there is very less chance to get snowfall in the late week of March and April. So do not expect snow fall at that time. You can get penalty of snow in Manali specially rohtang pass. You can book Cab from Delhi for Shimla and Manali.
The possibility of experiencing snow in Manali in April can vary from year to year. While it is less likely to have heavy snowfall during this time, there might still be some remnants of snow at higher altitudes or in shaded areas. It’s best to check weather forecasts closer to your travel dates for accurate information on snow conditions.