Mostly Cloudy with Isolated Showers with a high near 53°F[12°C]. South southeast wind to around 9 mph[15 kph], with wind gusts to near 17 mph[27 kph]. The dewpoint will be near 28°F[4°C] with a humidity of 49% and a barometric pressure around 30.25 in[1024 mb]. The UVI forecast is 0. Chance of precipitation is 22% with a qpf of 0.03 in[0.8 mm].
Tonight
Partly Cloudy with a low around 43°F[6°C]. East southeast wind to around 5 mph[7 kph], with wind gusts to near 9 mph[14 kph]. The dewpoint will be near 39°F[4°C] with a humidity of 71% and a barometric pressure around 30.22 in[1024 mb]. Chance of precipitation is 0% with a qpf of 0.00 in[0.00 mm].
Saturday
Mostly Cloudy with Rain with a high near 58°F[15°C]. East wind to around 7 mph[10 kph], with wind gusts to near 26 mph[42 kph]. The dewpoint will be near 31°F[6°C] with a humidity of 60% and a barometric pressure around 30.10 in[1019 mb]. The UVI forecast is 2. Chance of precipitation is 85% with a qpf of 0.14 in[3.6 mm].
Saturday Night
Cloudy with Rain and Scattered Storms with a low around 42°F[6°C]. South southeast wind to around 19 mph[31 kph], with wind gusts to near 14 mph[22 kph]. The dewpoint will be near 43°F[7°C] with a humidity of 77% and a barometric pressure around 30.04 in[1017 mb]. Chance of precipitation is 99% with a qpf of 1.04 in[26.5 mm].
Sunday
Mostly Cloudy with Showers and Isolated Storms with a high near 46°F[8°C]. South southwest wind to around 9 mph[15 kph], with wind gusts to near 14 mph[22 kph]. The dewpoint will be near 41°F[6°C] with a humidity of 98% and a barometric pressure around 30.17 in[1022 mb]. The UVI forecast is 0. Chance of precipitation is 84% with a qpf of 0.42 in[10.7 mm].
Sunday Night
Partly Cloudy with Light Rain Showers with a low around 36°F[2°C]. South southwest wind to around 6 mph[10 kph], with wind gusts to near 9 mph[15 kph]. The dewpoint will be near 40°F[4°C] with a humidity of 91% and a barometric pressure around 30.31 in[1026 mb]. Chance of precipitation is 30% with a qpf of 0.03 in[0.9 mm].
Monday
Mostly Sunny with a high near 54°F[12°C]. Northeast wind to around 6 mph[10 kph], with wind gusts to near 13 mph[21 kph]. The dewpoint will be near 35°F[3°C] with a humidity of 81% and a barometric pressure around 30.29 in[1026 mb]. The UVI forecast is 2. Chance of precipitation is 0% with a qpf of 0.00 in[0.00 mm].
Monday Night
Mostly Clear with a low around 37°F[3°C]. northwest wind to around 8 mph[14 kph], with wind gusts to near 13 mph[20 kph]. The dewpoint will be near 34°F[1°C] with a humidity of 60% and a barometric pressure around 30.33 in[1027 mb]. Chance of precipitation is 0% with a qpf of 0.00 in[0.00 mm].
Tuesday
Mostly Sunny with a high near 55°F[13°C]. East wind to around 6 mph[10 kph], with wind gusts to near 9 mph[14 kph]. The dewpoint will be near 31°F[4°C] with a humidity of 64% and a barometric pressure around 30.30 in[1026 mb]. The UVI forecast is null. Chance of precipitation is 0% with a qpf of 0.00 in[0.00 mm].
Tuesday Night
Partly Cloudy with a low around 40°F[5°C]. Southwest wind to around 5 mph[8 kph], with wind gusts to near 10 mph[16 kph]. The dewpoint will be near 38°F[3°C] with a humidity of 67% and a barometric pressure around 30.28 in[1026 mb]. Chance of precipitation is 0% with a qpf of 0.00 in[0.00 mm].
Wednesday
Partly Cloudy with a high near 53°F[12°C]. East southeast wind to around 7 mph[12 kph], with wind gusts to near 12 mph[20 kph]. The dewpoint will be near 36°F[4°C] with a humidity of 74% and a barometric pressure around 30.18 in[1022 mb]. The UVI forecast is null. Chance of precipitation is 0% with a qpf of 0.00 in[0.00 mm].
