Port Costa, California Weather
Port Costa, California — live current conditions, hourly and 7-day forecasts, NWS alerts, radar and satellite imagery, tide predictions, marine conditions and a solunar fishing forecast, soil and crop conditions for Port Costa, Contra Costa County.
Tides, marine forecast and fishing conditions near Port Costa. Tide source:
Full aviation weather for Port Costa is published on the Buchanan Field (KCCR) page, 13 km away. It carries the current METAR decoded into plain language — surface wind, visibility, cloud layers and ceiling, temperature and dewpoint, and altimeter setting — alongside the raw observation as transmitted. 6 airfields within reach of Port Costa have their own pages, listed below.
The Terminal Aerodrome Forecast (TAF) is shown across its full validity period, with each change group broken out so you can see when conditions are expected to shift. Flight category is derived automatically — VFR, MVFR, IFR or LIFR — from reported ceiling and visibility, with runway details and field elevation alongside. Observations update roughly hourly and forecasts several times a day.
Other airports near Port Costa: Napa County Airport (KAPC) 20 km · Travis Air Force Base (KSUU) 33 km · Marin County Airport - Gnoss Field (KDVO) 34 km · Oakland San Francisco Bay Airport (KOAK) 36 km · Nut Tree Airport (KVCB) 42 km
Conditions reported at KCCR describe the airfield itself. Weather 13 km away can differ, particularly in terrain or near the coast. For conditions at Port Costa specifically, see the current conditions and forecast above.
Soil conditions, frost risk and crop weather for Port Costa.
About Port Costa, California
Port Costa clings to the southeastern curve of the Carquinez Strait, a place where the Sacramento River surrenders its fresh waters to the salty embrace of San Pablo Bay. It lies 1.4 miles west of Benicia, CA (from Benicia, CA: bearing 261°T), and is situated 9.5 miles west-north-west of Concord. Cliffs, weathered and ochre, rise sharply behind the small collection of buildings, their faces etched with the stories of wind and water. The air here carries a perpetual tang of brine, a constant reminder of the vast Pacific not far beyond. Below, the water itself is a restless, shifting mirror, reflecting the wide California sky, sometimes a steely grey, other times a brilliant, almost painful blue. Gulls wheel and cry overhead, their calls a punctuation to the low thrum of distant freighters navigating the deep channel that runs just offshore. This sliver of land was once a bustling hub, a vital terminus for the railroad and a gateway to the fertile valleys inland. Ships once crowded the waterfront, loading grain and wool, the ceaseless activity a testament to the region's agricultural bounty. Now, a quieter economy prevails, one drawn to the unique character of Port Costa, its historic buildings whispering tales of a bygone era. The old warehouses, some repurposed, others standing as weathered monuments, lend a particular, almost melancholic beauty to the waterfront, their corrugated iron roofs catching the late afternoon sun in a warm, diffused glow. Local businesses cater to those who appreciate the unvarnished charm and the persistent spirit of this place, a spirit as resilient as the sea grass that anchors the steep slopes.
Live animated radar for Port Costa and surroundings — RainViewer.
NOAA GOES-16 GEOCOLOR — live animated loop updated every 10 minutes. Shows cloud cover, storm systems and weather patterns across the continental US.
Source: NOAA/NESDIS GOES-East · Public domain · Auto-updates on page reload
| Location | Port Costa, Contra Costa County, California |
| Coordinates | 38.04631°N, 122.1833°W |
| Timezone | Pacific Time (America/Los_Angeles) |
| ZIP Code(s) | 94569 |
| Area Code | 510 |
| Page generated | September 2026 |
| Weather data | Open-Meteo (open-source), NOAA National Weather Service |
About This Port Costa, California Weather Page
This page provides live weather conditions and forecasts for Port Costa, California, including current conditions, a 24-hour hourly forecast, 7-day outlook, NWS extended text forecast, precipitation radar and NOAA GOES-16 satellite imagery. Aviation weather — live METAR observations and TAF forecasts — is published separately on the pages for the nearest reporting airports, linked from the aviation section above. Additional sections may include tide predictions, wave height, wave direction and sea-surface temperature, a barometric pressure trend, and a solunar-based fishing forecast with a fishing-conditions rating for coastal localities, and soil temperature, crop weather and live USGS river gauge data for agricultural areas near a monitored waterway. All data updates automatically on every page visit.
Location data for Port Costa includes coordinates 38.046310°N, 122.183300°W, situated in Contra Costa County. ZIP code 94569. Telephone area code: 510. Timezone: Pacific Time (America/Los_Angeles).
Weather data is sourced from the NOAA National Weather Service (NWS) and the open-source Open-Meteo API. River and stream data is sourced from the USGS National Water Information System. Tide predictions are sourced from NOAA CO-OPS; marine and solunar data are modeled from Open-Meteo and public sunrise/moon calculations and should be treated as a general guide alongside on-the-water conditions. Radar is provided by RainViewer. Satellite imagery is sourced from NOAA/NESDIS GOES-East and is public domain.
