Weather in Port Costa, California
Live weather conditions. Source: Open-Meteo
Updated May 24, 2026 · 06:25 PM ET · Refreshes every hour
67°F
Clear sky
Feels like 64°F
69%
Humidity
16 mph
Wind Speed
About Weather in Port Costa
Port Costa is located in California (coordinates: 38.044543°N, 122.184942°W). Weather data is sourced from Open-Meteo, a free and open meteorological API using data from national weather services including NOAA.
All temperatures are displayed in Fahrenheit. Wind speed is in miles per hour.