Alum Rock, California Weather
Alum Rock, California — live current conditions, hourly and 7-day forecasts, NWS alerts, radar and satellite imagery, tide predictions, marine conditions and a solunar fishing forecast for Alum Rock, Santa Clara County.
Tides, marine forecast and fishing conditions near Alum Rock. Tide source:
Full aviation weather for Alum Rock is published on the Reid-Hillview Airport of Santa Clara County (KRHV) page, 4 km away. It carries the current METAR decoded into plain language — surface wind, visibility, cloud layers and ceiling, temperature and dewpoint, and altimeter setting — alongside the raw observation as transmitted. 6 airfields within reach of Alum Rock have their own pages, listed below.
The Terminal Aerodrome Forecast (TAF) is shown across its full validity period, with each change group broken out so you can see when conditions are expected to shift. Flight category is derived automatically — VFR, MVFR, IFR or LIFR — from reported ceiling and visibility, with runway details and field elevation alongside. Observations update roughly hourly and forecasts several times a day.
Other airports near Alum Rock: Norman Y. Mineta San Jose International Airport (KSJC) 9 km · Moffett Federal Airfield (KNUQ) 20 km · Palo Alto Airport (KPAO) 28 km · Livermore Municipal Airport (KLVK) 36 km · San Carlos Airport (KSQL) 41 km
Conditions reported at KRHV describe the airfield itself. Weather 4 km away can differ, particularly in terrain or near the coast. For conditions at Alum Rock specifically, see the current conditions and forecast above.
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.
Live animated radar for Alum Rock and surroundings — RainViewer.
NOAA GOES-16 GEOCOLOR — live animated loop updated every 10 minutes. Shows cloud cover, storm systems and weather patterns across the continental US.
Source: NOAA/NESDIS GOES-East · Public domain · Auto-updates on page reload
| Location | Alum Rock, Santa Clara County, California |
| Coordinates | 37.366051°N, 121.827176°W |
| Timezone | Pacific Time (America/Los_Angeles) |
| ZIP Code(s) | 95127 |
| Area Code | 408, 669 |
| Page generated | September 2026 |
| Weather data | Open-Meteo (open-source), NOAA National Weather Service |
About This Alum Rock, California Weather Page
This page provides live weather conditions and forecasts for Alum Rock, California, including current conditions, a 24-hour hourly forecast, 7-day outlook, NWS extended text forecast, precipitation radar and NOAA GOES-16 satellite imagery. Aviation weather — live METAR observations and TAF forecasts — is published separately on the pages for the nearest reporting airports, linked from the aviation section above. Additional sections may include tide predictions, wave height, wave direction and sea-surface temperature, a barometric pressure trend, and a solunar-based fishing forecast with a fishing-conditions rating for coastal localities, and soil temperature, crop weather and live USGS river gauge data for agricultural areas near a monitored waterway. All data updates automatically on every page visit.
Location data for Alum Rock includes coordinates 37.366051°N, 121.827176°W, situated in Santa Clara County. ZIP code 95127. Telephone area code: 408, 669. Timezone: Pacific Time (America/Los_Angeles).
Weather data is sourced from the NOAA National Weather Service (NWS) and the open-source Open-Meteo API. River and stream data is sourced from the USGS National Water Information System. Tide predictions are sourced from NOAA CO-OPS; marine and solunar data are modeled from Open-Meteo and public sunrise/moon calculations and should be treated as a general guide alongside on-the-water conditions. Radar is provided by RainViewer. Satellite imagery is sourced from NOAA/NESDIS GOES-East and is public domain.
