Marine Weather and Tide Forecast for Bethel Island, CA

FXUS66 KSTO 231851 AFDSTO

Area Forecast Discussion National Weather Service Sacramento CA 1151 AM PDT Fri Oct 23 2026

For additional details on weather and expected impacts over the next 7 days, please visit weather.gov/sto/briefing.

KEY MESSAGES

- Breezy north to east winds develop today and into Saturday AM, followed by weaker downsloping winds Sat PM-Sun AM

- Dry weather continues through most of next week, chance for light showers over the Shasta County mountains on Monday

- Potential for unsettled weather Halloween Weekend, but details remain uncertain

DISCUSSION

Today through Monday

Scattered cloud cover is being observed across interior Northern California this afternoon via satellite. The weather system that brought widespread precipitation to the region is actively moving into the Desert Southwest. As ridging begins to build off the coast of NW California and the low treks further south, north to east winds will develop in the Sacramento Valley and downsloping northeast to east winds across the western slopes of the Sierra.

Forecast gusts are between 25 to 35 mph through the western Sacramento Valley and western slopes of the Sierra. Gusts 40 to 45 mph will be possible through gaps and canyons in the mountains and in the vicinity Delta west of I-5. Following this, a weaker short-lived period of downsloping winds is expected in the Sierra Saturday evening into Sunday morning, with gusts 20 to 30 mph. No broad/large scale fire weather concerns are anticipated given recent rainfall and cooler temperatures, but the gusty winds may make driving difficult for high profile vehicles. These drying north winds will limit any fog/low clouds developing in the Valley tonight into Saturday, but portions of the northern San Joaquin Valley may see patchy fog/stratus where the north winds haven't reached.

Temperatures begin to trend slightly warmer as we head into next week and ridging builds, but high temperatures will remain a few degrees below normal. A few isolated showers are possible over Shasta County mountains, Coastal Range, and southern Cascades on Monday as a weather system passes through the Pacific Northwest, but any precipitation amounts will be very light. The aforementioned system will additionally bring breezy south to southwest winds to the area, especially over the Sierra.
Otherwise dry weather is expected everywhere else.

Tuesday and Beyond
Dry weather continues through the rest of the work week, but there is the potential for unsettled weather as we close out October and head into November. Details are fairly uncertain since we're so far out, but this week will be an ideal time to clear gutters and secure loose outdoor decorations and items in preparation for any additional precipitation.
Show more