Current Conditions

Alum Rock, California

72°F22°C

Partly Cloudy

Wind

NW 2 mph4 km/h

Humidity

51%

Cloud Cover

90%

As of Tuesday, September 8, 2026 at 10:58 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

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Partly Cloudy	High 95°F35°C	Low 67°F19°C	Precip 0 in0 mm—	Cloud 60%	Wind N 4 mph6 km/h	Wednesday: Mostly cloudy and hot, with a high of 95°F35°C and morning low of 71°F21°C. Light wind from the N around 4 mph7 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.
Clear	High 92°F33°C	Low 70°F21°C	Precip 0 in0 mm—	Cloud 21%	Wind W 4 mph7 km/h	Thursday: Partly cloudy and hot, with a high of 92°F33°C and morning low of 75°F24°C. Breezy from the W at 6 to 8 mph9 to 13 km/h. Dry air. Thursday Night: Mostly clear, with a low around 70°F21°C. Light wind from the W around 3 mph5 km/h.
Clear	High 83°F28°C	Low 62°F17°C	Precip 0 in0 mm—	Cloud 5%	Wind WSW 4 mph7 km/h	Friday: Mostly clear and warm, with a high of 83°F28°C and morning low of 65°F19°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.
Clear	High 77°F25°C	Low 58°F14°C	Precip 0 in0 mm—	Cloud 10%	Wind W 5 mph8 km/h	Saturday: Mostly clear and warm, with a high of 77°F25°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.
Clear	High 76°F25°C	Low 54°F12°C	Precip 0 in0 mm—	Cloud 10%	Wind WNW 5 mph8 km/h	Sunday: Mostly clear and warm, with a high of 76°F25°C and morning low of 58°F15°C. Breezy from the NW at 6 to 8 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.
Clear	High 79°F26°C	Low 55°F13°C	Precip 0 in0 mm—	Cloud 11%	Wind WNW 4 mph6 km/h	Monday: Mostly clear and warm, with a high of 79°F26°C and morning low of 58°F14°C. Breezy from the WNW at 4 to 7 mph7 to 11 km/h. Dry air. Monday Night: Mostly clear, with a low around 55°F13°C. Light wind from the W around 3 mph5 km/h.
Clear	High 76°F25°C	Low 56°F13°C	Precip 0 in0 mm—	Cloud 27%	Wind WSW 4 mph6 km/h	Tuesday: Mostly clear and warm, with a high of 76°F25°C and morning low of 58°F15°C. Light wind from the WSW around 4 mph7 km/h. Dry air. Tuesday Night: Partly cloudy, with a low around 56°F13°C. Light wind from the SW around 3 mph5 km/h.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	WednesdaySep 9	95°F35°C	67°F19°C	0 in0 mm· —	60%	Partly Cloudy	N 4 mph6 km/h
DayMostly cloudy and hot, with a high of 95°F35°C and morning low of 71°F21°C. Light wind from the N around 4 mph7 km/h. Dry air. NightMostly cloudy, with a low around 67°F19°C. Light wind from the N around 3 mph5 km/h.
	ThursdaySep 10	92°F33°C	70°F21°C	0 in0 mm· —	21%	Clear	W 4 mph7 km/h
DayPartly cloudy and hot, with a high of 92°F33°C and morning low of 75°F24°C. Breezy from the W at 6 to 8 mph9 to 13 km/h. Dry air. NightMostly clear, with a low around 70°F21°C. Light wind from the W around 3 mph5 km/h.
	FridaySep 11	83°F28°C	62°F17°C	0 in0 mm· —	5%	Clear	WSW 4 mph7 km/h
DayMostly clear and warm, with a high of 83°F28°C and morning low of 65°F19°C. Light wind from the W around 5 mph8 km/h. Dry air. NightMostly clear, with a low around 62°F17°C. Light wind from the WSW around 3 mph5 km/h.
	SaturdaySep 12	77°F25°C	58°F14°C	0 in0 mm· —	10%	Clear	W 5 mph8 km/h
DayMostly clear and warm, with a high of 77°F25°C and morning low of 60°F16°C. Breezy from the W at 6 to 8 mph10 to 14 km/h. Dry air. NightMostly clear, with a low around 58°F14°C. Light wind from the W around 4 mph7 km/h.
	SundaySep 13	76°F25°C	54°F12°C	0 in0 mm· —	10%	Clear	WNW 5 mph8 km/h
