The weather and temperature during the differ as per the seasons.
During spring season, the weather is not hot neither cold. It is mild and moderate. The average temperature during the day is 5 degree Celsius and the night time is -7 degree Celsius. The wind speed around this time is about 4 kph. And in today you will have a good sunshine for about 7 hours per day.
Likewise, during summer or monsoon season, the weather is potentially very hot but not that much on the trekking trail. The average day time temperature in the trails is 20-25 degree Celsius and the night time temperature is -5 degree Celsius. You will experience an occasional rain as well since it is monsoon season but nothing like in Kathmandu or anywhere in the lower heights. Therefore, if you plan to visit Nepal during these times, we would recommend you to bring ponchos, waterproof jackets and shoes and down jackets to keep yourself warm. The wind speed will be 8 kph and the sunshine hour is about 4 hours per day.
Furthermore, during autumn season, the weather is moderate. And the average day time temperature will be 12 to 20 degrees Celsius and the average nighttime temperature will be 3 to 7 degree Celsius. The wind speed is 4 kph and the sunshine hour is about 7 hours per day.
And lastly, during winter season, the temperature can be chill to extreme cold. The average daytime temperature is 5-8 degree Celsius and the average night time temperature is negative 7 to 20 degree Celsius. The trail is snowy so you have to careful while walking. Also, the wind speed during time is around 14 kph and the sunshine hours is about 7 hours per day. The trail will be quite and you can have glorious views of the mountains. But really has to be careful about the trekking equipment’s as well as proper clothing.