Wednesday Night
Mostly Clear with a low around 34°F[1°C]. West northwest wind to around 7 mph[12 kph], with wind gusts to near 11 mph[17 kph]. The dewpoint will be near 36°F[2°C] with a humidity of 70% and a barometric pressure around 30.14 in[1021 mb]. Chance of precipitation is 0% with a qpf of 0.00 in[0.00 mm].
Thursday
Mostly Sunny with a high near 55°F[13°C]. East northeast wind to around 7 mph[11 kph], with wind gusts to near 11 mph[18 kph]. The dewpoint will be near 29°F[3°C] with a humidity of 66% and a barometric pressure around 30.15 in[1021 mb]. The UVI forecast is null. Chance of precipitation is 0% with a qpf of 0.00 in[0.00 mm].
Thursday Night
Clear with a low around 36°F[2°C]. West northwest wind to around 4 mph[6 kph], with wind gusts to near 5 mph[8 kph]. The dewpoint will be near 37°F[3°C] with a humidity of 90% and a barometric pressure around 30.19 in[1022 mb]. Chance of precipitation is 0% with a qpf of 0.00 in[0.00 mm].
Forecasts for: QPF - Max Wind Speed - Max Humidity - Snowfall - Ice Accumulation
7 Day QPF Forecast
Today: 0.8 mm |0.03 in
Tonight: 0.00 mm |0.00 in
Saturday: 3.6 mm |0.14 in
Saturday Night: 26.5 mm |1.04 in
Sunday: 10.7 mm |0.42 in
Sunday Night: 0.9 mm |0.03 in
Monday: 0.00 mm |0.00 in
Monday Night: 0.00 mm |0.00 in
Tuesday: 0.00 mm |0.00 in
Tuesday Night: 0.00 mm |0.00 in
Wednesday: 0.00 mm |0.00 in
Wednesday Night: 0.00 mm |0.00 in
Thursday: 0.00 mm |0.00 in
Thursday Night: 0.00 mm |0.00 in
7 Day Maximum Wind Speed Forecast
Today:SSEat 27 kph |17 mph
Tonight:ESEat 14 kph |9 mph
Saturday:Eat 42 kph |26 mph
Saturday Night:SSEat 52 kph |32 mph
Sunday:SSWat 22 kph |14 mph
Sunday Night:SSWat 15 kph |9 mph
Monday:NEat 21 kph |13 mph
Monday Night:NWat 20 kph |13 mph
Tuesday:Eat 14 kph |9 mph
Tuesday Night:SWat 16 kph |10 mph
Wednesday:ESEat 20 kph |12 mph
Wednesday Night:WNWat 17 kph |11 mph
Thursday:ENEat 18 kph |11 mph
Thursday Night:WNWat 8 kph |5 mph
7 Day Maximum Humidity Forecast
Today: 69 %
Tonight: 73 %
Saturday: 71 %
Saturday Night: 99 %
Sunday: 100 %
Sunday Night: 93 %
Monday: 81 %
Monday Night: 69 %
Tuesday: 64 %
Tuesday Night: 79 %
Wednesday: 74 %
Wednesday Night: 75 %
Thursday: 81 %
Thursday Night: 90 %
7 Day Snowfall Totals Forecast
Today: 0.00 cm |0.00 in
Tonight: 0.00 cm |0.00 in
Saturday: 0.00 cm |0.00 in
Saturday Night: 0.00 cm |0.00 in
Sunday: 0.00 cm |0.00 in
Sunday Night: 0.00 cm |0.00 in
Monday: 0.00 cm |0.00 in
Monday Night: 0.00 cm |0.00 in
Tuesday: 0.00 cm |0.00 in
Tuesday Night: 0.00 cm |0.00 in
Wednesday: 0.00 cm |0.00 in
Wednesday Night: 0.00 cm |0.00 in
Thursday: 0.00 cm |0.00 in
Thursday Night: 0.00 cm |0.00 in
7 Day Ice Accumulation Forecast
Today: 0.00 mm |0.00 in
Tonight: 0.00 mm |0.00 in
Saturday: 0.00 mm |0.00 in
Saturday Night: 0.00 mm |0.00 in
Sunday: 0.00 mm |0.00 in
Sunday Night: 0.00 mm |0.00 in
Monday: 0.00 mm |0.00 in
Monday Night: 0.00 mm |0.00 in
Tuesday: 0.00 mm |0.00 in
Tuesday Night: 0.00 mm |0.00 in
Wednesday: 0.00 mm |0.00 in
Wednesday Night: 0.00 mm |0.00 in
Thursday: 0.00 mm |0.00 in
Thursday Night: 0.00 mm |0.00 in
The Latest Forecast Discussion
000
FXUS66 KSTO 031210
AFDSTO
Area Forecast Discussion
National Weather Service Sacramento CA
410 AM PST Fri Feb 3 2023
.SYNOPSIS...
