Current Conditions

Union City, California

77°F25°C

Partly Cloudy

Wind

SW 8 mph12 km/h

Humidity

46%

Cloud Cover

58%

As of Wednesday, August 12, 2026 at 3:25 PM PDT

Today's Outlook

Day

Mostly cloudy and warm, with a high of 77°F25°C and morning low of 70°F21°C. Breezy from the SW at 7 to 8 mph12 to 13 km/h.

Night

Mostly cloudy, with a low around 63°F17°C. Breezy from the SW at 7 mph11 km/h.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Partly Cloudy	High 77°F25°C	Low 63°F17°C	Precip 0 in0 mm—	Cloud 67%	Wind SW 7 mph11 km/h	Wednesday: Mostly cloudy and warm, with a high of 77°F25°C and morning low of 70°F21°C. Breezy from the SW at 7 to 8 mph12 to 13 km/h. Wednesday Night: Mostly cloudy, with a low around 63°F17°C. Breezy from the SW at 7 mph11 km/h.
Partly Cloudy	High 71°F21°C	Low 60°F15°C	Precip 0 in0 mm—	Cloud 70%	Wind SW 8 mph13 km/h	Thursday: Mostly cloudy and warm, with a high of 71°F21°C and morning low of 61°F16°C. Breezy from the SW at 9 to 10 mph15 to 16 km/h. Thursday Night: Overcast, with a low around 60°F15°C. Breezy from the SW at 7 to 8 mph12 to 13 km/h.
Partly Cloudy	High 71°F22°C	Low 59°F15°C	Precip 0 in0.1 mm—	Cloud 68%	Wind SW 7 mph11 km/h	Friday: Mostly cloudy and warm, with a high of 71°F22°C and morning low of 61°F16°C. Breezy from the SW at 7 to 9 mph12 to 14 km/h. Friday Night: Mostly cloudy, with a low around 59°F15°C. Light wind from the WSW around 6 mph9 km/h.
Partly Cloudy	High 73°F23°C	Low 58°F14°C	Precip 0 in0 mm—	Cloud 67%	Wind WSW 5 mph8 km/h	Saturday: Mostly cloudy and warm, with a high of 73°F23°C and morning low of 60°F16°C. Breezy from the WSW at 6 to 8 mph10 to 13 km/h. Saturday Night: Mostly cloudy, with a low around 58°F14°C. Light wind from the WSW around 5 mph7 km/h.
Cloudy	High 75°F24°C	Low 57°F14°C	Precip 0 in0 mm—	Cloud 81%	Wind WSW 4 mph7 km/h	Sunday: Mostly cloudy and warm, with a high of 75°F24°C and morning low of 59°F15°C. Breezy from the W at 5 to 7 mph8 to 12 km/h. Sunday Night: Overcast, with a low around 57°F14°C. Light wind from the WSW around 4 mph6 km/h.
Cloudy	High 74°F23°C	Low 58°F15°C	Precip 0 in0 mm—	Cloud 83%	Wind WSW 5 mph8 km/h	Monday: Mostly cloudy and warm, with a high of 74°F23°C and morning low of 60°F16°C. Breezy from the WSW at 5 to 7 mph9 to 11 km/h. Monday Night: Overcast, with a low around 58°F15°C. Light wind from the WSW around 4 mph6 km/h.
Partly Cloudy	High 75°F24°C	Low 58°F15°C	Precip 0 in0 mm—	Cloud 61%	Wind WSW 5 mph8 km/h	Tuesday: Mostly cloudy and warm, with a high of 75°F24°C and morning low of 60°F16°C. Breezy from the WSW at 5 to 7 mph9 to 11 km/h. Tuesday Night: Mostly cloudy, with a low around 58°F15°C. Light wind from the SW around 4 mph6 km/h.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	WednesdayAug 12	77°F25°C	63°F17°C	0 in0 mm· —	67%	Partly Cloudy	SW 7 mph11 km/h
DayMostly cloudy and warm, with a high of 77°F25°C and morning low of 70°F21°C. Breezy from the SW at 7 to 8 mph12 to 13 km/h. NightMostly cloudy, with a low around 63°F17°C. Breezy from the SW at 7 mph11 km/h.
	ThursdayAug 13	71°F21°C	60°F15°C	0 in0 mm· —	70%	Partly Cloudy	SW 8 mph13 km/h
DayMostly cloudy and warm, with a high of 71°F21°C and morning low of 61°F16°C. Breezy from the SW at 9 to 10 mph15 to 16 km/h. NightOvercast, with a low around 60°F15°C. Breezy from the SW at 7 to 8 mph12 to 13 km/h.
	FridayAug 14	71°F22°C	59°F15°C	0 in0.1 mm· —	68%	Partly Cloudy	SW 7 mph11 km/h
DayMostly cloudy and warm, with a high of 71°F22°C and morning low of 61°F16°C. Breezy from the SW at 7 to 9 mph12 to 14 km/h. NightMostly cloudy, with a low around 59°F15°C. Light wind from the WSW around 6 mph9 km/h.
	SaturdayAug 15	73°F23°C	58°F14°C	0 in0 mm· —	67%	Partly Cloudy	WSW 5 mph8 km/h