DayMostly clear and warm, with a high of 76°F25°C and morning low of 58°F15°C. Breezy from the NW at 6 to 8 mph10 to 12 km/h. Dry air. NightMostly clear, with a low around 54°F12°C. Light wind from the WNW around 4 mph6 km/h.
	MondaySep 14	79°F26°C	55°F13°C	0 in0 mm· —	11%	Clear	WNW 4 mph6 km/h
DayMostly clear and warm, with a high of 79°F26°C and morning low of 58°F14°C. Breezy from the WNW at 4 to 7 mph7 to 11 km/h. Dry air. NightMostly clear, with a low around 55°F13°C. Light wind from the W around 3 mph5 km/h.
	TuesdaySep 15	76°F25°C	56°F13°C	0 in0 mm· —	27%	Clear	WSW 4 mph6 km/h
DayMostly clear and warm, with a high of 76°F25°C and morning low of 58°F15°C. Light wind from the WSW around 4 mph7 km/h. Dry air. NightPartly cloudy, with a low around 56°F13°C. Light wind from the SW around 3 mph5 km/h.
	WednesdaySep 16	75°F24°C	56°F13°C	0 in0 mm· —	23%	Clear	WSW 4 mph6 km/h
DayMostly clear and warm, with a high of 75°F24°C and morning low of 58°F14°C. Light wind from the WSW around 5 mph7 km/h. Dry air. NightPartly cloudy, with a low around 56°F13°C. Light wind from the WSW around 3 mph5 km/h.
	ThursdaySep 17	78°F25°C	56°F13°C	0 in0 mm· —	18%	Clear	W 3 mph5 km/h
DayMostly clear and warm, with a high of 78°F25°C and morning low of 58°F15°C. Light wind from the W around 4 mph6 km/h. Dry air. NightMostly clear, with a low around 56°F13°C. Light wind from the W around 3 mph4 km/h.
	FridaySep 18	79°F26°C	57°F14°C	0 in0.1 mm· 3%	21%	Clear	W 3 mph5 km/h
DayMostly clear and warm, with a high of 79°F26°C and morning low of 59°F15°C. Light wind from the W around 4 mph6 km/h. Dry air. NightMostly clear, with a low around 57°F14°C. Light wind from the WNW around 3 mph5 km/h.
	SaturdaySep 19	78°F26°C	58°F14°C	0 in0.1 mm· 2%	28%	Clear	W 4 mph6 km/h
DayPartly cloudy and warm, with a high of 78°F26°C and morning low of 60°F15°C. Light wind from the W around 4 mph7 km/h. Dry air. NightPartly cloudy, with a low around 58°F14°C. Light wind from the WNW around 3 mph5 km/h.
	SundaySep 20	78°F26°C	58°F14°C	0.02 in0.4 mm· 3%	32%	Clear	W 4 mph6 km/h
DayPartly cloudy and warm, with a high of 78°F26°C and morning low of 61°F16°C. Light wind from the W around 4 mph7 km/h. Dry air. NightPartly cloudy, with a low around 58°F14°C. Light wind from the W around 3 mph5 km/h.
	MondaySep 21	79°F26°C	59°F15°C	0 in0.1 mm· 3%	29%	Clear	W 4 mph6 km/h
DayPartly cloudy and warm, with a high of 79°F26°C and morning low of 61°F16°C. Light wind from the W around 4 mph7 km/h. Dry air. NightPartly cloudy, with a low around 59°F15°C. Light wind from the W around 3 mph5 km/h.
	TuesdaySep 22	80°F27°C	58°F15°C	0.01 in0.2 mm· 3%	27%	Clear	W 4 mph6 km/h
DayPartly cloudy and warm, with a high of 80°F27°C and morning low of 61°F16°C. Light wind from the WNW around 5 mph7 km/h. Dry air. NightPartly cloudy, with a low around 58°F15°C. Light wind from the W around 3 mph5 km/h.
	WednesdaySep 23	80°F27°C	59°F15°C	0 in0.1 mm· 3%	27%	Clear	W 4 mph6 km/h
DayPartly cloudy and warm, with a high of 80°F27°C and morning low of 61°F16°C. Light wind from the W around 4 mph7 km/h. Dry air. NightPartly cloudy, with a low around 59°F15°C. Light wind from the WSW around 3 mph4 km/h.

Nearby Cities

San Jose4 mi7 km Milpitas6 mi10 km Santa Clara7 mi11 km Campbell9 mi14 km Sunnyvale11 mi18 km Cupertino12 mi19 km

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.

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