Rain returns today with a short break expected tonight and most of
Saturday before a stronger system moves through Saturday night and
Sunday bringing gusty winds, rain and heavy mountain snow. Dry
weather expected through much of next week.
&&
.Discussion...
Radar shows a band of light to moderate rain beginning to spread
into the Sacramento Valley from the coast and Bay Area. Rainfall
so far to our west has amounted from 1/4 to 1/2 inch in some
areas from the North Bay area northward. All the clouds are
resulting in considerably milder temperatures across the region
early this morning with the Central Valley seeing current
temperatures in the upper 30s to upper 40s, around 5-15 degrees
warmer compared to 24 hours ago.
Most of the energy with this incoming system is heading to the
north into the PacNW, so the front will weaken as it progresses
inland today. QPF of around a third of an inch will be possible in
the Sacramento Valley with considerably lighter amounts expected
to the south of Sacramento into the northern San Joaquin Valley.
Wetter mountain areas will likely see 1/2 to 1 inch. Snow impacts
are expected to be relatively minor in the northern Sierra today
with around an inch or two of accumulation possible on Donner Pass
and Echo Summit, and perhaps 3-4 inches of accumulation across
some of the highways in eastern Shasta and Tehama counties.
A short break in the weather is expected tonight and most of
Saturday as a weak short-wave ridge traverses the area. We may see
enough clearing this evening for some patchy fog in the valley
south of Yuba City by Saturday morning. High clouds in advance of
the next system will be increasing late tonight and may disrupt
this fog potential.
Timing has sped up a bit with the next system forecast to move in
later Saturday afternoon bringing moderate to heavy precipitation
as the front moves in on Saturday evening. Gusty southerly winds
of 25-35 mph will precede the front across the valley.
Precipitation is forecast to turn more showery late Saturday
night and Sunday with the upper trough moving through, and a few
thunderstorms will be possible - mainly Sunday afternoon. Heavy
snow will likely continue across the northern Sierra, and we`re
still looking at the potential for 18-30 inches of snowfall
accumulation over the higher passes through Sunday evening leading
to major travel impacts.
Showers end Sunday night and dry weather is forecast to return
early next week with seasonably mild days and cool nights. Some
patchy late night and morning frost and fog will be possible in
the Central Valley.
&&
.EXTENDED DISCUSSION (Tuesday THROUGH Friday)...
Ensembles show ridging building across interior NorCal early next
week. This will result in dry conditions and near normal daytime
highs. A weak wave brushes to the north by the middle of next
week, with increased cloud coverage and perhaps a slight chance of
light precipitation across the mountains north of I-80. Ridge
rebuilds late next week, with continued dry conditions.
Temperatures through the forecast period will range from the upper
50s to low 60s in the Valley, with 40s and mid 50s over the
mountains. Overnight lows are expected to generally range from the
mid 30s to upper 30s in the Valley, with areas of Valley frost
possible Tuesday morning.
&&
.AVIATION...
Pacific system will continue to gradually spread precipitation
across the area this morning with local MVFR/IFR conditions in
rain and snow. Otherwise, lingering light showers possible through
this afternoon. Southerly wind gusts up to 15-20 kts in the
Valley and up to 25-40 kts over higher terrain through 00Z
Saturday. Local MVFR/IFR visibilities after 10Z-12Z Saturday with
BR/FG across portions of the Sacramento Valley and northern San
Joaquin Valley.
&&
.STO WATCHES/WARNINGS/ADVISORIES...
Winter Storm Watch from Saturday afternoon through Sunday evening
for West Slope Northern Sierra Nevada-Western Plumas County/Lassen
Park.
&&
$$
