Typically, it is not safe to use any kind of generator during wet weather. So you can’t use it during both rainy and snowy days. However, the weather won’t be a problem if you have a special cover for your generator. Then you can shelter it from getting wet, but you have to be very careful. Wet conditions can cause some kind of explosion or electrocution. Also, remember that in case of any natural disaster, it is not safe to use the generator very close to your house.