Current Conditions

Alum Rock, California

76°F24°C
Partly Cloudy

Wind

W 3 mph5 km/h

Humidity

45%

Cloud Cover

88%

As of Tuesday, September 8, 2026 at 6:36 PM PDT

Today's Outlook

Night

Mostly cloudy, with a low around 67°F19°C. Light wind from the N around 3 mph5 km/h.

7-Day Forecast

DayConditionHigh (°F)Low (°F)Precip (mm)Cloud Cover (%)Wind (mph)
Partly CloudyHigh 94°F34°CLow 67°F19°CPrecip 0 in0 mmCloud 64%Wind N 4 mph6 km/hWednesday: Mostly cloudy and hot, with a high of 94°F34°C and morning low of 71°F21°C. Light wind from the N around 4 mph6 km/h. Dry air. Wednesday Night: Mostly cloudy, with a low around 67°F19°C. Light wind from the N around 3 mph5 km/h.
ClearHigh 91°F33°CLow 69°F20°CPrecip 0 in0 mmCloud 19%Wind W 4 mph7 km/hThursday: Mostly clear and hot, with a high of 91°F33°C and morning low of 74°F23°C. Breezy from the W at 6 to 8 mph9 to 13 km/h. Thursday Night: Mostly clear, with a low around 69°F20°C. Light wind from the W around 3 mph5 km/h.
ClearHigh 82°F28°CLow 62°F17°CPrecip 0 in0 mmCloud 6%Wind WSW 4 mph7 km/hFriday: Mostly clear and warm, with a high of 82°F28°C and morning low of 65°F18°C. Light wind from the W around 5 mph8 km/h. Dry air. Friday Night: Mostly clear, with a low around 62°F17°C. Light wind from the WSW around 3 mph5 km/h.
ClearHigh 76°F24°CLow 58°F14°CPrecip 0 in0 mmCloud 10%Wind W 5 mph8 km/hSaturday: Mostly clear and warm, with a high of 76°F24°C and morning low of 60°F16°C. Breezy from the W at 6 to 8 mph10 to 14 km/h. Dry air. Saturday Night: Mostly clear, with a low around 58°F14°C. Light wind from the W around 4 mph7 km/h.
ClearHigh 76°F25°CLow 54°F12°CPrecip 0 in0 mmCloud 8%Wind NW 5 mph8 km/hSunday: Mostly clear and warm, with a high of 76°F25°C and morning low of 58°F14°C. Breezy from the NW at 6 to 7 mph10 to 12 km/h. Dry air. Sunday Night: Mostly clear, with a low around 54°F12°C. Light wind from the WNW around 4 mph6 km/h.
ClearHigh 80°F27°CLow 55°F13°CPrecip 0 in0 mmCloud 9%Wind WNW 4 mph6 km/hMonday: Mostly clear and warm, with a high of 80°F27°C and morning low of 58°F15°C. Light wind from the WNW around 4 mph7 km/h. Dry air. Monday Night: Mostly clear, with a low around 55°F13°C. Light wind from the W around 3 mph4 km/h.
ClearHigh 77°F25°CLow 56°F14°CPrecip 0 in0 mmCloud 19%Wind WSW 4 mph6 km/hTuesday: Mostly clear and warm, with a high of 77°F25°C and morning low of 60°F16°C. Light wind from the WSW around 4 mph7 km/h. Dry air. Tuesday Night: Mostly clear, with a low around 56°F14°C. Light wind from the WSW around 3 mph5 km/h.

15-Day Forecast

Day High Low Precip Cloud Cover Condition Wind
WednesdaySep 994°F34°C67°F19°C0 in0 mm· —64%Partly CloudyN 4 mph6 km/h
ThursdaySep 1091°F33°C69°F20°C0 in0 mm· —19%ClearW 4 mph7 km/h
FridaySep 1182°F28°C62°F17°C0 in0 mm· —6%ClearWSW 4 mph7 km/h
SaturdaySep 1276°F24°C58°F14°C0 in0 mm· —10%ClearW 5 mph8 km/h
SundaySep 1376°F25°C54°F12°C0 in0 mm· —8%ClearNW 5 mph8 km/h
MondaySep 1480°F27°C55°F13°C0 in0 mm· —9%ClearWNW 4 mph6 km/h
TuesdaySep 1577°F25°C56°F14°C0 in0 mm· —19%ClearWSW 4 mph6 km/h
WednesdaySep 1675°F24°C56°F13°C0 in0 mm· —21%ClearWSW 4 mph6 km/h
ThursdaySep 1777°F25°C56°F13°C0 in0 mm· —20%ClearW 3 mph6 km/h
FridaySep 1877°F25°C56°F14°C0 in0 mm· —24%ClearW 3 mph6 km/h
SaturdaySep 1977°F25°C57°F14°C0 in0.1 mm· 3%30%ClearW 4 mph6 km/h
SundaySep 2077°F25°C57°F14°C0 in0.1 mm· 2%31%ClearW 4 mph6 km/h
MondaySep 2177°F25°C58°F14°C0 in0.1 mm· 2%30%ClearW 4 mph6 km/h
TuesdaySep 2278°F25°C57°F14°C0.01 in0.3 mm· 3%35%ClearW 4 mph6 km/h
WednesdaySep 2379°F26°C59°F15°C0.01 in0.3 mm· 5%28%ClearW 4 mph6 km/h

Nearby Cities

About This Forecast

This forecast is powered by WeatherMesh, the world's most advanced and accurate weather model powered by AI. WeatherMesh is built on proprietary data from WindBorne's Global Sounding Balloon constellation — the world's largest fleet of autonomous, long-duration weather balloons — collecting observations across 100% of Earth, including over oceans and remote regions where no other data exists.

WeatherMesh consistently outperforms legacy models in independent benchmarks. View Benchmarks →

Access WeatherMesh forecasts programmatically via our API. API Documentation →

How to Access Weather Forecasts

PatternExampleDescription
/weather/{country}/{city}//weather/united-states/san-francisco/City forecast (canonical URL)
/weather/{city}//weather/tokyo/Shorthand — redirects to most populous match
/weather/{country}/{region}/{city}//weather/united-states/california/san-francisco/With region — redirects to canonical
/weather/nearby?lat={lat}&lon={lon}/weather/nearby?lat=48.1&lon=11.5Find nearest city by coordinates
/weather/{country}//weather/germany/Country index — all cities by region

Country and city names use lowercase slugs with hyphens (e.g. united-states, san-francisco). Arbitrary city names are supported — if not in our database, we geocode the name and serve the forecast for that location.

For programmatic access, use theWindBorne Forecast APIwhich returns structured JSON for any coordinates worldwide.

Coordinates: 37.3661°N, 121.8272°W·Elevation: 46m·Timezone: America/Los_Angeles·Population: 15,536