Current Conditions

Union City, California

54°F12°C

Low chance of drizzle

There is a low chance of drizzle. Temperatures will hold near 55°F. Mostly clear.There is a low chance of drizzle. Temperatures will hold near 13°C. Mostly clear.

Wind

S 4 mph7 km/h

Humidity

84%

Cloud Cover

70%

As of Sunday, November 1, 2026 at 12:49 AM PDT

Today's Outlook

Day

There is a medium chance of brief drizzle in the morning. Temperatures will range from 52°F to 63°F. Partly cloudy.There is a medium chance of brief drizzle in the morning. Temperatures will range from 11°C to 17°C. Partly cloudy.

Night

Mostly clear. Temperatures will range from 48°F to 62°F.Mostly clear. Temperatures will range from 9°C to 17°C.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Light rain	High 63°F17°C	Low 51°F11°C	Precip 0.09 in2.2 mm89%	Cloud 40%	Wind WNW 5 mph8 km/h	There is a medium chance of brief drizzle in the morning. Temperatures will range from 52°F to 63°F. Partly cloudy.There is a medium chance of brief drizzle in the morning. Temperatures will range from 11°C to 17°C. Partly cloudy.Mostly clear. Temperatures will range from 48°F to 62°F.Mostly clear. Temperatures will range from 9°C to 17°C.
Cloudy	High 64°F18°C	Low 48°F9°C	Precip 0 in0 mm—	Cloud 90%	Wind ESE 4 mph6 km/h	Cloudy. Temperatures will range from 51°F to 64°F.Cloudy. Temperatures will range from 11°C to 18°C.Mostly cloudy. Temperatures will range from 52°F to 63°F. There is a marginal chance of brief drizzle before dawn.Mostly cloudy. Temperatures will range from 11°C to 17°C. There is a marginal chance of brief drizzle before dawn.
Drizzle is likely	High 61°F16°C	Low 52°F11°C	Precip 0.1 in2.5 mm66%	Cloud 71%	Wind SSE 6 mph10 km/h	Drizzle is likely throughout the day. Temperatures will range from 52°F to 61°F. Mostly cloudy, with a breeze from the S at 8 mph.Drizzle is likely throughout the day. Temperatures will range from 11°C to 16°C. Mostly cloudy, with a breeze from the S at 13 km/h.There is a low chance of brief drizzle in the evening. Temperatures will range from 53°F to 61°F. Mostly cloudy.There is a low chance of brief drizzle in the evening. Temperatures will range from 12°C to 16°C. Mostly cloudy.
Partly cloudy	High 64°F18°C	Low 53°F11°C	Precip 0.01 in0.2 mm8%	Cloud 66%	Wind NNW 5 mph9 km/h	Mostly cloudy. Temperatures will range from 53°F to 64°F.Mostly cloudy. Temperatures will range from 12°C to 18°C.Partly cloudy. Temperatures will range from 51°F to 63°F.Partly cloudy. Temperatures will range from 11°C to 17°C.
Mostly clear	High 67°F19°C	Low 51°F11°C	Precip 0 in0 mm—	Cloud 46%	Wind WSW 5 mph8 km/h	Mostly clear. Temperatures will range from 53°F to 67°F.Mostly clear. Temperatures will range from 12°C to 19°C.Mostly clear. Temperatures will range from 51°F to 66°F.Mostly clear. Temperatures will range from 11°C to 19°C.
Clear	High 69°F21°C	Low 51°F11°C	Precip 0 in0 mm—	Cloud 37%	Wind SSW 4 mph7 km/h	Mostly cloudy. Temperatures will range from 53°F to 69°F.Mostly cloudy. Temperatures will range from 12°C to 21°C.Clear. Temperatures will range from 52°F to 68°F.Clear. Temperatures will range from 11°C to 20°C.
Mostly clear	High 71°F22°C	Low 52°F11°C	Precip 0 in0 mm—	Cloud 35%	Wind SE 5 mph8 km/h	Mostly clear. Temperatures will range from 54°F to 71°F.Mostly clear. Temperatures will range from 12°C to 22°C.Partly cloudy. Temperatures will range from 53°F to 70°F.Partly cloudy. Temperatures will range from 12°C to 21°C.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	SundayNov 1	63°F17°C	51°F11°C	0.09 in2.2 mm· 89%	40%	Light rain	WNW 5 mph8 km/h
