Southern Californians are facing a heatwave with potential highs of 100°F and a weekend forecast that includes tropical moisture leading to showers and a slight chance of thunderstorms. Cooling is expected starting Saturday.

The NWS has issued an Extreme Heat Warning for the Mojave Desert, including Las Vegas and surrounding areas, with temperatures expected to break records.

Sacramento is experiencing a heatwave with sunny days and triple-digit temperatures, though cooler nights offer some relief. The NWS forecasts a pattern of hot, sunny days and clear nights, with a gradual cooldown into early next week.

El Paso is forecasted to experience scattered showers and thunderstorms with varying chances of precipitation throughout the week, with highs around the low 90s.

Denver's weather forecast includes a 30% chance of afternoon showers and thunderstorms, with a high near 82°F. Conditions may calm down by tonight, with an expected low of 53°F.

Salt Lake City forecast: sunny weekend with highs around 92-95 degrees, but chance of showers early next week.

Detroit's weather forecast includes rain, thunderstorms, and sunshine, with comfortable temperatures ranging from highs near 77°F to 88°F and lows around 47°F to 52°F over the next week.

Seattle's weather forecast includes sunny days, light rain chances, with highs in the 70s and lows in the 50s, according to the National Weather Service.

Atlanta's forecast includes showers and thunderstorms with a 70% chance of rain and wind gusts today, sunny weekend with highs in the low 80s, and increasing heat next week with chances of rain by midweek.

San Antonio's weekend weather forecast includes a 50% chance of rain today, mostly cloudy skies, with highs of 88°F. Occasional showers and thunderstorms may continue into next week.

The National Weather Service predicts clear skies and high temperatures in Phoenix, AZ, with a slight chance of showers and decreasing heat early next week.

Detroit weather includes scattered showers and possible thunderstorms, with highs of 77 degrees, followed by a mostly sunny weekend and temperatures up to 88 degrees.

Boston is set to experience variable weather, with a chance of showers today, heavier rain and thunderstorms tonight and Saturday, and a mostly sunny Sunday with a chance of morning showers. Brighter, warmer conditions are expected next week.