Temperature
The average summer temperature in the southern foothills is about 30 degree Celsius and the average winter temperature is around 18 degree Celsius. In the middle Himalayan valleys the average summer temperature is around 25 degree Celsius while the winters are really cold. And on the higher region of the middle Himalayas the summer temperature is recorded at around 15 to 18 degree Celsius while the winters are below freezing point. At altitudes above 4880 m it is below freezing point and it is permanently covered with snow. During the winter the snowfall is really heavy while the summers are much more mild and soothing. The Himalayan Alpine climate varies according to the altitude. The more the height the more cooler the temperature gets here.
Precipitation
The rainfall, mainly from the monsoons, decreases from the east to the west. Comparatively, in winter, due to the influence of tropical west wind drift, the northwest areas have more precipitation in the form of rain and snow. But regions such as Ladakh & Zanskar that lie to the North of the main Himalayan range escape the full impact of the monsoon. Humidity is always low in these regions, and receives only a few centimeters of rainfall a year.
Because there is so much variety in the precipitation and temperatures in the Himalayan mountain range I chose one specific area. I found the monthly temperatures and rainfall for the Himalayan region of Northern India.