Northumberland, NH has a humid continental climate with warm summers and cold winters. The average high temperature during the summer months is around 73°F (23°C). Meanwhile, during the winter months, the average low temperatures can dip down to around 8°F (-13°C). Precipitation throughout the year averages out to around 45 inches (114 cm), most of which falls in the form of rain or snow. Snowfall during the winter season is common in Northumberland, and it typically receives an average of 62 inches (157 cm) each year.
Northumberland, New Hampshire gets 39 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Northumberland averages 77 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 198 sunny days per year in Northumberland. The US average is 205 sunny days.
Northumberland gets some kind of precipitation, on average, 150 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.
Weather Highlights
Summer High: the July high is around 79 degrees
Winter Low: the January low is 1
Rain: averages 39 inches of rain a year
Snow: averages 77 inches of snow a year