Dive into this week’s weather trends with Amy Freeze. Unpack daily forecasts from sizzling highs to cool showers in Phoenix.

Phoenix Evening News – 05/04/2025
Meteorologist Amy Freeze here with your Southwest Forecast update. Prepare for a rollercoaster of temperatures and weather conditions in Phoenix. From sunny skies to thunderstorms and cooling night temps, stay informed and get tips on how to navigate the weather. Detailed daily insights and the effects of a high-pressure system are discussed. Don’t forget your umbrella and keep the sunscreen handy!
The Southwest region radar shows a mix of weather conditions. Northern Nevada is experiencing scattered showers moving eastward, impacting areas from Reno to Ely. Cedar City is seeing moderate precipitation, while light rain is spreading across southern Utah. In northern Arizona, over Flagstaff, expect intermittent showers. Meanwhile, southern California including Los Angeles and San Diego remains clear of precipitation tonight.
This evening in Phoenix, temperatures start at 71 degrees at 9 PM, gradually cooling to 66 degrees by 1 AM. You can expect cloudy skies with a shift from southwest winds at 12 miles per hour to west-northwest winds at 7 miles per hour. Scattered thunderstorms are anticipated by 11 PM, developing into light showers by early morning. Keep an umbrella handy just in case!
Tonight in the Southwest, we’re looking at some notably cold temperatures. Flagstaff will dip to a brisk 32 degrees, while Ely experiences a frigid low of just 30. Las Vegas will stay slightly warmer at 59 degrees, but still feels cool. In Southern California, Los Angeles is forecasted to reach 55 degrees and San Diego will see a low of 54. Expect clear skies to contribute to those chilly nighttime temperatures across the region.
High temperatures in the Southwest region are expected to rise above average tomorrow. Phoenix will reach a warm 71 degrees, while Las Vegas enjoys a pleasant 66 degrees. In California, Bakersfield will see highs around 84 degrees, with San Francisco slightly cooler at 77 degrees. Further south, San Diego will have a comfortable high of 65 degrees, reflecting mild coastal conditions. These temperatures are influenced by a ridge of high pressure settling over the area, bringing unseasonably warm conditions.
Expect a dynamic weather day in the Southwest tomorrow. A low-pressure system is moving through, bringing a mix of rain and thunderstorms, particularly impacting Arizona and New Mexico. Watch for heavy rainfall and potential flash flooding in central Arizona, as well as isolated thunderstorms moving into southern Nevada by late afternoon. Temperatures will hover in the mid-70s to low 80s across the region, cooler than usual due to cloud cover and rain. Clearer skies and warm temperatures are expected to return by the weekend.
The UV index in Phoenix for this Sunday will be an intense 9, with a burn time of approximately 15 minutes under direct sunlight, so please apply sunscreen generously and often, wear a hat, and seek shade when possible. Monday’s index slightly decreases to 6, reducing the burn time to 23 minutes, though caution is still advised for prolonged exposure. Keep an eye on local weather reports for any shifts in conditions that might alter UV levels.
Tuesday: Mostly clear skies with a high of 74 degrees and a low of 63. Wednesday: Things heat up with clear skies pushing temperatures to a high of 85 degrees and a low of 67. Thursday: Expect clear conditions with the temperature climbing to a warm 94 degrees and a low of 72 degrees. Friday: It’s a scorcher as mostly clear skies bring a high of 102 degrees and a low of 77 degrees. Saturday: Another hot day with mostly clear skies, reaching a high of 106 degrees and a low of 80 degrees. Sunday: Look for morning showers to clear as temperatures swing between a high of 79 degrees and a low of 59 degrees. Monday: The clouds return, bringing a high of 71 degrees and a low of 59 degrees. Enjoy your week and stay cool!