January weather forecast
Rockland, ME

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A US flag flying outside a lighthouse on the water in Rockland, Maine
A US flag flying outside a lighthouse on the water in Rockland, Maine

Weather in January

January in Rockland, Maine sees the coldest temperatures of the year with the monthly average high and low temperatures ranging from 22.1°F (-5.5°C) to 31.8°F (-0.1°C). The month also brings a considerable amount of cloud cover, resulting in decreased sunlight. Weather conditions may be challenging due to a high relative humidity of 78%. Snowfall is a typical occurrence, making it necessary for residents to prepare for cold and slippery conditions. Despite the sometimes harsh conditions, January carries a certain charm, with the snowy landscape offering a beautiful backdrop for winter sports and activities.

Temperature

January is the coldest month of the year, registering average temperatures as high as 31.8°F (-0.1°C) and as low as 22.1°F (-5.5°C).

Humidity

In January, the average relative humidity in Rockland is 78%.

Rainfall

In Rockland, in January, it is raining for 7.9 days, with typically 2.6" (66mm) of accumulated precipitation. In Rockland, during the entire year, the rain falls for 144.8 days and collects up to 30.63" (778mm) of precipitation.

Snowfall

Months with snowfall are January through April, November and December. January is the month with the most snowfall. Snow falls for 8.5 days and accumulates 2.83" (72mm) of snow.

Ocean temperature

In January, the average ocean temperature in Rockland is 41.2°F (5.1°C).
Note: Swimming in 41.2°F (5.1°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

Daylight

The average length of the day in January in Rockland is 9h and 20min.
On the first day of January, sunrise is at 7:11 am and sunset at 4:08 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 4:44 pm EST.

Sunshine

The average sunshine in January is 4.9h.

UV index

The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for the average person.
Note: A maximum UV index of 2 in January translates into the following recommendations:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. Minimize direct exposure to the Sun during midday when its radiation is at its peak. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
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Frequently asked questions

What is the coldest month in Rockland?

January proves to be the coldest month, recording an average maximum temperature of 31.8°F (-0.1°C) and a minimum temperature of 22.1°F (-5.5°C).

How cold is it in Rockland in January?

In January, in Rockland, the average high-temperature is 31.8°F (-0.1°C), and the average low-temperature is 22.1°F (-5.5°C).

What is the average humidity in January in Rockland?

In Rockland, Maine, the average relative humidity in January is 78%.

How many days does it rain in January in Rockland?

In Rockland, during January, the rain falls for 7.9 days and regularly aggregates up to 2.6" (66mm) of precipitation.

What is the snowiest month in Rockland?

January is the month with the most snowfall. Snow falls for 8.5 days and accumulates 2.83" (72mm) of snow.

How many days does it snow in January in Rockland?

In Rockland, Maine, during January, snow falls for 8.5 days and regularly aggregates up to 2.83" (72mm) of snow.

What is the water temperature in January in Rockland?

In Rockland, Maine, in January, the average water temperature is 41.2°F (5.1°C). At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

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

The average day length in January in Rockland is 9h and 20min.

When are sunrise and sunset in January in Rockland?

On the first day of January, sunrise is at 7:11 am and sunset at 4:08 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 4:44 pm EST.

How many hours of sunshine does Rockland have in January?

The average sunshine duration in January is 4.9h.

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

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

What is the UV index intensity in January in Rockland?

In January, the average daily maximum UV index in Rockland, Maine, is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to 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
Rockland, ME

Average temperature in January - Rockland, ME
  • Average high temperature in January: 31.8°F

The warmest month (with the highest average high temperature) is August (68.7°F).
The month with the lowest average high temperature is January (31.8°F).

  • Average low temperature in January: 22.1°F

The month with the highest average low temperature is August (60.6°F).
The coldest month (with the lowest average low temperature) is January (22.1°F).

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Average pressure in January
Rockland, ME

Average pressure in January - Rockland, 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).

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Average wind speed in January
Rockland, ME

Average wind speed in January - Rockland, ME
  • Average wind speed in January: 14.9mph

The windiest month (with the highest average wind speed) is January (14.9mph).
The calmest months (with the lowest average wind speed) are July and August (8.2mph).

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Average humidity in January
Rockland, ME

Average humidity in January - Rockland, ME
  • Average humidity in January: 78%

The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is November (75%).

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Average rainfall in January
Rockland, ME

Average rainfall in January - Rockland, ME
  • Average rainfall in January: 2.6"

The wettest month (with the highest rainfall) is December (3.35").
The driest month (with the least rainfall) is September (1.81").

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Average rainfall days in January
Rockland, ME

Average rainfall days in January - Rockland, ME
  • Average rainfall days in January: 7.9 days

The month with the highest number of rainy days is April (15.8 days).
The month with the least rainy days is January (7.9 days).

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Average snowfall in January
Rockland, ME

Average snowfall in January - Rockland, ME
  • Average snowfall in January: 2.83"

The month with the highest snowfall is January (2.83").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in January
Rockland, ME

Average snowfall days in January - Rockland, ME
  • Average snowfall days in January: 8.5 days

The month with the highest number of snowfall days is January (8.5 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

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Average sea temperature in January
Rockland, ME

Average sea temperature in January - Rockland, ME
  • Average sea temperature in January: 41.2°F

The best month for swimming (with the highest average sea temperature) is August (60.4°F).
The coldest month (with the lowest average sea temperature) is March (37.8°F).

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

Average daylight in January / Average sunshine in January - Rockland, 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: 8h and 54min).

  • Average sunshine in January: 4h and 5min

The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 4h and 30min).

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Average sunshine days in January
Rockland, ME

Average sunshine days in January - Rockland, ME
  • Average sunshine days in January: 14.8 days

The month with the most sunshine days is September (18 days).
The month with the least sunshine days is April (11.5 days).

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Average UV index in January
Rockland, ME

Average UV index in January - Rockland, 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).

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Average cloud cover in January
Rockland, ME

Average cloud cover in January - Rockland, ME
  • Average cloud cover in January: 49

The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 31).

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Average visibility in January
Rockland, ME

Average visibility in January - Rockland, 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).

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Rockland, Maine, USA

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