Weather today weather hourly 14 day forecast yesterday/past weather climate (averages) currently: Webunion city weather forecasts. Partly cloudy, with a low around 57. West wind 6 to 8 mph. Partly sunny, then gradually becoming sunny, with a high near 73. See the daily weather conditions, uv index, moon. Webget the latest hourly weather conditions, precipitation, dew point, humidity, wind and uv index for union city, ca. See the temperature, rain amount and cloud cover for the next. See the sunrise and sunset times, radar. Webget union city, ca current weather report with temperature, feels like, wind, humidity, pressure, uv and more from theweathernetwork. com. Webunion city, ca temperature trend for the next 14 days. Find daytime highs and nighttime lows from theweathernetwork. com. Webget the latest hourly weather forecast for union city, ca, including temperature, precipitation, wind, air quality, and uv index. See the sunny and cloudy conditions for. Msn weather tracks it all, from precipitation predictions to severe weather warnings, air quality updates, and even.