National Weather Service Forecast for: Placerville CA
Issued by: National Weather Service Sacramento, CA
Updated: 2:35 am PST Jan 23, 2020

Placerville
 
Overnight

Overnight: Partly cloudy, with a low around 41. Light east wind.
Partly Cloudy

Thursday

Thursday: A 10 percent chance of showers after 4pm.  Mostly cloudy, with a high near 57. East northeast wind 5 to 7 mph becoming calm  in the morning.
Partly Sunny
then Slight
Chance
Showers
Thursday
Night
Thursday Night: A 30 percent chance of showers, mainly between 10pm and 4am.  Mostly cloudy, with a low around 45. East wind around 5 mph becoming calm  in the evening.  New precipitation amounts of less than a tenth of an inch possible.
Chance
Showers

Friday

Friday: A 20 percent chance of showers before 10am.  Partly sunny, with a high near 59. East wind around 5 mph becoming calm  in the morning.
Slight Chance
Showers then
Partly Sunny
Friday
Night
Friday Night: Mostly cloudy, with a low around 45. Light and variable wind.
Mostly Cloudy

Saturday

Saturday: A 30 percent chance of rain, mainly after 4pm.  Mostly cloudy, with a high near 59.
Chance Rain

Saturday
Night
Saturday Night: Rain, mainly after 10pm.  Low around 48. Chance of precipitation is 90%.
Rain

Sunday

Sunday: Showers likely, mainly before 10am.  Mostly cloudy, with a high near 55.
Showers
Likely

Sunday
Night
Sunday Night: A slight chance of showers before 10pm.  Mostly cloudy, with a low around 42.
Slight Chance
Showers then
Mostly Cloudy
Lo 41 °F Hi 57 °F Lo 45 °F Hi 59 °F Lo 45 °F Hi 59 °F Lo 48 °F Hi 55 °F Lo 42 °F

 

Overnight
 
Partly cloudy, with a low around 41. Light east wind.
Thursday
 
A 10 percent chance of showers after 4pm. Mostly cloudy, with a high near 57. East northeast wind 5 to 7 mph becoming calm in the morning.
Thursday Night
 
A 30 percent chance of showers, mainly between 10pm and 4am. Mostly cloudy, with a low around 45. East wind around 5 mph becoming calm in the evening. New precipitation amounts of less than a tenth of an inch possible.
Friday
 
A 20 percent chance of showers before 10am. Partly sunny, with a high near 59. East wind around 5 mph becoming calm in the morning.
Friday Night
 
Mostly cloudy, with a low around 45. Light and variable wind.
Saturday
 
A 30 percent chance of rain, mainly after 4pm. Mostly cloudy, with a high near 59.
Saturday Night
 
Rain, mainly after 10pm. Low around 48. Chance of precipitation is 90%.
Sunday
 
Showers likely, mainly before 10am. Mostly cloudy, with a high near 55.
Sunday Night
 
A slight chance of showers before 10pm. Mostly cloudy, with a low around 42.
Monday
 
A slight chance of showers. Mostly cloudy, with a high near 53.
Monday Night
 
A slight chance of showers. Mostly cloudy, with a low around 42.
Tuesday
 
A slight chance of showers. Mostly cloudy, with a high near 54.
Tuesday Night
 
Mostly cloudy, with a low around 42.
Wednesday
 
Partly sunny, with a high near 57.

 

Forecast from NOAA-NWS for Placerville CA.


NWS Local Northern CA. Outlook Discussion


967
FXUS66 KSTO 231030
AFDSTO

Area Forecast Discussion
National Weather Service Sacramento CA
230 AM PST Thu Jan 23 2020

.Synopsis...
Night and morning valley fog will be possible into Saturday.
Some light precipitation possible, mainly over the mountains and
northern portions of the Sacramento Valley, into Friday. Wetter
Pacific storm moves through this weekend. Unsettled weather
continues early next week.

&&

.Discussion...
Upper level ridge axis moving through attm, will shift into the
Great Basin today as upstream Pacific frontal system approaches.
With less high level cloudiness overnight, potential for more
widespread valley fog increases this morning. Already seeing some
patchy dense fog beginning to develop within larger areas of
lighter fog in the Sacramento and Northern San Joaquin Valleys.
HREF showing increasing probability of visibilities below 3SM from
KOVE southward early this morning, so will continue to monitor
for more widespread dense fog development. Visibilities expected
to improve by mid to late morning as boundary layer mixing
increases with approaching short wave trough. Models spread some
associated light precip into the mountains and possibly northern
and central portions of the Sacramento Valley this afternoon.
Highs today expected to be several degrees cooler than Wednesday.

Secondary trough follows through northern half of the CWA tonight
into Friday keeping a threat of light precipitation. Overall
precip amounts expected to be mostly below a tenth in the Central
Valley through Friday, with around a quarter to third of an inch
possible in portions of the Shasta and Western Plumas mountains.
Snow levels will initially be above 7000 ft this afternoon
through early Friday, then lower to around 5500 to 6500 feet
Friday afternoon into evening. No significant mountain travel
impacts expected during this period.

Upper ridging strengthens over Norcal Friday night into early
Saturday, with some night and morning dense valley fog possible.
Stronger Pacific frontal system approaches Saturday and looks to
begin spreading precipitation into our Coastal Range by the
afternoon. Baroclinic zone moves through Saturday night into
Sunday morning with some moderate precipitation associated with
it. Secondary wave keeps a threat of post-frontal showers over
interior NorCal Sunday into Monday. Storm total QPF for the
weekend system looks to range from a few tenths in the Northern
San Joaquin Valley to upwards of an inch in the Northern
Sacramento Valley. Up to around 2 inches of liquid precip possible
in wetter portions of the foothills and mountains. Snow levels
forecast to generally be above 7k feet ahead of the front on
Saturday, lowering to around 5 to 6k feet Sunday and 4500 to 5500
feet Sunday night into Monday. Snow amounts look to generally be
light to moderate and could impact travel with upwards of 6 inches
or so over the passes of the Sierra Nevada.

PCH

&&

.EXTENDED DISCUSSION (Monday THROUGH Thursday)...
After the weekend system we will see the storm track shift to the
north over the PacNW. They will see multiple waves of precip
throughout the period. The majority of the precip will stay to our
north but some light mountain showers are going to be possible
especially out a head of any incoming waves. Right now there isn`t
great agreement between ensembles on when the waves will move
through the PacNW. That leaves uncertainty on when we will see the
best chances for showers. Either way everything looks light and
low impact for us. Towards the end of the week we will see more
ridging and that will continue to push the storm track to the
north and lessen the shower chances for mountain locations.
Temperatures will be near average for much of the period but will
warm to just above average by late in the week.

-CJM

&&

.AVIATION...
IFR/LIFR conditions are expected this morning from KMYV south to
KMOD due to areas of dense fog with vis down to 1/4SM at times.
VIS improve by 18z with VFR conditions returning. Light showers
are possible after 20z mainly north of I-80 and over the higher
elevations. MVFR conditions expected for the northern terminals
due to low CIGs after 21z. MVFR conditions in any showers also.

&&

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

&&

$$
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