FXUS66 KSTO 231833 AFDSTO Area Forecast Discussion National Weather Service Sacramento CA 1133 AM PDT Sun Aug 23 2026 .KEY MESSAGES... - Dry with seasonable high temperatures through the next week. - Slight but uncertain chance for isolated thunderstorms on Monday. && .DISCUSSION... Some high clouds visible moving across interior NorCal today on GOES West Satellite imagery. Still, conditions remain dry with seasonable temperatures. Valley highs primarily in the 90s today, with 80s to 90s at higher elevations. Breezy onshore conditions, though less windy today than the last few days. The remainder of the week, upper level low pressure to the northwest and high pressure to the east will continue the pattern of periodically breezy onshore winds, with seasonable high temperatures and cooler overnight lows. Early Monday morning there is a less than 5% chance for an isolated thunderstorm to develop over the western portion of the southern Sacramento Valley, though there is very little confidence in this occuring. Monday afternoon and evening, there is up to a 10% chance for isolated thunderstorms along and east of the Sierra crest, including near the Burney Basin. && .AVIATION... VFR conditions continue through the TAF period, with FEW to SCT clouds moving through the Sacramento sites this afternoon/evening. Overnight another cloud deck shifts through Interior Northern California bringing SCT clouds, with VFR ceilings. Winds during the TAF period will be breezy at times near the Delta, but overall around 5-10kts elsewhere. && .STO WATCHES/WARNINGS/ADVISORIES... None. && $$