Based on weather … January is the snowiest month in Belknap County with 19.0 inches of snow, and 6 months of the year have significant snowfall. Yup, almost half! The moving average line for the 33 years and 11 years are both showing decreasing temperatures. Select a destination to see more weather parameters. Climate can mean the average weather for a particular region and time period taken over 30 years. 45.59 inches: How Many Rainy Days a year are there in New Hampshire? When we took the average annual temperature of the ten most populous cities in each state and weighed them against each other, we found that the average annual temperature in New Hampshire is WARMER THAN—or within FIVE degrees of—a whopping 24 states! January. The amount of rain/snow in January is normal with an average of 68mm (2.7in). Get the latest coronavirus (COVID-19) updates for the USA with current travel advice, statistics and online resources.. Below are average maximum temperatures at popular destinations in New Hampshire in January. January is usually the coldest month of the year in New Hampshire as the temperatures are in a race towards the bottom. July is the hottest month for Gilford with an average high temperature of 80.7°, which ranks it as cooler than most places in New Hampshire. There are few days during the summer when the humidity becomes unpleasant. The average minimum temperature (usually the minimum temperature is noted during the night) in Nashua in January is -12.0°C (10.4°F). Even Pennsylvania! Climate is the average of weather over time. Average Weather during January in Nashua (New Hampshire), United States of America. New Hampshire weather in January 2021. Annual Weather Averages in Knapp State Airport. The amount of rain in January is high with an average of 91mm (3.6in). What's The Average High Temp in New Hampshire? The lowest daily average high temperature is 31°F on January 15 . Average Weather in January in Concord New Hampshire, United States Daily high temperatures are around 32°F, rarely falling below 18°F or exceeding 45°F . 57.3 °F: What's the Average Low in New Hampshire? This month is known as a chilly month. What is the temperature in January … With an average high-temperature of 29.3°F (-1.5°C) and an average low-temperature of 8.8°F (-12.9°C), January is the coldest month in Hanover, New Hampshire. Knapp State Airport is 45 miles from North Woodstock, so the actual climate in North Woodstock can vary a bit. The average low temperatures are in the frigid -4°F (-20°C) to 15°F (-9.4°C), while the average high temperatures are in the 14°F (-10°C) to 34°F (1.1°C) zone. The average minimum temperature (usually the minimum temperature is noted during the night) in Seabrook in January is -5.0°C (23°F). The bottom may hit -25°F (-31.7°C) or even lower in January. 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