There are many good places in Nagano. For a foreigner, it’s difficult to decide where to do. We recommend nice places in Nagano, especially in March, in the winter season. This article resolves your problem with location for traveling in Nagano.
I’ll talk about what is the weather like Japan and Nagano in February in 2020. Nagano has many mountains and is around much nature, so the temperature is lower than in Tokyo. However, this was a warm winter, so I think that this coming spring may come earlier than last year.