What’s the weather at Ustroń - Poniwiec today? The current Ustroń - Poniwiec weather is: Rain, 13 C° base and 12 C° Summit, 18 km/h wind. Scroll down to Hour by Hour for an hourly Ustroń - Poniwiec weather forecast breakdown for a detailed Ustroń - Poniwiec weather and snow forecast for the next seven days.