Mostly Sunny with a high near 74°F[23°C]. South southeast wind to around 4 mph[6 kph], with wind gusts to near 15,"windGustMPS":7 mph[24 kph]. The dewpoint will be near 45°F[10°C] with a humidity of 78% and a barometric pressure around 30.04 in[1017 mb]. The UVI forecast is 6. Chance of precipitation is 0% with a qpf of 0.00 in[0.00 mm].
Tonight
Mostly Clear with a low around 53°F[12°C]. Southwest wind to around 8 mph[13 kph], with wind gusts to near 12,"windGustMPS":6 mph[20 kph]. The dewpoint will be near 49°F[10°C] with a humidity of 54% and a barometric pressure around 30.11 in[1020 mb]. Chance of precipitation is 0% with a qpf of 0.00 in[0.00 mm].
Tuesday
Mostly Sunny with a high near 75°F[24°C]. East wind to around 3 mph[5 kph], with wind gusts to near 12,"windGustMPS":6 mph[20 kph]. The dewpoint will be near 47°F[13°C] with a humidity of 79% and a barometric pressure around 30.09 in[1019 mb]. The UVI forecast is 6. Chance of precipitation is 0% with a qpf of 0.00 in[0.00 mm].
Tuesday Night
Clear with a low around 53°F[12°C]. West wind to around 7 mph[11 kph], with wind gusts to near 13,"windGustMPS":6 mph[21 kph]. The dewpoint will be near 52°F[11°C] with a humidity of 56% and a barometric pressure around 30.05 in[1018 mb]. Chance of precipitation is 0% with a qpf of 0.00 in[0.00 mm].
Wednesday
Sunny with a high near 78°F[26°C]. East northeast wind to around 3 mph[4 kph], with wind gusts to near 13,"windGustMPS":6 mph[21 kph]. The dewpoint will be near 46°F[9°C] with a humidity of 72% and a barometric pressure around 29.98 in[1015 mb]. The UVI forecast is 6. Chance of precipitation is 0% with a qpf of 0.00 in[0.00 mm].
Wednesday Night
Clear with a low around 55°F[13°C]. West northwest wind to around 7 mph[11 kph], with wind gusts to near 10,"windGustMPS":4 mph[16 kph]. The dewpoint will be near 48°F[9°C] with a humidity of 45% and a barometric pressure around 29.91 in[1013 mb]. Chance of precipitation is 0% with a qpf of 0.00 in[0.00 mm].
Thursday
Sunny with a high near 77°F[25°C]. East northeast wind to around 5 mph[8 kph], with wind gusts to near 13,"windGustMPS":6 mph[22 kph]. The dewpoint will be near 46°F[9°C] with a humidity of 60% and a barometric pressure around 29.84 in[1010 mb]. The UVI forecast is 5. Chance of precipitation is 0% with a qpf of 0.00 in[0.00 mm].
Thursday Night
Mostly Clear with a low around 56°F[13°C]. West wind to around 8 mph[13 kph], with wind gusts to near 12,"windGustMPS":5 mph[19 kph]. The dewpoint will be near 45°F[7°C] with a humidity of 42% and a barometric pressure around 29.82 in[1010 mb]. Chance of precipitation is 0% with a qpf of 0.00 in[0.00 mm].
Friday
Mostly Sunny with a high near 74°F[23°C]. East wind to around 7 mph[11 kph], with wind gusts to near 17,"windGustMPS":8 mph[27 kph]. The dewpoint will be near 45°F[8°C] with a humidity of 57% and a barometric pressure around 29.77 in[1008 mb]. The UVI forecast is 5. Chance of precipitation is 0% with a qpf of 0.00 in[0.00 mm].
Friday Night
Mostly Clear with a low around 51°F[11°C]. West southwest wind to around 9 mph[14 kph], with wind gusts to near 14,"windGustMPS":6 mph[23 kph]. The dewpoint will be near 46°F[8°C] with a humidity of 48% and a barometric pressure around 29.78 in[1008 mb]. Chance of precipitation is 0% with a qpf of 0.00 in[0.00 mm].
Saturday
Mostly Sunny with a high near 67°F[20°C]. East wind to around 7 mph[12 kph], with wind gusts to near 16,"windGustMPS":7 mph[25 kph]. The dewpoint will be near 42°F[6°C] with a humidity of 64% and a barometric pressure around 29.79 in[1009 mb]. The UVI forecast is null. Chance of precipitation is 0% with a qpf of 0.00 in[0.00 mm].
Saturday Night
Mostly Clear with a low around 52°F[11°C]. West northwest wind to around 9 mph[14 kph], with wind gusts to near 14,"windGustMPS":6 mph[22 kph]. The dewpoint will be near 41°F[5°C] with a humidity of 47% and a barometric pressure around 29.85 in[1011 mb]. Chance of precipitation is 0% with a qpf of 0.00 in[0.00 mm].
