January weather forecast and climate
Bethlehem, NH

January, like December, is a freezing cold winter month in Bethlehem, New Hampshire, with average temperature fluctuating between 9.3°F (-12.6°C) and 22.5°F (-5.3°C).

Temperature

The coldest month is January, with an average high-temperature of 22.5°F (-5.3°C) and an average low-temperature of 9.3°F (-12.6°C).

Humidity

Months with the highest humidity in Bethlehem, New Hampshire, are January and February, with an average relative humidity of 89%.

Rainfall

In January, the rain falls for 7.9 days. Throughout January, 2.36" (60mm) of precipitation is accumulated. Throughout the year, in Bethlehem, there are 164.3 rainfall days, and 29.45" (748mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. In Bethlehem, during January, snow falls for 21.1 days and regularly aggregates up to 12.68" (322mm) of snow. Throughout the year, there are 99.6 snowfall days, and 57.68" (1465mm) of snow is accumulated.

Daylight

The average length of the day in Bethlehem is 9.3h.

Sunshine

In Bethlehem, the average sunshine is 3.1h.

UV index

Months with the lowest UV index are January, February and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health hazard from the exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 1 transform into the following instructions:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the coldest month in Bethlehem?

The coldest month in Bethlehem is January, with an average high-temperature of 22.5°F (-5.3°C) and an average low-temperature of 9.3°F (-12.6°C).

What is the temperature in January in Bethlehem?

In Bethlehem, New Hampshire, in January, the average high-temperature is 22.5°F (-5.3°C), and the average low-temperature is 9.3°F (-12.6°C).

What are the most humid months in Bethlehem?

January and February, with an average relative humidity of 89%, are most humid months in Bethlehem.

What is the average humidity in January in Bethlehem?

In January, the average relative humidity in Bethlehem, New Hampshire, is 89%.

How much does it rain in Bethlehem in January?

In Bethlehem, in January, it is raining for 7.9 days, with typically 2.36" (60mm) of accumulated precipitation.

How many days does it snow in January in Bethlehem?

In Bethlehem, during January, snow falls for 21.1 days and regularly aggregates up to 12.68" (322mm) of snow.

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

In January, the average length of the day is 9.3h.

How many hours of sunshine does Bethlehem have in January?

The average sunshine in January in Bethlehem is 3.1h.

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

Months with the lowest UV index are January, February and December, with an average maximum UV index of 1.

What is the UV index reading in January in Bethlehem?

The average daily maximum UV index in January in Bethlehem, New Hampshire, is 1. A UV Index of 2, and less, symbolizes a low health risk from unsafe exposure to the Sun's UV rays.
Average temperature in January - Bethlehem, NH
  • Average high temperature in January: -5.3°C

The warmest month (with the highest average high temperature) is July (24.6°C).
The month with the lowest average high temperature is January (-5.3°C).

  • Average low temperature in January: -12.6°C

The month with the highest average low temperature is July (12.3°C).
The coldest month (with the lowest average low temperature) is January (-12.6°C).

Average pressure in January - Bethlehem, NH
  • Average pressure in January: 1016.1mbar

The month with the highest atmospheric pressure is November (1018.1mbar).
The month with the lowest atmospheric pressure is June (1012.8mbar).

Average wind speed in January - Bethlehem, NH
  • Average wind speed in January: 9.8km/h

The windiest month (with the highest average wind speed) is April (10.5km/h).
The calmest month (with the lowest average wind speed) is August (7.3km/h).

Average humidity in January - Bethlehem, NH
  • Average humidity in January: 89%

Months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is May (76%).

Average rainfall in January - Bethlehem, NH
  • Average rainfall in January: 60mm

The wettest month (with the highest rainfall) is October (74mm).
The driest month (with the least rainfall) is September (53mm).

Average rainfall days in January - Bethlehem, NH
  • Average rainfall days in January: 7.9 days

The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is February (6.7 days).

Average snowfall in January - Bethlehem, NH
  • Average snowfall in January: 322mm

The month with the highest snowfall is February (345mm).
Months with the least snowfall are June, July, August and September (0mm).

Average snowfall days in January - Bethlehem, NH
  • Average snowfall days in January: 21.1 days

The month with the highest number of snowfall days is January (21.1 days).
Months with the least snowfall days are June, July, August and September (0 days).

Average daylight in January / Average sunshine in January - Bethlehem, NH
  • Average daylight in January: 9.3h

The month with the longest days is June (Average daylight: 15.5h).
The month with the shortest days is December (Average daylight: 8.9h).

  • Average sunshine in January: 3.1h

The month with the most sunshine is August (Average sunshine: 9.9h).
The month with the least sunshine is February (Average sunshine: 3h).

Average sunshine days in January - Bethlehem, NH
  • Average sunshine days in January: 8.2 days

The month with the most sunshine days is September (14.5 days).
The month with the least sunshine days is February (5.9 days).

Average UV index in January - Bethlehem, NH
  • Average UV index in January: 1

Months with the highest UV index are June and July (UV index 5).
Months with the lowest UV index are January, February and December (UV index 1).

Average cloud cover in January - Bethlehem, NH
  • Average cloud cover in January: 69

The month with the most cloud cover is February (Cloud cover 71).
Months with the least cloud cover are July and August (Cloud cover 39).

Average visibility in January - Bethlehem, NH
  • Average visibility in January: 6km

Months with the highest visibility are April, May, June, July, August, October and November (8km).
Months with the lowest visibility are January and February (6km).