Mount Whitney Main Trail
Sierra Nevada, CA
Elevation Profile
Current Conditions
Bottom Line
Good conditions window for Whitney this weekend. Weather is stable with cool highs in the low 40s, overnight lows at 29°F, and no significant precip — but 31 inches of snowpack on the trail means microspikes and an ice axe are mandatory above treeline. Flows on all relevant gauges are at or below median, so no crossing concerns.
43°/29°F · Mostly Sunny then Slight Chance Snow Showers
Data temporarily unavailable
This data source did not respond. Try regenerating the briefing.
31" depth
Normal flows · 5 gauges
No active fires within 50 miles
14h 17m daylight · Sunrise 5:42 AM · Sunset 8:00 PM
Full Briefing
Snow is the main thing to plan around. The trail above Trail Camp (roughly 12,000 ft) will have continuous snow coverage with 31 inches of depth still on the ground in late May. The switchbacks up to Trail Crest and the summit plateau are the crux — these are icy and steep in the morning before solar softening. Carry microspikes at minimum and an ice axe if you're not confident on 35-40 degree frozen snow. Plan to hit the switchbacks mid-morning after the sun has had a couple hours to work, but no later than early afternoon — see the timing note below.
Weather is favorable. Highs in the low 40s, mostly sunny Saturday with winds up to 22 mph S, and light precip chances (22% today, 14% Sunday) that read as brief snow shower flurries at elevation rather than any accumulating event. Overnight lows of 29°F are cold but manageable with a 3-season setup. The south and ESE wind Saturday and Sunday is worth noting — it's not dangerous, but combined with the light snow shower chances it tells you a weak system is brushing the area. No active fires within 50 miles and no smoke concerns.
Stream crossings are a non-issue. The gauges available for this briefing are geographically removed from the Whitney corridor, but flows are at or below median across all five stations, and the cool temperatures (highs only in the low 40s) are not driving aggressive snowmelt pulses. Lone Pine Creek crossings on the lower trail should be straightforward. Still, afternoon flow will be higher than morning flow on sunny days — cross early if you're uncertain.
Note that avalanche forecast data was unavailable for this briefing. That said, the Whitney Main Trail is not primary avalanche terrain — the main hazard on this route is hard snow travel and self-arrest terrain, not avalanche exposure. With 14+ hours of daylight and stable weather through the weekend, you've got a solid window. Get to the switchbacks by 9-10 AM for the best snow conditions, plan to be off the summit and below Trail Crest by 1 PM to stay ahead of any afternoon convection, and you're in great shape.
Waypoints
Whitney Portal
Start at Whitney Portal. Store, campground, and parking. Trailhead sign here.
8,360 ft
Outpost Camp
First designated camping area. Good acclimatization stop.
11,499 ft
Trail Camp
Main overnight camp before the summit push. Toilet facilities.
12,999 ft
Trail Crest (99 Switchbacks)
Top of the 99 Switchbacks. Often icy in early season. Views of the Owens Valley.
14,009 ft
Mount Whitney Summit
Summit! Highest point in the contiguous US at 14,505 feet. Summit hut for shelter.
14,505 ft
Route Details
Distance
21.0 mi
Elevation Gain
6,099 ft
Elevation Loss
6,099 ft
Max Elevation
14,505 ft
Estimated Days
1
Trailhead
Whitney Portal
Best Season
July through September. Snow on trail in June and early July. Permits required—lottery opens in February.
Permit Required
Permit required May 1–Nov 1 through recreation.gov. Overnight permits need bear canister.
About This Route
The Mount Whitney Trail from Whitney Portal is the standard route to the summit of the highest peak in the contiguous United States at 14,505 feet. The 11-mile trail (one way) gains 6,100 feet through pine forests, past alpine lakes, and across granite boulder fields to the summit plateau. The trail is one of the most heavily used wilderness corridors in the country. Whitney Portal sells out permits almost instantly when the lottery opens. Day hikers can make the round trip in 8-12 hours for fit hikers starting at 3am; overnight backpackers typically camp at Outpost Camp or Trail Camp. Altitude sickness is the primary hazard, especially for hikers coming from sea level. Acclimate by spending a night at Whitney Portal (8,365 ft) before attempting the summit. Snow crosses the trail above Trail Camp through mid-July most years, and the 99 Switchbacks can be icy in early season requiring microspikes or crampons. Thunderstorms build almost daily in July and August. The summit must be reached by noon to safely descend before afternoon lightning. The trail is well-marked and heavily trafficked.
Plan This Route
Get a personalized conditions briefing with detailed analysis for your trip dates.
Plan This Route