Sunday
Mostly Sunny with a high near 70°F[21°C]. East wind to around 8 mph[13 kph], with wind gusts to near 16,"windGustMPS":7 mph[26 kph]. The dewpoint will be near 39°F[6°C] with a humidity of 53% and a barometric pressure around 29.85 in[1011 mb]. The UVI forecast is null. Chance of precipitation is 0% with a qpf of 0.00 in[0.00 mm].
Sunday Night
Mostly Clear with a low around 54°F[12°C]. West wind to around 1 mph[1 kph], with wind gusts to near 11,"windGustMPS":5 mph[18 kph]. The dewpoint will be near 40°F[5°C] with a humidity of 45% and a barometric pressure around 29.96 in[1014 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
000
FXUS66 KSTO 252028
AFDSTO
Area Forecast Discussion
National Weather Service Sacramento CA
Issued by National Weather Service Hanford CA
128 PM PDT Mon Sep 25 2023
.SYNOPSIS...
High temperatures in the mid to high 70s are expected today across
the Northern California interior. These temperatures are below
normal for this time of year and will warm slightly before cooling
down over the weekend. A chance of rain is in the forecast for the
central to northern portion of the forecast area north of I-80
tonight into tomorrow, along with gusty winds. After tomorrow, the
weather looks to be calmer over the next few days, before the
weekend sees chances for isolated showers and elevated winds.
&&
.DISCUSSION...
A trough is slowly moving into the Northern California interior,
bringing with it evening rain and strong southerly winds. The rain
band associated with the system has moved onshore and begun
bringing rain to coastal California areas. Model ensemble guidance
shows the rain band associated with the trough beginning to impact
the forecast area north of the I-80 by tonight. This rain will
continue through late tomorrow morning. The northern portion of
the forecast area will see the highest impacts, with Redding
forecast to see up to half an inch of rain. Chico and the
surrounding areas look to see less rain, up to a tenth of an inch,
with Northern Sierra foothills forecast to see up to a quarter
inch of rain. Strong southerly winds are possible and have
matching spatial and temporal coverage with the rain, with wind
gusts up to 35 miles an hour possible.
Due to lingering impacts of this trough, tomorrow morning will see
residual rain and cloudiness through late morning before clearing
out by the afternoon. Winds in the morning will gust to lower
values than tonight, around 25 miles an hour, before lowering
further to light and breezy values of 5-10 mph. After this trough
moves out of the area, weather looks to be calm and dry for the
next few days. An attempt at ridge building will result in
temperatures warming tomorrow through Friday, with temperatures
peaking on Thursday. On Thursday, temperatures for most of the
Northern California valley will be in the mid to high 80s. By
Saturday, temperatures will have cooled back down to below normal
for this time of year.
&&
.EXTENDED DISCUSSION (Friday THROUGH Monday)...
Model differences continue with the track of a large upper low at
the end of the week as it digs into the Great Basin over the
weekend. This leads to uncertainty with the amount of associated
precip over the CWA. NBM limits precip mainly to the Sierra Nevada
over the weekend with amounts around 0.10 to 0.25 inch, although
there are slight chances (about 15-20%) for light rain in valley
portions, including 0.01 inch in Sacramento to 0.10 inch or more
at Chico and Redding for Saturday. Forecast afternoon highs are
lowest on Saturday, with highs around 10 to 15 degrees below
seasonal averages, or lower to mid 70’s in the valley locations.
Latest probabilistic data show about a 35 to 50 percent chance of
high temperatures of 75 degrees or lower in these particular
areas. On Saturday and Sunday, the potential exists for some
locally gusty winds (generally around 30 to 35 mph), though a low
probability (less than 20 percent) at this time, Areas that could
see gusty winds redeveloping would be the Sierra Nevada, as well
as some downsloping northerly winds into the northern Sacramento
Valley. Models diverge even more on Monday in terms of the
synoptic pattern, but various solutions continue to show dry
weather. Below normal high temperatures expected through the
extended forecast period, although a minor warming trend begins on
Sunday.
&&
.AVIATION...
Areas of MVFR/IFR due to precipitation possible N of I-80 in
precip through 12Z Tuesday, except lingering showers until Tuesday
18Z in the Sierra Nevada. In Sac Vly/Delta, areas of S-SW sfc
gusts of 20-25 kts thru 03Z Tuesday. In Sierra Nevada, areas of
southwest gusts 25-35 kts until 09Z Tuesday. Otherwise, VFR
conditions will prevail over the next 24 hours.
&&
.STO WATCHES/WARNINGS/ADVISORIES...
None.
&&
Synopsis/Discussion...............Serrato
Extended Discussion/Aviation......BSO
$$
