January weather forecast and climate
Jaffrey, NH

Weather in January

January, the same as December, in Jaffrey, New Hampshire, is a freezing cold winter month, with average temperature varying between 16.2°F (-8.8°C) and 28°F (-2.2°C).

Temperature

With an average high-temperature of 28°F (-2.2°C) and an average low-temperature of 16.2°F (-8.8°C), January is the coldest month.

Humidity

In January, the average relative humidity is 83%.

Rainfall

In Jaffrey, during January, the rain falls for 7.3 days and regularly aggregates up to 2.4" (61mm) of precipitation. In Jaffrey, during the entire year, the rain falls for 149.5 days and collects up to 32.13" (816mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Jaffrey. In Jaffrey, New Hampshire, during January, snow falls for 11.1 days and regularly aggregates up to 7.76" (197mm) of snow. Throughout the year, in Jaffrey, there are 54.2 snowfall days, and 38.27" (972mm) of snow is accumulated.

Daylight

In January, the average length of the day in Jaffrey is 9.5h.

Sunshine

In Jaffrey, the average sunshine is 4.6h.

UV index

Months with the lowest UV index are January through March, October through December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to the UV radiation for ordinary individuals.
Note: The daily maximum UV index of 2 in January interpret into the following advice:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the coldest month in Jaffrey?

With an average high-temperature of 28°F (-2.2°C) and an average low-temperature of 16.2°F (-8.8°C), January is the coldest month in Jaffrey, New Hampshire.

What is the temperature in January in Jaffrey?

The average high-temperature, in January, in Jaffrey, New Hampshire, is 28°F (-2.2°C), while the average low-temperature is 16.2°F (-8.8°C).

What is the average humidity in January in Jaffrey?

In Jaffrey, New Hampshire, the average relative humidity in January is 83%.

How much does it rain in Jaffrey in January?

In Jaffrey, in January, it is raining for 7.3 days, with typically 2.4" (61mm) of accumulated precipitation.

How many days does it snow in January in Jaffrey?

In Jaffrey, during January, snow falls for 11.1 days and regularly aggregates up to 7.76" (197mm) of snow.

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

In January, the average length of the day in Jaffrey, New Hampshire, is 9.5h.

How many hours of sunshine does Jaffrey have in January?

In January, the average sunshine in Jaffrey, New Hampshire, is 4.6h.

What are the months with the lowest UV index in Jaffrey?

January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index.

What is the UV index reading in January in Jaffrey?

The average daily maximum UV index in January in Jaffrey is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to the UV radiation.

Average temperature in January
Jaffrey, NH

Average temperature in January - Jaffrey, NH
  • Average high temperature in January: 28°F

The warmest month (with the highest average high temperature) is July (79.5°F).
The month with the lowest average high temperature is January (28°F).

  • Average low temperature in January: 16.2°F

The month with the highest average low temperature is July (59.5°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).

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Average pressure in January
Jaffrey, NH

Average pressure in January - Jaffrey, NH
  • Average pressure in January: 30.01"

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

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Average wind speed in January
Jaffrey, NH

Average wind speed in January - Jaffrey, NH
  • Average wind speed in January: 8.4mph

The windiest month (with the highest average wind speed) is January (8.4mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

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Average humidity in January
Jaffrey, NH

Average humidity in January - Jaffrey, NH
  • Average humidity in January: 83%

The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is April (74%).

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Average rainfall in January
Jaffrey, NH

Average rainfall in January - Jaffrey, NH
  • Average rainfall in January: 2.4"

The wettest month (with the highest rainfall) is October (3.35").
The driest month (with the least rainfall) is September (2.17").

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Average rainfall days in January
Jaffrey, NH

Average rainfall days in January - Jaffrey, NH
  • Average rainfall days in January: 7.3 days

Months with the highest number of rainy days are May, June and August (15.8 days).
The month with the least rainy days is February (7.2 days).

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Average snowfall in January
Jaffrey, NH

Average snowfall in January - Jaffrey, NH
  • Average snowfall in January: 7.76"

The month with the highest snowfall is February (9.41").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in January
Jaffrey, NH

Average snowfall days in January - Jaffrey, NH
  • Average snowfall days in January: 11.1 days

The month with the highest number of snowfall days is February (12.5 days).
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
Jaffrey, NH

Average daylight in January / Average sunshine in January - Jaffrey, NH
  • Average daylight in January: 9.5h

The month with the longest days is June (Average daylight: 15.3h).
The month with the shortest days is December (Average daylight: 9.1h).

  • Average sunshine in January: 4.6h

The month with the most sunshine is August (Average sunshine: 9.9h).
The month with the least sunshine is February (Average sunshine: 4.1h).

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Average sunshine days in January
Jaffrey, NH

Average sunshine days in January - Jaffrey, NH
  • Average sunshine days in January: 15.9 days

The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is March (11.7 days).

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Average UV index in January
Jaffrey, NH

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

The month with the highest UV index is July (UV index 6).
Months with the lowest UV index are January, February, March, October, November and December (UV index 2).

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Average cloud cover in January
Jaffrey, NH

Average cloud cover in January - Jaffrey, NH
  • Average cloud cover in January: 50

Months with the most cloud cover are February and March (Cloud cover 54).
Months with the least cloud cover are July and August (Cloud cover 38).

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Average visibility in January
Jaffrey, NH

Average visibility in January - Jaffrey, NH
  • Average visibility in January: 5mi

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

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