Meteorologist Amy Freeze brings you the latest weather updates for the Southwest. From balmy days in Phoenix to snowy evenings in Sierra Nevada, find out all you need to stay prepared!

Phoenix Evening News – 03/31/2025. Meteorologist Amy Freeze provides a detailed forecast for the Southwest over the coming week. With varying conditions from city to city, this guide will help you plan your activities, whether it’s enjoying the outdoor sunshine or bundling up for snow. Don’t miss out on practical tips for dealing with high UV indexes and sudden temperature shifts.
Rain is continuing to move inland from the Pacific Ocean, bringing steady showers along the northern California coast. Redding is experiencing moderate rainfall, while lighter showers spread across the Bay Area, affecting San Francisco. Rain extends farther south to Fresno, where it offers some relief to the Central Valley. Bakersfield sees just light scattered showers. In the higher elevations of the Sierra Nevada, snow is falling with intensity near Reno, combining brisk winds and lower temperatures. Light showers are scattered across the Salt Lake City area. The radar reveals dry conditions in Las Vegas Flagstaff, positioned at a higher elevation, braces for light snow flurries. In Southern California, there are clear skies across the Greater Los Angeles area, though San Diego may feel a mild coastal breeze.
For this evening in Phoenix, expect partly cloudy skies as temperatures slowly ease down from 81 degrees at 8 PM to 75 degrees by midnight. Winds will be coming from the west-southwest, ranging from 13 miles per hour at 8 PM, diminishing slightly to 11 miles per hour by midnight.
Tonight in the Southwest, we’re tracking notably low temperatures as a cold air mass settles in. Flagstaff is expected to drop to a chilly 20 degrees. In Las Vegas, temperatures will dip to around 50 degrees, a shift from the warmer mid-60s we saw recently. Farther south, Cedar City can expect a brisk low of 26. In California, San Francisco will register 45 degrees, and Fresno will cool off to 44 degrees.
For tomorrow, we can expect significantly warmer temperatures across the Southwest as higher pressure builds in the region. Las Vegas is also enjoying a warm day with a high reaching 66 degrees, while Los Angeles will be slightly cooler at 66 as well. Farther inland in Bakersfield, expect a high of 61 degrees. San Diego will see a mild day at 60 degrees, and Fresno will peak at 55 degrees. Up north, Redding will hit 58 degrees, while San Francisco stays cooler at 56 degrees.
In the Southwest, expect a diverse weather day as a cold front advances. Snow will impact the higher elevations of Southern California and Nevada, making travel tricky over passes. The coastal and valley regions of Northern California face waves of rain, leading to potential ponding on roadways. Meanwhile, the desert southwest remains clear.
The UV index in Phoenix will be very high on Monday with a value of 8, meaning sunburn can occur in as little as 17 minutes. Ensure you have sunscreen, hats, and sunglasses if you’re spending time outdoors. On Tuesday, the UV index slightly decreases to 7, with a burn time of about 20 minutes.
For the Phoenix 7 Day Outlook, Monday: Partly cloudy with a warm high of 84 degrees and a low of 61 degrees. Tuesday: Expect sunny skies, with a cooler high of 74 degrees and a low of 53 degrees. Wednesday: The sunshine continues, with temperatures peaking at 65 degrees and cooling to 50 degrees overnight. Thursday: The clouds roll in with a high of 70 degrees and 55 for the low. Friday: Partly sunny skies return, bringing a daytime high of 74 degrees and a low of 54 degrees. Saturday: Enjoy more sunshine, as temperatures climb to a high of 79 degrees with a low around 56 degrees. Sunday: The week wraps up beautifully clear, with a high of 81 degrees and a mild low of 58 degrees.