January weather forecast and climate
Rockport, MA

Weather in January

January, the same as December, is a wintry winter month in Rockport, Massachusetts, with average temperature fluctuating between 34.9°F (1.6°C) and 26.1°F (-3.3°C).

Temperature

With an average high-temperature of 34.9°F (1.6°C) and an average low-temperature of 26.1°F (-3.3°C), January is the coldest month.

Humidity

In January, the average relative humidity in Rockport is 75%.

Rainfall

In Rockport, it is raining for 8.3 days, with typically 2.28" (58mm) of accumulated precipitation. Throughout the year, in Rockport, there are 150.9 rainfall days, and 30.75" (781mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through April, November and December. In Rockport, during January, snow falls for 7.8 days and regularly aggregates up to 1.93" (49mm) of snow. Throughout the year, in Rockport, there are 27.4 snowfall days, and 9.17" (233mm) of snow is accumulated.

Ocean temperature

In January, the average ocean temperature is 41.5°F (5.3°C).
Note: Swimming in 41.5°F (5.3°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

Daylight

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

Sunshine

The average sunshine in Rockport is 5h.

UV index

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 minimal health hazard from unprotected exposure to the Sun's UV rays for the average person.
Note: In January, the average maximum UV index of 2 translate into the following recommendations:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the coldest month in Rockport?

With an average high-temperature of 34.9°F (1.6°C) and an average low-temperature of 26.1°F (-3.3°C), January is the coldest month in Rockport, Massachusetts.

What is the average humidity in January in Rockport?

The average relative humidity in January is 75%.

How much does it rain in Rockport in January?

In Rockport, in January, it is raining for 8.3 days, with typically 2.28" (58mm) of accumulated precipitation.

How many days does it snow in January in Rockport?

In Rockport, in January, snow falls for 7.8 days, with typically accumulated 1.93" (49mm) of snow.

How cold is the water in January in Rockport?

In Rockport, in January, the average water temperature is 41.5°F (5.3°C). Swimming in 41.5°F (5.3°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

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

The average length of the day in January in Rockport is 9.5h.

How long on average sun shines in January in Rockport?

In Rockport, the average sunshine in January is 5h.

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

Months with the lowest UV index in Rockport, Massachusetts, are January through March, November and December, with an average maximum UV index of 2.

How high is the UV index in January in Rockport?

In January, the average daily maximum UV index in Rockport, Massachusetts, is 2. A UV Index value of 2, and less, symbolizes a low health threat from unprotected exposure to the UV radiation.

Average temperature in January
Rockport, MA

Average temperature in January - Rockport, MA
  • Average high temperature in January: 34.9°F

The warmest month (with the highest average high temperature) is August (73°F).
The month with the lowest average high temperature is January (34.9°F).

  • Average low temperature in January: 26.1°F

The month with the highest average low temperature is August (65.5°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).

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Average pressure in January
Rockport, MA

Average pressure in January - Rockport, MA
  • Average pressure in January: 29.99"

The month with the highest atmospheric pressure is November (30.06").
The month with the lowest atmospheric pressure is June (29.92").

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Average wind speed in January
Rockport, MA

Average wind speed in January - Rockport, MA
  • Average wind speed in January: 15.2mph

The windiest month (with the highest average wind speed) is January (15.2mph).
The calmest months (with the lowest average wind speed) are July and August (8.9mph).

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Average humidity in January
Rockport, MA

Average humidity in January - Rockport, MA
  • Average humidity in January: 75%

The month with the highest relative humidity is June (81%).
The month with the lowest relative humidity is November (73%).

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Average rainfall in January
Rockport, MA

Average rainfall in January - Rockport, MA
  • Average rainfall in January: 2.28"

The wettest month (with the highest rainfall) is December (3.23").
The driest month (with the least rainfall) is September (1.73").

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Average rainfall days in January
Rockport, MA

Average rainfall days in January - Rockport, MA
  • Average rainfall days in January: 8.3 days

The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is February (8.2 days).

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Average snowfall in January
Rockport, MA

Average snowfall in January - Rockport, MA
  • Average snowfall in January: 1.93"

The month with the highest snowfall is February (2.6").
Months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in January
Rockport, MA

Average snowfall days in January - Rockport, MA
  • Average snowfall days in January: 7.8 days

The month with the highest number of snowfall days is January (7.8 days).
Months with the least snowfall days are June, July, August, September and October (0 days).

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Average sea temperature in January
Rockport, MA

Average sea temperature in January - Rockport, MA
  • Average sea temperature in January: 41.6°F

The best month for swimming (with the highest average sea temperature) is August (66.4°F).
The coldest month (with the lowest average sea temperature) is March (38.8°F).

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Average daylight in January /
Average sunshine in January
Rockport, MA

Average daylight in January / Average sunshine in January - Rockport, MA
  • 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: 5h

The month with the most sunshine is August (Average sunshine: 10.8h).
Months with the least sunshine are February and December (Average sunshine: 4.8).

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Average sunshine days in January
Rockport, MA

Average sunshine days in January - Rockport, MA
  • Average sunshine days in January: 15.7 days

Months with the most sunshine days are September and November (16.7 days).
The month with the least sunshine days is February (13.1 days).

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Average UV index in January
Rockport, MA

Average UV index in January - Rockport, MA
  • Average UV index in January: 2

Months with the highest UV index are July and August (UV index 6).
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
Rockport, MA

Average cloud cover in January - Rockport, MA
  • Average cloud cover in January: 45

The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 27).

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Average visibility in January
Rockport, MA

Average visibility in January - Rockport, MA
  • Average visibility in January: 6mi

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

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