DayThere is a medium chance of brief drizzle in the morning. Temperatures will range from 52°F to 63°F. Partly cloudy.There is a medium chance of brief drizzle in the morning. Temperatures will range from 11°C to 17°C. Partly cloudy. NightMostly clear. Temperatures will range from 48°F to 62°F.Mostly clear. Temperatures will range from 9°C to 17°C.
	MondayNov 2	64°F18°C	48°F9°C	0 in0 mm· —	90%	Cloudy	ESE 4 mph6 km/h
DayCloudy. Temperatures will range from 51°F to 64°F.Cloudy. Temperatures will range from 11°C to 18°C. NightMostly cloudy. Temperatures will range from 52°F to 63°F. There is a marginal chance of brief drizzle before dawn.Mostly cloudy. Temperatures will range from 11°C to 17°C. There is a marginal chance of brief drizzle before dawn.
	TuesdayNov 3	61°F16°C	52°F11°C	0.1 in2.5 mm· 66%	71%	Drizzle is likely	SSE 6 mph10 km/h
DayDrizzle is likely throughout the day. Temperatures will range from 52°F to 61°F. Mostly cloudy, with a breeze from the S at 8 mph.Drizzle is likely throughout the day. Temperatures will range from 11°C to 16°C. Mostly cloudy, with a breeze from the S at 13 km/h. NightThere is a low chance of brief drizzle in the evening. Temperatures will range from 53°F to 61°F. Mostly cloudy.There is a low chance of brief drizzle in the evening. Temperatures will range from 12°C to 16°C. Mostly cloudy.
	WednesdayNov 4	64°F18°C	53°F11°C	0.01 in0.2 mm· 8%	66%	Partly cloudy	NNW 5 mph9 km/h
DayMostly cloudy. Temperatures will range from 53°F to 64°F.Mostly cloudy. Temperatures will range from 12°C to 18°C. NightPartly cloudy. Temperatures will range from 51°F to 63°F.Partly cloudy. Temperatures will range from 11°C to 17°C.
	ThursdayNov 5	67°F19°C	51°F11°C	0 in0 mm· —	46%	Mostly clear	WSW 5 mph8 km/h
DayMostly clear. Temperatures will range from 53°F to 67°F.Mostly clear. Temperatures will range from 12°C to 19°C. NightMostly clear. Temperatures will range from 51°F to 66°F.Mostly clear. Temperatures will range from 11°C to 19°C.
	FridayNov 6	69°F21°C	51°F11°C	0 in0 mm· —	37%	Clear	SSW 4 mph7 km/h
DayMostly cloudy. Temperatures will range from 53°F to 69°F.Mostly cloudy. Temperatures will range from 12°C to 21°C. NightClear. Temperatures will range from 52°F to 68°F.Clear. Temperatures will range from 11°C to 20°C.
	SaturdayNov 7	71°F22°C	52°F11°C	0 in0 mm· —	35%	Mostly clear	SE 5 mph8 km/h
DayMostly clear. Temperatures will range from 54°F to 71°F.Mostly clear. Temperatures will range from 12°C to 22°C. NightPartly cloudy. Temperatures will range from 53°F to 70°F.Partly cloudy. Temperatures will range from 12°C to 21°C.
	SundayNov 8	70°F21°C	53°F12°C	0 in0 mm· —	69%	Mostly cloudy	S 5 mph7 km/h
DayMostly cloudy. Temperatures will range from 55°F to 70°F.Mostly cloudy. Temperatures will range from 13°C to 21°C. NightMostly cloudy. Temperatures will range from 53°F to 69°F.Mostly cloudy. Temperatures will range from 12°C to 21°C.
	MondayNov 9	67°F19°C	53°F12°C	0 in0.1 mm· 3%	73%	Mostly cloudy	SSW 5 mph8 km/h
DayMostly cloudy. Temperatures will range from 55°F to 67°F.Mostly cloudy. Temperatures will range from 13°C to 19°C. NightMostly cloudy. Temperatures will range from 54°F to 66°F. There is a marginal chance of light rain before dawn.Mostly cloudy. Temperatures will range from 12°C to 19°C. There is a marginal chance of light rain before dawn.
	TuesdayNov 10	65°F18°C	54°F12°C	0.1 in2.6 mm· 17%	61%	Low chance of showers	SSW 6 mph10 km/h
DayPartly cloudy. Temperatures will range from 55°F to 65°F. There is a marginal chance of showers throughout the day.Partly cloudy. Temperatures will range from 13°C to 18°C. There is a marginal chance of showers throughout the day. NightThere is a low chance of showers overnight. Temperatures will range from 56°F to 64°F. Partly cloudy, with a breeze from the S at 7 mph.There is a low chance of showers overnight. Temperatures will range from 13°C to 18°C. Partly cloudy, with a breeze from the S at 11 km/h.
