Marine Weather Net

Union City, CA Weather Forecast




Union City, California

 Lat: 37.60N, Lon: 122.02W

Current Conditions Updated: 554 PM PST THU FEB 12 2026

Clear


Temp: 57°F
  • Humidity:
  • 77%
  • Winds:
  • 10 MPH WNW
  • Gusts:
  • N/A MPH
  • Barometer:
  • 30.17 in.
  • Dewpoint:
  • 50°F
  • Heat index:
  • 57°F

  • Sunrise:
  • 7:01 AM PST
  • Sunset:
  • 5:41 PM PST
  • Moonrise:
  • 4:00 AM PST
  • Moonset:
  • 1:00 PM PST

TONIGHT

PARTLY CLOUDY
Lo: 47°F

FRIDAY

PARTLY CLOUDY
Hi: 61°F
Lo: 45°F

SATURDAY

CHANCE OF SHOWERS
Hi: 60°F
Lo: 50°F
Precip: 20%

SUNDAY

SHOWERS
Hi: 61°F
Lo: 45°F
Weather Forecast In Detail:
Forecast Issued: 501 PM PST Thu Feb 12 2026

Tonight...Mostly clear in the evening then becoming partly cloudy. Patchy fog after midnight. Lows in the upper 40s. Northwest winds 5 to 10 mph...Becoming south after midnight.
Friday...Mostly cloudy in the morning then becoming partly cloudy. Patchy fog in the morning. Highs in the lower 60s. Southwest winds up to 5 mph...Becoming west in the afternoon.
Friday Night...Mostly cloudy. Patchy fog after midnight. Lows in the 40s. West winds 5 to 10 mph in the evening...Becoming light.
Saturday...Mostly cloudy. A slight chance of showers in the afternoon. Highs near 60. South winds 5 to 15 mph. Chance of showers 20 percent.
Saturday Night...A slight chance of showers in the evening, then showers likely after midnight. Lows around 50. South winds 10 to 20 mph. Chance of showers 70 percent.
Sunday...Showers likely. Highs in the lower 60s.
Sunday Night And Washingtons Birthday...Showers. Lows in the upper 40s. Highs in the upper 50s.
Monday Night...Showers and a slight chance of thunderstorms. Lows in the mid 40s.
Tuesday...Showers. Highs in the mid 50s.
Tuesday Night...Showers likely. Lows in the lower to mid 40s. Highs in the upper 50s. && temperature / precipitation sfo airport 48 59 48 58 / 20 oakland 48 62 46 61 / 20 fremont 45 63 43 62 / 20 redwood city 47 63 45 62 / 20 mountain view 46 61 45 60 / 20
Wednesday...Showers likely. Lows in the lower to mid 40s. Highs in the upper 50s. && temperature / precipitation sfo airport 48 59 48 58 / 20 oakland 48 62 46 61 / 20 fremont 45 63 43 62 / 20 redwood city 47 63 45 62 / 20 mountain view 46 61 45 60 / 20
Thursday...Showers likely. Lows in the lower to mid 40s. Highs in the upper 50s. && temperature / precipitation sfo airport 48 59 48 58 / 20 oakland 48 62 46 61 / 20 fremont 45 63 43 62 / 20 redwood city 47 63 45 62 / 20 mountain view 46 61 45 60 / 20
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