DayMostly cloudy and warm, with a high of 73°F23°C and morning low of 60°F16°C. Breezy from the WSW at 6 to 8 mph10 to 13 km/h. NightMostly cloudy, with a low around 58°F14°C. Light wind from the WSW around 5 mph7 km/h.
	SundayAug 16	75°F24°C	57°F14°C	0 in0 mm· —	81%	Cloudy	WSW 4 mph7 km/h
DayMostly cloudy and warm, with a high of 75°F24°C and morning low of 59°F15°C. Breezy from the W at 5 to 7 mph8 to 12 km/h. NightOvercast, with a low around 57°F14°C. Light wind from the WSW around 4 mph6 km/h.
	MondayAug 17	74°F23°C	58°F15°C	0 in0 mm· —	83%	Cloudy	WSW 5 mph8 km/h
DayMostly cloudy and warm, with a high of 74°F23°C and morning low of 60°F16°C. Breezy from the WSW at 5 to 7 mph9 to 11 km/h. NightOvercast, with a low around 58°F15°C. Light wind from the WSW around 4 mph6 km/h.
	TuesdayAug 18	75°F24°C	58°F15°C	0 in0 mm· —	61%	Partly Cloudy	WSW 5 mph8 km/h
DayMostly cloudy and warm, with a high of 75°F24°C and morning low of 60°F16°C. Breezy from the WSW at 5 to 7 mph9 to 11 km/h. NightMostly cloudy, with a low around 58°F15°C. Light wind from the SW around 4 mph6 km/h.
	WednesdayAug 19	76°F24°C	58°F14°C	0 in0 mm· —	45%	Partly Cloudy	WSW 5 mph8 km/h
DayPartly cloudy and warm, with a high of 76°F24°C and morning low of 61°F16°C. Breezy from the WSW at 6 to 8 mph9 to 12 km/h. NightMostly cloudy, with a low around 58°F14°C. Light wind from the SW around 4 mph7 km/h.
	ThursdayAug 20	76°F25°C	58°F15°C	0 in0 mm· —	38%	Clear	WSW 5 mph8 km/h
DayPartly cloudy and warm, with a high of 76°F25°C and morning low of 61°F16°C. Breezy from the WSW at 6 to 8 mph9 to 12 km/h. NightPartly cloudy, with a low around 58°F15°C. Light wind from the SW around 4 mph6 km/h.
	FridayAug 21	78°F26°C	59°F15°C	0 in0 mm· —	33%	Clear	WSW 5 mph7 km/h
DayPartly cloudy and warm, with a high of 78°F26°C and morning low of 62°F17°C. Breezy from the WSW at 5 to 7 mph9 to 12 km/h. NightPartly cloudy, with a low around 59°F15°C. Light wind from the SW around 4 mph6 km/h.
	SaturdayAug 22	79°F26°C	60°F15°C	0 in0 mm· —	29%	Clear	WSW 4 mph7 km/h
DayPartly cloudy and warm, with a high of 79°F26°C and morning low of 62°F17°C. Breezy from the WSW at 5 to 7 mph8 to 11 km/h. NightPartly cloudy, with a low around 60°F15°C. Light wind from the SW around 4 mph6 km/h.
	SundayAug 23	80°F27°C	60°F16°C	0 in0 mm· —	29%	Clear	WSW 4 mph7 km/h
DayMostly clear and warm, with a high of 80°F27°C and morning low of 63°F17°C. Breezy from the WSW at 5 to 7 mph9 to 12 km/h. NightPartly cloudy, with a low around 60°F16°C. Light wind from the SW around 4 mph6 km/h.
	MondayAug 24	79°F26°C	60°F16°C	0 in0 mm· —	32%	Clear	WSW 5 mph7 km/h
DayPartly cloudy and warm, with a high of 79°F26°C and morning low of 62°F17°C. Breezy from the WSW at 5 to 7 mph9 to 12 km/h. NightPartly cloudy, with a low around 60°F16°C. Light wind from the SW around 4 mph6 km/h.
	TuesdayAug 25	79°F26°C	60°F16°C	0 in0 mm· —	35%	Clear	WSW 5 mph7 km/h
DayPartly cloudy and warm, with a high of 79°F26°C and morning low of 62°F17°C. Breezy from the WSW at 5 to 7 mph9 to 11 km/h. NightPartly cloudy, with a low around 60°F16°C. Light wind from the SW around 4 mph6 km/h.
	WednesdayAug 26	78°F25°C	59°F15°C	0 in0 mm· —	40%	Clear	WSW 5 mph8 km/h
DayPartly cloudy and warm, with a high of 78°F25°C and morning low of 62°F17°C. Breezy from the WSW at 5 to 7 mph9 to 12 km/h. NightPartly cloudy, with a low around 59°F15°C. Light wind from the SW around 4 mph6 km/h.

Nearby Cities

Fremont4 mi6 km Newark5 mi8 km Hayward6 mi10 km Castro Valley8 mi12 km San Lorenzo8 mi13 km Ashland9 mi14 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: 37.5958°N, 122.0191°W·Elevation: 21m·Timezone: America/Los_Angeles·Population: 74,494