Warm, Dry Week in Arizona Before Cooler Weekend
Arizona is experiencing a warm and dry week due to high pressure dominating the region. Daytime highs in the Phoenix area are expected to reach the mid-80s °F (29-30 °C) through Thursday, which is over 5°F above the seasonal average. Overnight lows will range from the upper 50s to low 60s °F (14-16 °C). However, a storm system is forecast to develop off the West Coast by Friday, moving across northern Baja and into Sonora, Mexico, by Friday night into Saturday. This system may bring a slight chance of rain to the Phoenix area over the weekend, with better rain chances in southern Arizona. Cooler air will accompany the system, dropping weekend highs to the upper 70s °F (25-26 °C). Another storm system could bring additional rain chances late Sunday into Monday.