Salt Lake City, Utah – Wednesday, July 3, 2025 – Monsoonal moisture is making a notable return to Utah this midweek, introducing cloud cover, thunderstorms, and an elevated flash flood risk, especially across southern Utah and its surrounding recreational areas.
After a hot start to July, with widespread heat advisories, today’s temperatures are slightly cooler, dipping about 5 degrees compared to earlier this week. However, highs will still run above seasonal averages, with temperatures along the Wasatch Front climbing into the low to mid-90s°F (around 34°C), while Washington County, including St. George, will hover near 100°F (approximately 38°C).
More clouds are on the horizon today, as a southerly monsoon flow funnels moisture into the state. A high-pressure system anchored near the Four Corners continues to draw this tropical air mass northward, while a low-pressure system to the west creeps inland, enhancing storm chances statewide.
The setup is classic monsoon: isolated thunderstorms, increased humidity, and a spike in overnight storm activity, especially from Wednesday evening into Thursday morning. Expect gusty winds, frequent lightning, and brief but intense rainfall during any nocturnal storms.
Flash flood risk is high today across all National Parks and surrounding zones like Red Cliffs, Canyonlands, Grand Staircase-Escalante, and areas near Lake Powell. Slot canyons, dry washes, and low-lying areas in southern Utah are especially vulnerable to rapidly rising water levels. Never attempt to cross flooded terrain, and always seek higher ground if storms develop nearby.
Looking toward Independence Day, Thursday, July 4, a drier air mass is expected to briefly return across northern Utah, with only a slight chance for pop-up thunderstorms. Temperatures will align more closely with seasonal averages: around 90°F (32°C) for the Wasatch Front and near 100°F (38°C) in Washington County. However, as high pressure reasserts control, gusty winds could increase fire danger, especially across dry, grassy areas.
The Fourth of July weekend currently looks sunny, hot, and dry, but in true summer fashion, weather conditions can shift quickly. Keep an eye on the 4Warn Weather forecast for the latest updates across Good4Utah platforms.
