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Alum Rock, California Weather

Alum Rock, California — live current conditions, hourly and 7-day forecasts, NWS alerts, aviation weather, radar and satellite imagery, tides and marine conditions for Alum Rock, Santa Clara County.

🌡️ Current Conditions
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24-Hour Forecast
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Current Conditions Detail
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7-Day Forecast
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🌊 Marine & Fishing

Tides, marine forecast and fishing conditions near Alum Rock. Nearest NOAA tide station:

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✈️ Aviation Weather

Flight conditions near Alum Rock — sourced from the FAA Aviation Weather Center. Nearest reporting station: locating…

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🌿 Air Quality
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NWS Extended Forecast
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📡 Precipitation Radar

Live animated radar for Alum Rock and surroundings — RainViewer.

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🛰️ Satellite Imagery

NOAA GOES-16 GEOCOLOR — live animated loop updated every 10 minutes. Shows cloud cover, storm systems and weather patterns across the continental US.

NOAA GOES-16 CONUS GEOCOLOR satellite animated loop
🛰️ GEOCOLOR loop 🌡️ Infrared (IR) 🌀 NHC Hurricane Satellite 🔗 NOAA Full Viewer

Source: NOAA/NESDIS GOES-East · Public domain · Auto-updates on page reload

🌙 Astronomy
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About Alum Rock, California

Alum Rock unfurls its ochre-stained hillsides under a sky that often holds the hazy gold of late afternoon. It lies 4.2 miles east-north-east of San Jose, CA (from San Jose, CA: bearing 64°T), and is situated 7.1 miles east of Santa Clara. The land here is a study in dry, chaparral resilience, where scrub oak and hardy manzanita cling to slopes that tumble down toward the more settled valleys. Canyons, carved by infrequent but powerful rains, snake through the terrain, their shadowed depths offering a cool respite from the sun's persistent gaze. The air, especially as dusk approaches, carries a faint, mineral tang, a subtle reminder of the earth’s hidden veins, and the light itself seems to soften, painting the dry grasses in shades of muted amber and rose. This rugged beauty belies a history tied to the very minerals that give Alum Rock its name, once mined for their astringent properties and used in industries from dyeing to medicine. The echoes of those early endeavors can still be felt, though the economy has long since shifted toward the technological hum of Silicon Valley, with Alum Rock serving as a verdant, wilder counterpoint. The presence of Alum Rock Park, a cherished natural refuge, draws families and nature lovers alike, its trails leading to mineral springs and offering panoramic views that stretch out to the distant, shimmering urban sprawl. It is a place where the raw, untamed spirit of the Santa Clara Valley still asserts itself, a quiet testament to the land's enduring character.

LocationAlum Rock, Santa Clara County, California
Coordinates37.366051°N, 121.827176°W
TimezonePacific Time (America/Los_Angeles)
ZIP Code(s)95127
Area Code408, 669
Page generatedJune 2026
Weather dataOpen-Meteo (open-source), NOAA National Weather Service