Sequoia

California's greatest vertical weather transect, from summer-baked foothills to the highest ground in the lower 48.

1890PARK SINCE

Extreme vertical reliefWest-slope orographic snowHigh crest rain shadow

Sequoia rises through nearly every Sierra climate belt. The western foothills can be dangerously hot while the Giant Forest is mild and the crest still carries snow. Pacific storms wring out moisture on the long western ramp; beyond the crest, Owens Valley lies in one of the continent's sharpest rain shadows. No single station can summarize that relief, which is why this page presents a transect instead.

1890National Park sinceDesignation year, not necessarily first protection.

1Weather regionThe terrain systems crossed by the park.

5.4–36.5″Reference-station rainAnnual range across the selected gauges.

89–102°FJuly mean highsThe heat range visible in the transect.

Official NPS conditions

California map locating Sequoia National Park.

Kaweah foothills to 14,494-ft Mount Whitney. Highlighted frames are the atlas regions this park crosses.

The four seasons

THE PARK CHANGES VERTICALLY, TOO

Winter

Rain in the foothills and heavy snow in the sequoia groves and high country, often within one drive.

Spring

A long vertical melt season: foothill heat arrives while shaded forest snow remains deep.

Summer

Triple-digit heat is possible low down; alpine nights remain cold and crest thunderstorms build quickly.

Autumn

Dry, stable days dominate until an early Sierra storm makes elevation more important than the date.

The climate transect

REFERENCE STATIONS · NOT A PARK-WIDE AVERAGE

These named gauges expose the park's temperature and precipitation gradient. They may sit outside the legal boundary; each linked place page states the exact NOAA station, its elevation and its distance. None is presented as a current park forecast.

NOAA/NCEI 1991–2020 monthly normals. See each place page for station provenance and any precipitation substitute.
Atlas reference	Terrain region	Elevation	Jan low	Jul high	Annual precip	Snow
Fresno	San Joaquin Valley	308	41°	98°	11.0″	—
Yosemite Valley	Sierra Nevada	3,966	28°	89°	36.5″	—
Lone Pine	Eastern Sierra & Owens Valley	3,727	30°	102°	5.4″	—

What changes the day

CLIMATE CONTEXT · NOT A LIVE WARNING FEED

Heat below

Foothill trailheads can be dangerously hot while visitors are dressed for the forest above.

Snow above

The crest and high passes remain a winter environment well into the warm season.

Fire and smoke

A century of fire exclusion and a warming dry season make smoke part of modern trip planning.

For today's roads, trails, closures and alerts: this page supplies climate context only. Open Sequoia's official NPS conditions →

The terrain underneath it

GOLDEN STATE WEATHER REGIONS

Sierra NevadaA 400-mile granite wall, tilted west, that stores a third of California's water as snow.MOUNTAINS13,505 FT RELIEF

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