January weather forecast
Salem, MA

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.