July in Grand Canyon National Park is a tough month: highs around 84°F, lows around 54°F. Crowds: peak crowds — #1 busiest of the park's 12 months. It is the park's warmest month of the year. Monsoon lightning + extreme inner-canyon heat. The editorial best window here is April–May & September–October. You get about 14h 21m of daylight. To finish Bright Angel to Havasupai Gardens (4h 30m) before dark, leave the trailhead by about 3:13 PM.
Month data reviewed · how we check this
| Verdict | Tough Closures, harsh weather or very limited access — plan carefully. |
|---|---|
| Temps °F | 84° high / 54° low — the park's warmest month |
| Crowds | peak crowds · #1 busiest of the park's 12 months |
| What July is like | Monsoon lightning + extreme inner-canyon heat |
| Best window (whole year) | April–May & September–October |
| Peak crowds (whole year) | Jun–Aug |
CROWDS: RELATIVE SEASONALITY FROM NPS VISITATION STATISTICS · TEMPS: APPROXIMATE NOAA NORMALS AT MAIN VISITOR ELEVATION — HIGH COUNTRY RUNS 10–20°F COLDER
DAYLIGHT ON JULY 15 · LOCAL PARK TIME (MST)COMPUTED FROM THE PARK'S OWN COORDINATES FOR THE 15TH — THE MIDDLE OF THE MONTH STANDS FOR IT, AS IT DOES FOR CLIMATE NORMALS. WITHIN A MONTH THESE TIMES SHIFT BY UP TO AN HOUR
LEAVE THE TRAILHEAD BY — TO FINISH BEFORE DARK ON JULY 15WALKING TIMES ESTIMATED FROM EACH TRAIL'S MEASURED DISTANCE AND ELEVATION GAIN — A PLANNING FIGURE, NOT A PACE. ADD YOUR OWN MARGIN FOR PHOTOS, REST AND CROWDS. WATER AT THE COOL-WEATHER RATE, BECAUSE THIS MONTH AVERAGES 84°F. TRAILS WE HAVE NOT MEASURED ARE LEFT OUT RATHER THAN GUESSED
WHAT JULY ASKS OF YOU HEREGrand Canyon National Park in August — Tough, highs around 82°F, crowds: peak crowds (monsoon continues; afternoon storms clear to great sunsets).
Our verdict for July is "Tough". Closures, harsh weather or very limited access — plan carefully. Expect highs around 84°F and lows around 54°F, with crowds at the "peak crowds" level. Temperatures are approximate NOAA normals at the main visitor elevation; crowd levels follow published NPS visitation statistics.
Across the full 12-month review, the best window is April–May & September–October, and the peak-crowd months are Jun–Aug. July itself we rate "Tough".
About 14h 21m on July 15: the sun rises around 5:23 AM and sets around 7:45 PM local park time (MST). Computed from the park's own coordinates, so it is the light you actually get at the trailhead, not the nearest city's.
Bright Angel to Havasupai Gardens takes about 4h 30m of walking, so on July 15 you would need to leave the trailhead by about 3:13 PM to finish before dark — the sun sets around 7:45 PM local park time (MST). Walking times are estimated from each trail's measured distance and elevation gain, so treat them as a planning figure and add your own margin for photos, rest and crowds.
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