Tomorrow | Weather | Salt Lake City, Utah

Active Weather Warnings
Tuesday, July 21, 2026
Sunny with a Chance of Thunderstorms
Day 99°
Night 73°
Precipitation 55 %
Wind 8 mph
UV Index (0 - 11+) 9
Weather Forecast History
Last Year's Weather on This Day (July 21, 2025)
Cloudy Night

Day

93°

Night

75°

Wind

15 mph

Precipitation

1 %

Weather Alerts and Warnings for

Moderate Expected Likely

Heat Advisory

Heat Advisory issued July 19 at 9:58PM MDT until July 21 at 12:00AM MDT by NWS Salt Lake City UT
Jul 20, 12:00 PM Jul 21, 12:00 AM
WHAT: Hazardous temperatures in excess of 100 degrees are
forecast to develop Monday afternoon across valley locations in
northwest Utah, particularly along the northern Wasatch Front and
the Great Salt Lake Desert.

WHERE: Eastern Box Elder County, Great Salt Lake Desert and
Mountains, Northern Wasatch Front, Salt Lake Valley, and Tooele
and Rush Valleys.

WHEN: From noon Monday to midnight MDT Monday Night.

IMPACTS: Low temperatures into Monday morning will stay elevated
in the upper 60s to mid 70s for most lower valley locations,
offering little relief overnight.
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Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1.
Updated: Jul 20, 3:49 AM Source: NWS Alert