What’s the weather at Spiazzi di Gromo today? The current Spiazzi di Gromo weather is: Cloudy, 9 C° base and 1 C° Summit, 6 km/h wind. Scroll down to Hour by Hour for an hourly Spiazzi di Gromo weather forecast breakdown for a detailed Spiazzi di Gromo weather and snow forecast for the next seven days.