What’s the weather at Obersaxen Mundaun today? The current Obersaxen Mundaun weather is: Rain, 18 C° base and 13 C° Summit, 4 km/h wind. Scroll down to Hour by Hour for an hourly Obersaxen Mundaun weather forecast breakdown for a detailed Obersaxen Mundaun weather and snow forecast for the next seven days.