Hurricane Henriette is expected to influence weather in Honolulu with increased clouds and showers, but trade winds may alleviate conditions later in the week, per NWS Honolulu.

An extreme heat warning for Portland is issued by NWS, expecting temperatures up to 105 degrees. The public is advised to stay cool, stay hydrated, and check on vulnerable populations.

Las Vegas is facing a heatwave with temperatures expected to reach 4-8 degrees above normal, prompting Extreme Heat Warnings. The NWS warns of potential extreme heat in lower elevations and advises preparation.

Sacramento is expecting a series of hot days, with today's high nearing 99 degrees and a trend of sunny weather and clear nights persisting through the week, per the NWS.

San Diego experiences hot weather inland with cooler coastal areas due to marine layer; expect gradual cooling, possible visibility issues, high surf, and consistent temperatures with no rain forecasted.

San Francisco Bay Area is under advisories due to high heat, fire risks, and dangerous coastal conditions, with temperatures reaching near 105 degrees and potential for sneaker waves and rip currents. Cooler weather is expected later in the week.

Knoxville forecast: fair start, possible showers and thunderstorms this afternoon with high near 90 degrees, and a calm evening expected. More storms likely Tuesday and Wednesday.

The article describes a weather forecast for Salt Lake City, indicating sunny days with high temperatures in the 90s, a potential for midweek heat escalation, and chances of showers and thunderstorms later in the week.

El Paso's forecast includes sunny skies and possible showers, with isolated thunderstorms expected later in the week and temperatures in the mid to high 90s.

Seattle issued an Extreme Heat Warning with high temperatures expected to continue into Tuesday night, urging residents to take precautions against the heat.

Houston faces a hot week with chances of showers and thunderstorms, and temperatures reaching up to 92 degrees.

Wisconsin faces severe flooding after heavy rains, with the National Weather Service extending flood warnings and advising vigilance, especially at night.

Detroit weather forecast includes sunny skies, potential thunderstorms, high temperatures near 92 degrees, and varying chances of precipitation throughout the week.