Temperature in New Hampshire in December

Daytime highs, nighttime lows and the warmest cities in New Hampshire, the United States of America this December.

New Hampshire, the United States of America, a region in the United States of America, experiences maximum daytime temperatures in December ranging from -1°C (30°F) in Waterville Valley to 5°C (41°F) in Salem. Nighttime temperatures generally drop to -4°C (25°F) in Salem and -9°C (16°F) in Waterville Valley. During December, winter is in full swing.

What is the temperature of the different cities in New Hampshire, the United States of America in December?

Explore the map below to discover average December temperatures at the top destinations in New Hampshire. For a deeper dive, simply click on any destination dot.

Select a Month

Check the conditions for any month of the year.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

For a detailed overview over the year and the best time to visit New Hampshire, check out our New Hampshire's climate page.

See also: New Hampshire weather by month.

Best Places to Visit in New Hampshire in December

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across New Hampshire.

Conditions Temperatures Precipitation
Avg daytime high -5°C (23°F) cold → 32°C (90°F) hot

Marker color shows the average daytime high temperature in December: blue is cold, red is hot.

See all December weather averages, cities and regions in New Hampshire

New Hampshire temperatures in December: frequently asked questions

How hot does it get in New Hampshire, the United States of America in December?

Portsmouth averages a daytime high of 5°C (41°F) in December, which is low for New Hampshire, the United States of America.

How cold does it get at night in New Hampshire, the United States of America in December?

After dark, Portsmouth cools to about -4°C (25°F) on an average December night.

What is the warmest city in December in New Hampshire, the United States of America?

Salem tops the warmest city list in our database with average maximum daytime temperatures around 5°C (41°F) and a minimum nighttime temperature of around -4°C (25°F).

What is the coldest city in December in New Hampshire, the United States of America?

For the month of December, Waterville Valley is the most temperate city in New Hampshire, the United States of America based on our records. Highs average -1°C (30°F) and nighttime temperatures dip to around -9°C (16°F).

How much sun does New Hampshire, the United States of America get in December?

Most cities enjoy a balanced amount of sunshine, with around 134 hours of sunlight anticipated in Portsmouth. This ensures the days are neither too dim nor excessively sunny.

Interested in more climate information?

We have much more information about the climate in New Hampshire.

Weather and climate has detailed information for every country in the world. Are you going to the United States of America? Get detailed historical weather averages for many cities in the United States of America.

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