Salt Lake City/ Weather & Environment

Salt Lake City Braces for Tuesday Thunderstorm, Flash-Flood Threat

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Published on September 21, 2026
Salt Lake City Braces for Tuesday Thunderstorm, Flash-Flood ThreatSource: Google Street View

Salt Lake City starts Monday with near-seasonal temperatures, with mid-to-high clouds increasing through the day. The calm, dry setup will not last long: Tuesday is shaping up as the week’s main weather disruption, with showers and thunderstorms likely.

Monday afternoon should stay dry with light winds, making for an easy start to the week. Clouds increase Monday night, with temperatures settling near seasonal normals and only a small chance of rain before the weather turns more active Tuesday.

Tuesday Brings Showers, Storms And A Few Hazards

Tuesday could bring rain showers, with coverage increasing through Tuesday morning, followed by a better chance of showers and thunderstorms through the afternoon.

The National Weather Service says storms may bring gusty winds, lightning, hail and brief heavy rain, with isolated flash flooding possible in vulnerable areas such as slot canyons, burn scars and normally dry washes. No watches, warnings or advisories are posted for the area in the current forecast.

Dry, Warmer Stretch Returns Wednesday

The latest update sharpens the earlier outlook for Tuesday’s rain and storm chance, while keeping the rest of the week mostly quiet. Wednesday turns sunny with a high near 79, followed by generally dry conditions Thursday through Saturday; Sunday should ease back to about 81.

For Tuesday plans, the best bet is to keep rain gear nearby and avoid lingering in flood-prone terrain if heavy rain develops. Drier weather returns Wednesday, giving outdoor plans a much friendlier forecast for the latter half of the week.