Marine Weather Net

Union City, CA Weather Forecast




Union City, California

 Lat: 37.60N, Lon: 122.02W

Current Conditions Updated: 354 PM PDT SAT APR 18 2026

Clear


Temp: 75°F
  • Humidity:
  • 23%
  • Winds:
  • 12 MPH W
  • Gusts:
  • N/A MPH
  • Barometer:
  • 29.93 in.
  • Dewpoint:
  • 35°F
  • Heat index:
  • 76°F

  • Sunrise:
  • 6:27 AM PDT
  • Sunset:
  • 7:45 PM PDT
  • Moonrise:
  • 6:54 AM PDT
  • Moonset:
  • 9:52 PM PDT

REST OF TODAY

PARTLY CLOUDY
Hi: 75°F
Lo: 51°F

SUNDAY

SUNNY

Hi: 70°F
Lo: 51°F

MONDAY

CHANCE OF SHOWERS
Hi: 71°F
Lo: 55°F
Precip: 50%

TUESDAY

CHANCE OF T-STORM
Hi: 65°F
Lo: 51°F
Weather Forecast In Detail:
Forecast Issued: 302 PM PDT Sat Apr 18 2026

Rest Of Today...Partly cloudy. Highs in the 70s. Northwest winds 5 to 10 mph.
Tonight...Mostly cloudy. Lows in the lower 50s. Northwest winds around 5 mph in the evening...Becoming light.
Sunday...Mostly cloudy in the morning then becoming sunny. Highs in the upper 60s to mid 70s. West winds up to 5 mph increasing to 5 to 15 mph in the afternoon.
Sunday Night...Partly cloudy. A chance of showers after midnight. Lows in the lower 50s. West winds 5 to 15 mph... Becoming south 5 to 10 mph after midnight. Chance of showers 40 percent.
Monday...Mostly cloudy. A chance of showers. Highs in the lower 70s. Southeast winds 5 to 10 mph...Becoming south 10 to 20 mph in the afternoon. Chance of showers 50 percent.
Monday Night...Showers. Lows in the mid 50s.
Tuesday...Showers and a chance of thunderstorms. Highs in the mid 60s.
Tuesday Night...Showers likely and a slight chance of thunderstorms. Lows in the lower 50s.
Wednesday...Mostly cloudy. A chance of showers. Highs in the mid 60s.
Wednesday Night...Mostly clear. Lows in the upper 40s. Highs near 70. && temperature / precipitation sfo airport 70 52 68 / oakland 75 53 70 / fremont 78 51 74 / redwood city 77 51 75 / mountain view 73 53 71 /
Thursday...Mostly clear. Lows in the upper 40s. Highs near 70. && temperature / precipitation sfo airport 70 52 68 / oakland 75 53 70 / fremont 78 51 74 / redwood city 77 51 75 / mountain view 73 53 71 /
Friday...Mostly clear. Lows in the upper 40s. Highs near 70. && temperature / precipitation sfo airport 70 52 68 / oakland 75 53 70 / fremont 78 51 74 / redwood city 77 51 75 / mountain view 73 53 71 /
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