January weather forecast
Newcastle, ME

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Weather in January

January, like December, is a freezing cold winter month in Newcastle, Maine, with an average temperature ranging between min 18.9°F (-7.3°C) and max 29.8°F (-1.2°C).

Temperature

January stands out as Newcastle's coldest month, with an average high-temperature of 29.8°F (-1.2°C) and a low-temperature of 18.9°F (-7.3°C).

Humidity

The average relative humidity in January is 80%.

Rainfall

In January, the rain falls for 7.5 days. Throughout January, 2.44" (62mm) of precipitation is accumulated. Throughout the year, there are 144.1 rainfall days, and 29.29" (744mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through April, October through December. January is the month with the most snowfall in Newcastle. Snow falls for 9.3 days and accumulates 4.37" (111mm) of snow.

Daylight

In January, the average length of the day is 9h and 20min.
On the first day of January, sunrise is at 7:12 am and sunset at 4:10 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 4:46 pm EST.

Sunshine

The average sunshine in January is 5h.

UV index

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: In January, a daily UV index of 2 turns into the following recommendations:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. During bright days, sunglasses that offer UVA and UVB defense are recommended. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.

Frequently asked questions

What is the coldest month?

Newcastle's coldest weather arrives in January, when temperatures average a high of 29.8°F (-1.2°C) and a low of 18.9°F (-7.3°C).

How cold is it in January?

In January, in Newcastle, the average high-temperature is 29.8°F (-1.2°C), and the average low-temperature is 18.9°F (-7.3°C).

What is the average humidity in January?

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

How much does it rain in January?

In Newcastle, Maine, during January, the rain falls for 7.5 days and regularly aggregates up to 2.44" (62mm) of precipitation.

When does it snow the most in Newcastle?

January is the month with the most snowfall in Newcastle. Snow falls for 9.3 days and accumulates 4.37" (111mm) of snow.

How much does it snow in January?

In Newcastle, in January, during 9.3 snowfall days, 4.37" (111mm) of snow is typically accumulated.

What is the average length of the day in January?

In Newcastle, the average day length in January is 9h and 20min.

When is the sunrise / sunset in January?

On the first day of January, sunrise is at 7:12 am and sunset at 4:10 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 4:46 pm EST.

How long on average sun shines in January?

The average sunshine duration in January is 5h.

What is the month with the lowest UV index?

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

What is the UV index reading in January?

In Newcastle, the average daily maximum UV index in January is 2. A UV Index reading of 2, and below, represents a low health threat from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Newcastle, ME

Average temperature in January - Newcastle, ME
  • Average high temperature in January: 29.8°F

The warmest month (with the highest average high temperature) is August (72.7°F).
The month with the lowest average high temperature is January (29.8°F).

  • Average low temperature in January: 18.9°F

The month with the highest average low temperature is July (59.2°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).

Average pressure in January
Newcastle, ME

Average pressure in January - Newcastle, ME
  • Average pressure in January: 29.96"Hg

The month with the highest atmospheric pressure is September (30.04"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in January
Newcastle, ME

Average wind speed in January - Newcastle, ME
  • Average wind speed in January: 11.6mph

The windiest month (with the highest average wind speed) is January (11.6mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).

Average humidity in January
Newcastle, ME

Average humidity in January - Newcastle, ME
  • Average humidity in January: 80%

The months with the highest relative humidity are June and July (83%).
The month with the lowest relative humidity is November (76%).

Average rainfall in January
Newcastle, ME

Average rainfall in January - Newcastle, ME
  • Average rainfall in January: 2.44"

The wettest month (with the highest rainfall) is December (3.27").
The driest month (with the least rainfall) is July (1.57").

Average rainfall days in January
Newcastle, ME

Average rainfall days in January - Newcastle, ME
  • Average rainfall days in January: 7.5 days

The month with the highest number of rainy days is May (15.5 days).
The month with the least rainy days is January (7.5 days).

Average snowfall in January
Newcastle, ME

Average snowfall in January - Newcastle, ME
  • Average snowfall in January: 4.37"

The month with the highest snowfall is January (4.37").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in January
Newcastle, ME

Average snowfall days in January - Newcastle, ME
  • Average snowfall days in January: 9.3 days

The month with the highest number of snowfall days is January (9.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in January /
Average sunshine in January
Newcastle, ME

Average daylight in January / Average sunshine in January - Newcastle, ME
  • Average daylight in January: 9h and 2min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in January: 5h and 0min

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

Average sunshine days in January
Newcastle, ME

Average sunshine days in January - Newcastle, ME
  • Average sunshine days in January: 15.9 days

The month with the most sunshine days is September (18.3 days).
The month with the least sunshine days is April (11.4 days).

Average UV index in January
Newcastle, ME

Average UV index in January - Newcastle, ME
  • Average UV index in January: 2

The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

Average cloud cover in January
Newcastle, ME

Average cloud cover in January - Newcastle, ME
  • Average cloud cover in January: 47

The months with the most cloud cover are February, March, April and December (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 32).

Average visibility in January
Newcastle, ME

Average visibility in January - Newcastle, ME
  • Average visibility in January: 6mi

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

Newcastle, Maine, USA

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