January weather forecast
Salem, MA

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The gray Witch House located in Salem Town, Massachusetts
The gray Witch House located in Salem Town, Massachusetts

Weather in January

January is the kickoff of Salem's winter season with low average temperatures ranging from 18°F (-7.8°C) to 36°F (2.2°C). While rare, significant snowfall can occur, blanketing the city with a layers of ice and snow. The daylight is short, fading rapidly in the late afternoon. Despite the chill, the winter atmosphere often brings a unique beauty to the city. With 11 rainy days on average and the sea temperature around 41°F (5°C), January is considered to be the harshest month for outdoor activities.

Temperature

January is Salem's coldest month, registering average high temperatures of 35.6°F (2°C) and lows of 17.6°F (-8°C).

Rainfall

In Salem, in January, during 11 rainfall days, 3.66" (93mm) of precipitation is typically accumulated. Throughout the year, there are 124 rainfall days, and 43.03" (1093mm) of precipitation is accumulated.

Ocean temperature

In Salem, in January, the average water temperature is 41°F (5°C).
Note: Engaging in a swim in 41°F (5°C) can threaten life. Brief exposure to 55.4°F (13°C) waters is uneasy, and submersion below 50°F (10°C) can lead to cold shock and disrupted breathing patterns, varying by individual.

Daylight

In Salem, Massachusetts, the average length of the day in January is 9h and 29min.
On the first day of the month, sunrise is at 7:13 am and sunset at 4:20 pm. On the last day of January, in Salem, sunrise is at 6:58 am and sunset at 4:55 pm EST.

Sunshine

January, November and December, with an average of 5h of sunshine, are months with the least sunshine.

UV index

January and December, with an average maximum UV index of 1, are months with the lowest UV index in Salem. A UV Index estimate of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In January, the maximum UV index of 1 translates into these guidelines:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.

Frequently asked questions

What is the coldest time of year?

Salem's coldest month, January, registers temperatures that range from a high of 35.6°F (2°C) to a low of 17.6°F (-8°C).

How cold is January?

In January, the average high-temperature and low-temperature are 35.6°F (2°C) and 17.6°F (-8°C) respectively.

How many days does it rain in January?

In Salem, Massachusetts, in January, it is raining for 11 days, with typically 3.66" (93mm) of accumulated precipitation.

What is the ocean temperature in January?

In Salem, in January, the average water temperature is 41°F (5°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.

How many hours of daylight does Salem have in January?

In Salem, the average day length in January is 9h and 29min.

What time are sunrise and sunset in January?

On the first day of January, sunrise is at 7:13 am and sunset at 4:20 pm. On the last day of the month, sunrise is at 6:58 am and sunset at 4:55 pm EST.

What is the month with the least sunshine?

January, November and December, with an average of 5h of sunshine, are months with the least sunshine.

How long on average sun shines in January in Salem?

In Salem, the average sunshine duration in January is 5h.

What is the month with the lowest UV index?

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

How high is the UV index in January?

In Salem, the average daily maximum UV index in January is 1. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to UV radiation.
Average high temperature
Average rainfall days
Average sea temperature
Average daylight
Average sunshine
Average UV index

Average temperature in January
Salem, MA

Average temperature in January - Salem, MA
  • Average high temperature in January: 36°F

The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (36°F).

  • Average low temperature in January: 18°F

The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (18°F).

Average rainfall in January
Salem, MA

Average rainfall in January - Salem, MA
  • Average rainfall in January: 3.7"

The wettest month (with the highest rainfall) is November (4.6").
The driest month (with the least rainfall) is July (3").

Average rainfall days in January
Salem, MA

Average rainfall days in January - Salem, MA
  • Average rainfall days in January: 11 days

The month with the highest number of rainy days is December (12 days).
The month with the least rainy days is September (8 days).

Average sea temperature in January
Salem, MA

Average sea temperature in January - Salem, MA
  • Average sea temperature in January: 41°F

The best month for swimming (with the highest average sea temperature) is August (64°F).
The coldest month (with the lowest average sea temperature) is March (37°F).

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

Average daylight in January / Average sunshine in January - Salem, MA
  • Average daylight in January: 9h and 3min

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in January: 5h

The months with the most sunshine are June, July and August (Average sunshine: 9h).
The months with the least sunshine are January, November and December (Average sunshine: 5h).

Average UV index in January
Salem, MA

Average UV index in January - Salem, MA
  • Average UV index in January: 1

The months with the highest UV index are June and July (UV index 8).
The months with the lowest UV index are January and December (UV index 1).

Salem, Massachusetts, USA

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