Regarding the Kathmandu City Weather, there is no need to worry about the extremities of the weather and climate. Kathmandu is one of those cities in Nepal that has a moderate climate. Neither, the summer is too hot, nor the winter is too cold. During the winter season, the temperature can go high to 21 degrees Celsius and can go low to 5 degrees Celsius. Kathmandu doesn’t receive snowfall often. However, the hills around the Kathmandu Valley may receive snowfall during the peak winter time.