January weather forecast
Manchester, NH

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The colorful buildings in the city of Manchester, New Hampshire, right next to scenic trees on the seashore, a beautiful glass image in the river below
The colorful buildings in the city of Manchester, New Hampshire, right next to scenic trees on the seashore, a beautiful glass image in the river below

Weather in January

Manchester, New Hampshire, sees the new year in with some of its coldest weather. Though the crisp air features far less snowfall than December, at 2.4" (61mm) of snow. This decrease in snowfall is balanced by a relatively high percentage of cloud cover, making for several overcast days. The sharp winds characteristic of this month decrease slightly toward the end, setting the stage for February's weather. Combined with this, the shorter daylight hours contribute to the overall feeling of a long, cold winter.

Temperature

Manchester reaches its lowest average temperatures in January, measuring 30.6°F (-0.8°C) at the peak and 18°F (-7.8°C) at the lowest.

Humidity

In January, the average relative humidity in Manchester is 80%.

Rainfall

January is the month with the least rainfall in Manchester. Rain falls for 4.1 days and accumulates 0.75" (19mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. In Manchester, in January, during 7.1 snowfall days, 2.4" (61mm) of snow is typically accumulated. Throughout the year, in Manchester, there are 26.1 snowfall days, and 11.54" (293mm) of snow is accumulated.

Daylight

In Manchester, the average length of the day in January is 9h and 26min.
On the first day of January in Manchester, sunrise is at 7:17 am and sunset at 4:21 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 4:56 pm EST.

Sunshine

In January, the average sunshine is 5.1h.

UV index

The months with the lowest UV index in Manchester are January through March, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 2 in January transforms into the following instructions:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
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Frequently asked questions

What is the coldest month in Manchester?

Temperature readings in Manchester reach their annual highs in January, averaging 30.6°F (-0.8°C) and a minimum average of 18°F (-7.8°C).

How cold is it in Manchester in January?

January temperatures in Manchester, New Hampshire, vary between a high-temperature of 30.6°F (-0.8°C) and a low-temperature of 18°F (-7.8°C).

What is the average humidity in January in Manchester?

In January, the average relative humidity is 80%.

What is the driest month in Manchester?

The month with the least rainfall is January, when the rain falls for 4.1 days and typically collects 0.75" (19mm) of precipitation.

How much does it rain in Manchester in January?

In Manchester, during January, the rain falls for 4.1 days and regularly aggregates up to 0.75" (19mm) of precipitation.

How many days does it snow in January in Manchester?

In Manchester, New Hampshire, in January, snow falls for 7.1 days, with typically accumulated 2.4" (61mm) of snow.

What is the average length of the day in January in Manchester?

In Manchester, the average day length in January is 9h and 26min.

When are sunrise and sunset in January in Manchester?

In January, on the first day of the month, sunrise is at 7:17 am and sunset at 4:21 pm. On the last day of the month, in Manchester, sunrise is at 7:01 am and sunset at 4:56 pm EST.

How many hours of sunshine does Manchester have in January?

In Manchester, New Hampshire, the average sunshine duration in January is 5.1h.

What is the month with the lowest UV index in Manchester?

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Manchester, New Hampshire.

What is the UV index intensity in January in Manchester?

In Manchester, New Hampshire, the average daily maximum UV index in January is 2. A UV Index reading of 2, and below, represents a low health threat from unsafe exposure to Sun's UV rays.
Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND
Dec
January
Feb
Average high temperature
36.3°F 2.4°C
30.6°F -0.8°C
33.3°F 0.7°C
Average low temperature
25.3°F -3.7°C
18°F -7.8°C
18.9°F -7.3°C
Average pressure
30.03" 763mmHg
30.01" 762mmHg
29.99" 762mmHg
Average wind speed
7.8mph 12.6km/h
8.3mph 13.4km/h
8.1mph 13km/h
Average max. wind speed
8.4mph 13.5km/h
8.9mph 14.3km/h
8.7mph 14km/h
Average wind speed gusts
12.8mph 20.6km/h
13.7mph 22km/h
13.2mph 21.2km/h
Average humidity
79%
80%
81%
Average rainfall
1.1" 28mm
0.75" 19mm
0.83" 21mm
Average rainfall days
6.3
4.1
4.5
Average snowfall
2.99" 76mm
2.4" 61mm
2.32" 59mm
Average snowfall days
4
7.1
5.9
Average daylight
9h 1min
9h 2min
10h 4min
Average sunshine
4h 5min
5h 1min
4h 4min
Average sunshine days
21.3
21.3
18.9
Average UV index
2
2
2
Average cloud cover
47%
45%
49%
Average visibility
6mi 9.7km
6mi 9.7km
5mi 8km

Average temperature in January
Manchester, NH

Average temperature in January - Manchester, NH
  • Average high temperature in January: 30.6°F

The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (30.6°F).

  • Average low temperature in January: 18°F

The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is January (18°F).

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Average pressure in January
Manchester, NH

Average pressure in January - Manchester, NH
  • Average pressure in January: 30.01"Hg

The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in January
Manchester, NH

Average wind speed in January - Manchester, NH
  • Average wind speed in January: 8.3mph

The windiest month (with the highest average wind speed) is January (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).

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Average humidity in January
Manchester, NH

Average humidity in January - Manchester, NH
  • Average humidity in January: 80%

The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is April (72%).

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Average rainfall in January
Manchester, NH

Average rainfall in January - Manchester, NH
  • Average rainfall in January: 0.75"

The wettest month (with the highest rainfall) is October (1.38").
The driest month (with the least rainfall) is January (0.75").

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Average rainfall days in January
Manchester, NH

Average rainfall days in January - Manchester, NH
  • Average rainfall days in January: 4.1 days

The month with the highest number of rainy days is June (12.1 days).
The month with the least rainy days is January (4.1 days).

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Average snowfall in January
Manchester, NH

Average snowfall in January - Manchester, NH
  • Average snowfall in January: 2.4"

The month with the highest snowfall is December (2.99").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in January
Manchester, NH

Average snowfall days in January - Manchester, NH
  • Average snowfall days in January: 7.1 days

The month with the highest number of snowfall days is January (7.1 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in January /
Average sunshine in January
Manchester, NH

Average daylight in January / Average sunshine in January - Manchester, NH
  • Average daylight in January: 9h and 2min

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in January: 5h and 1min

The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

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Average sunshine days in January
Manchester, NH

Average sunshine days in January - Manchester, NH
  • Average sunshine days in January: 21.3 days

The months with the most sunshine days are January and December (21.3 days).
The month with the least sunshine days is June (16.7 days).

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Average UV index in January
Manchester, NH

Average UV index in January - Manchester, NH
  • Average UV index in January: 2

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

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Average cloud cover in January
Manchester, NH

Average cloud cover in January - Manchester, NH
  • Average cloud cover in January: 45

The month with the most cloud cover is March (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 33).

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Average visibility in January
Manchester, NH

Average visibility in January - Manchester, NH
  • Average visibility in January: 6mi

The months with the highest visibility are January, April, November and December (6mi).
The months with the lowest visibility are February, March, May, June, July, August, September and October (5mi).

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Manchester, New Hampshire, USA

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