	WednesdayNov 11	62°F17°C	56°F13°C	0.38 in9.6 mm· 33%	67%	Low chance of showers	SSW 7 mph12 km/h
DayThere is a low chance of showers throughout the day. Temperatures will range from 57°F to 62°F. Mostly cloudy, with a breeze from the SSW at 8 mph.There is a low chance of showers throughout the day. Temperatures will range from 14°C to 17°C. Mostly cloudy, with a breeze from the SSW at 13 km/h. NightThere is a low chance of showers in the evening. Temperatures will range from 54°F to 62°F. Mostly cloudy, with a breeze from the SSW at 7–8 mph.There is a low chance of showers in the evening. Temperatures will range from 12°C to 17°C. Mostly cloudy, with a breeze from the SSW at 11–13 km/h.
	ThursdayNov 12	61°F16°C	54°F12°C	0.33 in8.4 mm· 41%	69%	Medium chance of showers	SSW 7 mph11 km/h
DayThere is a medium chance of showers for much of the day. Temperatures will range from 55°F to 61°F. Mostly cloudy, with a breeze from the SSW at 7 mph.There is a medium chance of showers for much of the day. Temperatures will range from 13°C to 16°C. Mostly cloudy, with a breeze from the SSW at 11 km/h. NightThere is a low chance of showers for much of the night. Temperatures will range from 54°F to 61°F. Mostly cloudy.There is a low chance of showers for much of the night. Temperatures will range from 12°C to 16°C. Mostly cloudy.
	FridayNov 13	60°F16°C	54°F12°C	0.4 in10.2 mm· 39%	73%	Low chance of showers	SSW 7 mph11 km/h
DayThere is a medium chance of light rain throughout the day. Temperatures will range from 54°F to 60°F. Mostly cloudy, with a breeze from the SSW at 7 mph.There is a medium chance of light rain throughout the day. Temperatures will range from 12°C to 16°C. Mostly cloudy, with a breeze from the SSW at 11 km/h. NightThere is a medium chance of light rain throughout the night. Temperatures will range from 53°F to 60°F. Mostly cloudy.There is a medium chance of light rain throughout the night. Temperatures will range from 12°C to 16°C. Mostly cloudy.
	SaturdayNov 14	59°F15°C	53°F12°C	0.5 in12.6 mm· 50%	75%	Medium chance of showers	S 7 mph11 km/h
DayThere is a medium chance of brief showers in the afternoon. Temperatures will range from 53°F to 59°F. Mostly cloudy, with a breeze from the SSW at 7 mph.There is a medium chance of brief showers in the afternoon. Temperatures will range from 12°C to 15°C. Mostly cloudy, with a breeze from the SSW at 11 km/h. NightThere is a medium chance of showers in the evening. Temperatures will range from 52°F to 59°F. Mostly cloudy.There is a medium chance of showers in the evening. Temperatures will range from 11°C to 15°C. Mostly cloudy.
	SundayNov 15	58°F15°C	52°F11°C	0.29 in7.4 mm· 50%	72%	Medium chance of showers	SSW 6 mph10 km/h
DayThere is a medium chance of showers in the afternoon. Temperatures will range from 53°F to 57°F. Mostly cloudy.There is a medium chance of showers in the afternoon. Temperatures will range from 12°C to 14°C. Mostly cloudy.

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 WindBorne MetaMesh, with local forecasts and detailed descriptions for day and night.

Explore WindBorne's weather-model benchmarks. View Benchmarks →

Access these forecasts programmatically via our API. API Documentation →

How to Access Weather Forecasts

Pattern	Example	Description
/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=11.5	Find 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: 37.5958°N, 122.0191°W·Elevation: 21m·Timezone: America/Los_Angeles·Population: 74,494