San Jose, CA weather — every major forecast in one place

Weather Index is the only weather app that compares forecasts for San Jose, California from every major weather source side by side. Instead of trusting one forecast, you can see what AccuWeather, The Weather Channel, Apple Weather, Google Weather, Microsoft Weather, the National Weather Service, OpenWeatherMap, Tomorrow.io, Pirate Weather, WeatherAPI, Visual Crossing, and Weatherbit each predict — alongside the global numerical weather models meteorologists actually use: ECMWF (European), GFS and HRRR (NOAA), NBM, DWD ICON (Germany), Météo-France, the UK Met Office, MET Norway, JMA (Japan), and the Canadian GEM. More than 25 sources in total.

Every forecaster runs different models with different assumptions, so their predictions disagree — sometimes by 10°F on temperature, often on whether it will rain at all. Seeing all of them together for San Jose reveals where the forecast is confident and where there is real uncertainty, so you can plan around the range instead of gambling on a single source.

Current conditions, hour-by-hour forecasts, 7-day outlooks, live radar, and severe weather alerts for San Jose, CA update continuously.

San Jose, California · 37.3382°, -121.8863°