The National Weather Service in Las Vegas has issued an advisory for potential isolated showers and thunderstorms in the region, with possible heavy downpours and gusty winds. Cooler temperatures are expected to follow.

Sacramento's weather forecast predicts mainly sunny skies with intermittent showers, highs in the mid-80s, and lows around 60 degrees throughout the week.

San Diego's weekend weather will be marked by clear skies and near-average temperatures, with minimal chances for rain, mainly in the mountains. A cooling trend is anticipated midweek with temperatures expected to drop significantly below average.

The National Weather Service forecasts a cooldown with possible showers in the Bay Area, expecting below-normal temperatures and light rain from Monday to Wednesday.

Chicago experiences cooler temperatures with a high of 68 degrees and clear skies, while the week ahead promises a gradual return to typical September warmth.

The National Weather Service predicts a warm, sunny week for Memphis, with temperatures rising to the mid-90s and clear skies, following a calm and humid morning.

Denver forecast includes clouds, sun, and possible thunderstorms with a high of 85 degrees and light winds. Evening may bring showers before 8pm with a low of 58 degrees.

Salt Lake City forecast includes sun, thunderstorms, and fluctuating temperatures; a 20% chance of rain today, highs of 87°F, and potential showers and thunderstorms through Friday, according to NWS.

El Paso, TX, residents can expect extended clear skies and rising temperatures, with daytime highs nearing 89°F and mild evenings around 71°F. A slight chance of showers is forecasted for Friday night.

The Twin Cities forecast includes clear skies and a potential storm; Minneapolis will see sunshine and a high of 67 today, with a cooler 51 tonight. Showers and thunderstorms might hit Monday afternoon and evening.

The NWS in Portland forecasts variable weather, including a slight chance of showers and sunny periods, with potential thunderstorms and rain later in the week.

Houston's weather this week includes slight chances of showers, potential street flooding risks, and the watch of a low-probability tropical system, with temperatures staying in the high 80s.

A forecast for Phoenix, Arizona predicts sunny skies with temps rising through the week, reaching around 101°F, with calm winds and evening lows in the low 80s. Winds may increase midweek.