down to more seasonable temperatures and breezy winds

-Slight chance (15%) for light precipitation over the northern
mountains

.Changes from previous forecast...

*Precipitation chances have trended down for the weekend

&&

.AVIATION...
General VFR conditions expected next 24 hours at TAF sites. Light
showers spread into the area this evening and overnight, and
can`t rule out an isolated thunderstorm (10-15%) in the northern
and central Sacramento Valley now through 15Z. Better chances of
thunderstorms (10-20%) after 18Z today. Snow levels 7000-8000
feet. Valley surface winds around 12 kt with local gusts to around
25kt for the northern Sacramento Valley and northeast foothills
and 40 kt over the Sierra until around 03Z Tuesday.

&&

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

&&

$$