Sunnybrook, California Weather Forecast Discussion

848
FXUS66 KSTO 042059
AFDSTO
Area Forecast Discussion
National Weather Service Sacramento CA
159 PM PDT Sat Oct 4 2025
.SYNOPSIS...
Dry weather continues this weekend and periods of breezy north
winds. Temperatures will gradually warm over the weekend and into
early next week. Chances for unsettled and cooler weather return
late next week.
&&
.KEY MESSAGES...
* TODAY THROUGH WEDNESDAY:
- Warm and dry conditions prevail through this weekend and
   through the middle of next week as upper troughing remains in
   place.
- High temperatures will trend warmer through the weekend with
   Valley high temperatures in the 80s by Monday and Tuesday,
   alongside Minor HeatRisk. Temperatures then trend cooler on
   Wednesday.
- Periods of breezy north to east winds today through Tuesday,
   during the morning and late evening hours. Breeziest areas will
   be through the northern and central Sacramento Valley, as well
   as through gaps/canyons over the western slopes of the Sierra.
* THURSDAY-FRIDAY
- Clusters and ensembles depict an upper trough approaching the
   Pacific Northwest late next week which will bring chances for
   light precipitation and cooler temperatures, however forecast
   confidence is low due to disagreement on timing.
- A few solutions depict the low moving onshore during the
   Friday-Saturday period, bringing the aforementioned
   precipitation, while other solutions show it stalling offshore
   resulting in dry weather continuing early next weekend.
- Precipitation impacts look to be minimal, with the NBM
   advertising a 30 to 45% chance of precipitation amounts 0.1" or
   more over the Valley, foothills, and mountains.
- Cooler temperatures expected heading into the weekend.
.AVIATION...
VFR conditions across interior NorCal next 24 hours. Breezy
northerly wind gusts 15-20 kts across portions of the northern and
central Sacramento Valley until 00z Sunday and again after 06z
Sunday. Northeast to east wind gusts 15-25 kts over the mountains
after 06z Sunday. Elsewhere, surface winds generally remain at or
below 12 kts.
&&
.STO WATCHES/WARNINGS/ADVISORIES...
None.
&&
$$

NWS STO Office Area Forecast Discussion