California Moderate Heat Advisory | Effective 09/08/2026 11:30

Headline: 
Heat Advisory issued September 8 at 11:30AM PDT until September 10 at 10:00PM PDT by NWS Sacramento CA
Event: 
Heat Advisory
Urgency: 
Expected
Effective: 
September 8, 2026 - 11:30am
Expires: 
September 9, 2026 - 4:00pm
Description: 
* WHAT...High temperatures 97 to 104 and low temperatures 65 to 75 expected, with widespread Moderate HeatRisk and areas of Major HeatRisk. * WHERE...The central and southern Sacramento Valley, northern San Joaquin Valley, Delta and Carquinez Strait, Foothills, and portions of the Coast Range. * WHEN...From 10 AM Wednesday to 10 PM PDT Thursday. * IMPACTS...Hot temperatures may cause heat illnesses, especially to anyone without effective cooling and/or adequate hydration. * ADDITIONAL DETAILS...Hottest temperatures and areas of Major HeatRisk are now expected to occur on Wednesday. Warmest overnight lows are expected in the Sierra foothills thermal belts.
Instruction: 
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.
Area Description: 
Sierra Nevada of Tehama-Butte-Plumas Counties Between 1000-3000 ft; Northern Motherlode Between 1000-3000 ft; Central Motherlode Between 1000-3000 ft; Southern Motherlode Between 1000-3000 ft; Northern Sacramento Valley in Tehama County; Central Glenn County Including Interstate 5; Eastern Glenn County; Butte County Below 1000 ft; Central Colusa County Including Interstate 5; Eastern Colusa County; Sutter and Yuba Counties Below 1000 ft; Capay Hills of Yolo County and Vaca Hills of Solano County; Western Yolo County Including Capay Valley and Interstate 505; Central Yolo and Northeast Solano Counties Including Woodland and Davis; Sacramento Metro and Western El Dorado and Amador Counties; Central Solano County Including Fairfield and Vacaville; Southwestern Solano County Including Vallejo; Sacramento County Delta; San Joaquin County Delta; Central San Joaquin County Including Stockton Metro; Tracy Triangle Below 1000 ft; Northeastern San Joaquin Valley Below 1000 ft; Eastern Diablo Range Above 1000 ft; Western Stanislaus County Below 1000 ft Including Interstate 5; Central Stanislaus County Including Modesto Metro
Forcast Office: 
NWS Sacramento CA
Sender: 
w-nws.webmaster@noaa.gov