As Los Angeles enjoys clear skies tonight, a heat wave is on the horizon. Prepare for varied temperatures and protect yourself from high UV exposure!

This in-depth blog post goes beyond the daily forecast, providing insights into temperature trends, weather variations, and safety tips for surviving the Southwest’s powerful sun. From nightly cooldowns in LA to record highs in Las Vegas, understand how this week’s weather can impact your plans and health.
The Southwestern region is seeing a mix of weather today. In Nevada, a spot of precipitation is appearing near Ely, suggesting some showers or possibly mixed precipitation. Over in Arizona, Flagstaff is under some rain coverage, indicating that showers are likely occurring there. The California coast remains mostly clear, with no active precipitation noted in places like San Francisco and San Diego.
For this evening in Los Angeles, expect clear skies at 9 PM with temperatures around 70 degrees and a south-southwest breeze at 8 miles per hour. By 11 PM, temperatures will decline to 65 degrees under partly cloudy skies with a gentle south wind at 7 miles per hour. At 1 AM, anticipate partly cloudy conditions with temperatures cooling slightly to 62 degrees as winds shift to the south-southeast at 5 miles per hour. A calm and pleasant evening is on the horizon.
Tonight, Las Vegas will drop to a cool 68 degrees, while Phoenix stays warmer at 88 degrees. Flagstaff is expected to see a chilly low of 58 degrees, providing a notable contrast in the region. In California, San Francisco will reach 55 degrees and Los Angeles will cool to 62 degrees. Fresno will end the night at a mild 71 degrees.
Tomorrow Las Vegas is set to reach a blistering 113 degrees, while nearby Phoenix will also bake at 109 degrees. Further west, Fresno is expected to hit 106 degrees, and Bakersfield could see a high of 107. Meanwhile, San Diego remains milder at 76 degrees, contrasting sharply with the surrounding valley heat.
In the Southwest, expect a mix of sun and clouds tomorrow, with temperatures hovering in the mid-80s. A weak monsoonal flow is likely to introduce afternoon and evening thunderstorms for parts of New Mexico and Arizona, potentially bringing brief heavy downpours and gusty winds. Keep an eye out for a chance of isolated severe storms in eastern Arizona. As the high pressure holds over Southern California, the weather remains warm and dry, with no significant cooling trends ahead. Transitioning into mid-week, expect the weather to stabilize as the monsoonal activity diminishes.
Los Angeles will experience a very high UV index of 11 both today and tomorrow, with a burn time of just 11 minutes in direct sunlight. Sun exposure can be intense, so apply sunscreen frequently and seek shade, especially between late morning and early afternoon. It’s a great idea to wear hats and sunglasses as added protection!
For the 7-day forecast in Los Angeles: Sunday: Mostly cloudy skies with a high of 70 degrees, dropping to 62 degrees at night. Monday: Partly cloudy conditions, with highs around 70 degrees and low of 61 degrees. Tuesday: Another partly cloudy day, with temperatures reaching 70 degrees in the afternoon and cooling to 61 degrees overnight. Wednesday: Expect mostly clear skies with a high near 70 degrees and a cooler night at 61 degrees. Thursday: A sunny day ahead, with temperatures climbing to 71 degrees and a low of 61 degrees. Friday: Mostly clear weather continues, with the high reaching 72 degrees and a low of 62 degrees. Saturday: The week wraps up with mostly clear skies and a warm high of 73 degrees, with temperatures dropping to 63 degrees overnight.