Is it advisable to go to Lijiang with my parents who are 74 and 82 years old? Is it rainy on March27

Usually, if they are health, it is ok for them to travel to Lijiang, but better do not go to the snow mountain. There may be altitude sickness. Anyway, you can take your parents to see the doctor to have a whole body check and then follow the doctor's advice. It is dry in March and the temperature varies much from 5~17C between day and night. Prepare some warm clothes.