If you planning to travel to Joshinetsu Kogen National Park, Nagano, Japan, here is your 6-day travel weather forecast to make sure you have all the essentials needed during your stay. Start your day when the sunrises at 9:41 PM. The temperature feels like 24.8 with a humidity level of 73 so dress accordingly. Cloud coverage is 9 percent with visibility at 4.2 percent. Today’s UV index is 0, don’t forget the sunscreen if you need it! Today’s winds are traveling west-northwest at a speed of 8 MPH. At the end of the day don’t miss the sunset at 7:35 AM.