Marine Weather Net

Port Costa, CA Weather Forecast




Crockett, California

 Lat: 38.05N, Lon: 122.21W

Current Conditions Updated: 1053 AM PDT SUN JUN 21 2026

Mostly Clear
Temp: 68°F
  • Humidity:
  • 63%
  • Winds:
  • 9 MPH S
  • Gusts:
  • N/A MPH
  • Barometer:
  • 29.91 in.
  • Dewpoint:
  • 55°F
  • Heat index:
  • 68°F

  • Sunrise:
  • 5:46 AM PDT
  • Sunset:
  • 8:34 PM PDT
  • Moonrise:
  • 5:18 PM PDT
  • Moonset:
  • 2:23 AM PDT

TONIGHT

MOSTLY CLEAR
Lo: 55°F

THURSDAY

SUNNY

Hi: 85°F
Lo: 59°F

FRIDAY

SUNNY

Hi: 75°F
Lo: 55°F

SATURDAY

SUNNY

Hi: 75°F
Lo: 55°F
Weather Forecast In Detail:
Forecast Issued: 901 PM PDT Wed Jun 24 2026

Rest Of Tonight...Mostly clear. Lows in the mid 50s. West winds 5 to 15 mph.
Thursday...Sunny. Highs in the 80s. West winds 5 to 10 mph increasing to 10 to 20 mph in the afternoon.
Thursday Night...Partly cloudy. Lows in the upper 50s. Southwest winds 10 to 20 mph.
Friday...Partly cloudy in the morning then becoming sunny. Highs in the mid 70s to lower 80s. Southwest winds 10 to 20 mph.
Friday Night...Mostly clear in the evening then becoming partly cloudy. Lows in the mid 50s. Southwest winds 15 to 20 mph with gusts to around 35 mph.
Saturday...Partly cloudy in the morning then becoming sunny. Highs in the 70s.
Saturday Night...Clear. Lows in the mid 50s. Highs in the lower 80s.
Sunday...Clear. Lows in the mid 50s. Highs in the lower 80s.
Monday...Sunny. Highs in the mid 80s.
Monday Night...Clear. Lows in the mid 50s.
Tuesday...Sunny. Highs in the mid 80s.
Tuesday Night...Clear. Lows in the mid 50s.
Wednesday...Partly cloudy in the morning then becoming sunny. Highs in the lower 80s. && temperature / precipitation concord 55 84 56 78 / livermore 55 83 55 74 /
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