Area Forecast Discussion
Issued by NWS Sacramento, CA
Issued by NWS Sacramento, CA
141 FXUS66 KSTO 031802 AFDSTO Area Forecast Discussion National Weather Service Sacramento CA 1102 AM PDT Wed Jun 3 2026 .KEY MESSAGES... -Very warm conditions through Friday with some cooling starting Saturday through early next week. Widespread moderate HeatRisk. -Dry weather except for a chance of light showers Monday and Tuesday. -Breezy afternoon and evening winds through Sunday with low humidities bringing a few areas of elevated fire conditions. && .DISCUSSION... ...Main update to the forecast is the introduction of low chances of light rain showers Monday and Tuesday... ...Thursday and Friday... Temperature forecast still on track. NBM probabilities suggesting only a slight (less then 20%) of temperatures reaching 100 degrees. Temperatures will be above normal in the mid to upper 90s. Winds aloft will be from the west as a weather system drops south out of the Gulf of Alaska which will bring delta breezes and breezy winds at times. ...Saturday and Sunday... The pre-mentioned upper trough starts to knock down heights over the area while increasing westerly flow aloft. This will result in temperatures dropping mostly out of the 90s and into the 80s. Relative humidities remain low in the valley and combined with the gusty winds will bring a few hours and aras of elevated fire concerns through Sunday which is mainly in the north Sacramento Valley. The trouhging that sets up Saturday and Sunday will persist into early next week. Some limited moisture also will then bring a chance of a few light rain showers. The chances (generally less then 30%) look to be confined to the foothills and mountains. && .AVIATION... VFR conditions at TAF sites over the next 24 hours. Northwest surface winds sustained 10 to 15 kts with gusts 15 to 20 kts in the north/central Sacramento Valley and northern San Joaquin Valley between 22Z Wednesday and 05Z Thursday. In the Delta vicinity, west winds sustained 10 to 15 kts with gusts to 20 kts through 09Z Thursday, and again after 22Z Wednesday in the Delta and mountains. && .STO WATCHES/WARNINGS/ADVISORIES... None. && $$