Weather for Seagrove Park, CA - Seagrove Park, CA Weather, Current Weather in Seagrove Park, CA. Local weather report for Seagrove Park, CA, Local Seagrove Park, CA weather. Forecast for Seagrove Park, California, Seagrove Park, CA weather forecast. Find your local Seagrove Park weather forecast. Seagrove Park, CA weather conditions.