Grand Canyon Country
Extreme Heat Warning until MON 7:00 PM MST
Issued June, 15 2025 at 2:37 AM - US/Mountain expires June, 16 2025 at 7:00 PM - US/Mountain
...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 7 PM MST MONDAY
BELOW 4000 FEET...
* WHAT...Dangerously hot conditions below 4000 feet, with daytime
temperatures ranging from 102 degrees at Havasupai Gardens, to 111
degrees at Phantom Ranch.
* WHERE...Lower Elevations of the Grand Canyon.
* WHEN...Until 7 PM MST Monday.
* IMPACTS...Most individuals will be at risk for heat-related
illnesses without effective cooling or adequate hydration,
especially with prolonged outdoor exposure.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
This warning is reserved for only the hottest days of the year and
is issued when temperatures are expected to rise to dangerous levels.
Day hikers on Bright Angel Trail should descend no farther than 1
1/2 miles from the upper trailhead. Between the hours of 10 AM and 4
PM, hikers should be out of the canyon or at Havasupai Gardens or
Bright Angel campgrounds, physical activity is discouraged. All
hikers should have adequate gear, including a wide-brimmed hat,
sunscreen, salty snacks, sufficient water, and electrolyte mix.
Doubling your calorie intake helps maintain your energy.
Hike smart.
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