Temperature in New Hampshire in January

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

New Hampshire, the United States of America, a region in the United States of America, experiences very low average maximum daytime temperatures in January, ranging from -4°C (25°F) in Waterville Valley to 2°C (36°F) in Salem. Nighttime temperatures generally drop to -8°C (18°F) in Salem and -14°C (7°F) in Waterville Valley. January falls during the winter season. On average, it is one of the coldest months of the year.

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

To get a sense of January's typical temperatures in the key spots of New Hampshire, explore the map below. Click on a point for an in-depth look.

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 January

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 January: blue is cold, red is hot.

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

New Hampshire temperatures in January: frequently asked questions

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

Average daytime highs in New Hampshire, the United States of America during January reach about 1°C (34°F) in Portsmouth.

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

Average overnight lows in New Hampshire, the United States of America during January sit near -8°C (18°F) in Portsmouth.

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

From a thorough analysis of our records, Salem clearly dominates in terms of high temperatures. The city witnesses daytime temperatures hovering around 2°C (36°F), and evenings that remain near -8°C (18°F).

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

The coldest city in January in New Hampshire, the United States of America is Waterville Valley when we check our database. The maximum daytime temperatures are around -4°C (25°F) and minimum nighttime temperatures fall around -14°C (7°F).

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

Portsmouth enjoys a balanced 162 hours of sunlight. This makes it neither too overcast nor too sunny.

Interested in more climate information?

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

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