January weather forecast and climate
Cambridge, MA

The John Weeks Memorial Footbridge in Cambridge, Massachusetts, over the Charles River calm waters, and a distant view of the Havard University student residence unit
The John Weeks Memorial Footbridge in Cambridge, Massachusetts, over the Charles River calm waters, and a distant view of the Havard University student residence unit
January, the same as December, is another cold winter month in Cambridge, Massachusetts, with temperature in the range of an average low of 22.5°F (-5.3°C) and an average high of 33.8°F (1°C).

Temperature

January is the coldest month, with an average high-temperature of 33.8°F (1°C) and an average low-temperature of 22.5°F (-5.3°C).

Humidity

Months with the highest humidity in Cambridge are January and February, with an average relative humidity of 77%.

Rainfall

In Cambridge, Massachusetts, during 4.3 rainfall days, 0.39" (10mm) of precipitation is typically accumulated. In Cambridge, Massachusetts, during the entire year, the rain falls for 81.8 days and collects up to 5.51" (140mm) of precipitation.

Snowfall

Months with snowfall are January through May, November and December. In Cambridge, snow falls for 4.8 days, with typically accumulated 0.35" (9mm) of snow. Throughout the year, there are 16.8 snowfall days, and 2.4" (61mm) of snow is accumulated.

Daylight

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

Sunshine

In January, the average sunshine in Cambridge is 5.2h.

UV index

Months with the lowest UV index in Cambridge 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 threat to health from the exposure to the Sun's UV rays for ordinary individuals.
Note: In January, the average maximum UV index of 2 translate into the following recommendations:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the coldest month in Cambridge?

The coldest month in Cambridge is January, with an average high-temperature of 33.8°F (1°C) and an average low-temperature of 22.5°F (-5.3°C).

What is the temperature in January in Cambridge?

In Cambridge, in January, the average high-temperature is 33.8°F (1°C), and the average low-temperature is 22.5°F (-5.3°C).

What are the most humid months in Cambridge?

Months with the highest humidity in Cambridge are January and February, with an average relative humidity of 77%.

What is the average humidity in January in Cambridge?

In Cambridge, Massachusetts, the average relative humidity in January is 77%.

How many days does it rain in January in Cambridge?

In January, in Cambridge, Massachusetts, the rain falls for 4.3 days. Throughout January, 0.39" (10mm) of precipitation is accumulated.

How many days does it snow in January in Cambridge?

In Cambridge, in January, during 4.8 snowfall days, 0.35" (9mm) of snow is typically accumulated.

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

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

How long on average sun shines in January in Cambridge?

In January, the average sunshine is 5.2h.

What is the month with the lowest UV index in Cambridge?

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

What is the UV index reading in January in Cambridge?

The average daily maximum UV index in January is 2. A UV Index estimate of 2, and below, represents a low health threat from unprotected exposure to the UV radiation.
Average temperature in January - Cambridge, MA
  • Average high temperature in January: 33.8°F

The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (33.8°F).

  • Average low temperature in January: 22.5°F

The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).

Average pressure in January - Cambridge, MA
  • Average pressure in January: 30.01"

The month with the highest atmospheric pressure is November (30.06").
The month with the lowest atmospheric pressure is June (29.93").

Average wind speed in January - Cambridge, MA
  • Average wind speed in January: 9.5mph

The windiest month (with the highest average wind speed) is January (9.5mph).
The calmest month (with the lowest average wind speed) is August (6mph).

Average humidity in January - Cambridge, MA
  • Average humidity in January: 77%

Months with the highest relative humidity are January and February (77%).
The month with the lowest relative humidity is April (69%).

Average rainfall in January - Cambridge, MA
  • Average rainfall in January: 0.39"

The wettest month (with the highest rainfall) is November (0.63").
The driest month (with the least rainfall) is September (0.2").

Average rainfall days in January - Cambridge, MA
  • Average rainfall days in January: 4.3 days

The month with the highest number of rainy days is July (9.6 days).
The month with the least rainy days is January (4.3 days).

Average snowfall in January - Cambridge, MA
  • Average snowfall in January: 0.35"

The month with the highest snowfall is December (0.71").
Months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in January - Cambridge, MA
  • Average snowfall days in January: 4.8 days

The month with the highest number of snowfall days is January (4.8 days).
Months with the least snowfall days are June, July, August, September and October (0 days).

Average daylight in January / Average sunshine in January - Cambridge, MA
  • Average daylight in January: 9.5h

The month with the longest days is June (Average daylight: 15.2h).
The month with the shortest days is December (Average daylight: 9.1h).

  • Average sunshine in January: 5.2h

The month with the most sunshine is August (Average sunshine: 10.5h).
The month with the least sunshine is February (Average sunshine: 4.7h).

Average sunshine days in January - Cambridge, MA
  • Average sunshine days in January: 23.5 days

The month with the most sunshine days is January (23.5 days).
The month with the least sunshine days is June (17.4 days).

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

Months with the highest UV index are June, July and August (UV index 6).
Months with the lowest UV index are January, February, March, November and December (UV index 2).

Average cloud cover in January - Cambridge, 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 32).

Average visibility in January - Cambridge, 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).