January weather forecast
Winthrop, MA

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Weather in January

January, like December, in Winthrop, Massachusetts, is a wintry winter month, with temperature in the range of an average high of 34.2°F (1.2°C) and an average low of 22.6°F (-5.2°C).

Temperature

January is the month when Winthrop experiences its coldest temperatures, averaging a high of 34.2°F (1.2°C) and a low of 22.6°F (-5.2°C).

Humidity

The average relative humidity in January in Winthrop is 76%.

Rainfall

In Winthrop, Massachusetts, in January, during 7.9 rainfall days, 2.28" (58mm) of precipitation is typically accumulated. Throughout the year, there are 141.4 rainfall days, and 27.2" (691mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall in Winthrop. In Winthrop, in January, during 7.6 snowfall days, 2.76" (70mm) of snow is typically accumulated. In Winthrop, Massachusetts, during the entire year, snow falls for 29.8 days and aggregates up to 15.75" (400mm) of snow.

Ocean temperature

In Winthrop, in January, the average water temperature is 41.5°F (5.3°C).
Note: Being in 41.5°F (5.3°C) waters at 55.4°F (13°C) is discomforting, but anything below 50°F (10°C) can jeopardize breathing and induce cold shock, factoring in physical endurance.

Daylight

In January, the average length of the day in Winthrop is 9h and 30min.
On the first day of January in Winthrop, sunrise is at 7:13 am and sunset at 4:21 pm. On the last day of the month, sunrise is at 6:58 am and sunset at 4:55 pm EST.

Sunshine

The average sunshine in January in Winthrop is 5.1h.

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 reading of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A maximum daily UV index of 2 during January morphs into the following directions:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
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Frequently asked questions

What is the coldest month in Winthrop?

January stands out as Winthrop's coldest month, with temperatures ranging between an average high of 34.2°F (1.2°C) and a low of 22.6°F (-5.2°C).

How cold is January in Winthrop?

The average high-temperature and low-temperature in Winthrop, Massachusetts, during January are 34.2°F (1.2°C) and 22.6°F (-5.2°C) respectively.

What is the average humidity in January in Winthrop?

The average relative humidity in January in Winthrop is 76%.

How much does it rain in Winthrop in January?

In January, in Winthrop, the rain falls for 7.9 days. Throughout January, 2.28" (58mm) of precipitation is accumulated.

How many days does it snow in January in Winthrop?

In Winthrop, in January, snow falls for 7.6 days, with typically accumulated 2.76" (70mm) of snow.

How cold is the water in January in Winthrop?

In Winthrop, Massachusetts, 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.

How many hours of daylight does Winthrop have in January?

In January, the average day length in Winthrop is 9h and 30min.

When is the sunrise / sunset in January in Winthrop?

On the first day of January in Winthrop, sunrise is at 7:13 am and sunset at 4:21 pm. On the last day of the month, sunrise is at 6:58 am and sunset at 4:55 pm EST.

How long on average sun shines in January in Winthrop?

In January, the average sunshine duration in Winthrop is 5.1h.

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

The months with the lowest UV index in Winthrop, 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 Winthrop?

The average daily maximum UV index in January in Winthrop is 2. A UV Index of 2, and less, symbolizes a low health threat from exposure to the Sun's 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
Winthrop, MA

Average temperature in January - Winthrop, MA
  • Average high temperature in January: 34.2°F

The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (34.2°F).

  • Average low temperature in January: 22.6°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (22.6°F).

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Average pressure in January
Winthrop, MA

Average pressure in January - Winthrop, MA
  • Average pressure in January: 30"Hg

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

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Average wind speed in January
Winthrop, MA

Average wind speed in January - Winthrop, MA
  • Average wind speed in January: 9.9mph

The windiest month (with the highest average wind speed) is January (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).

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Average humidity in January
Winthrop, MA

Average humidity in January - Winthrop, MA
  • Average humidity in January: 76%

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

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Average rainfall in January
Winthrop, MA

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

The wettest months (with the highest rainfall) are March, April and December (2.91").
The driest month (with the least rainfall) is September (1.26").

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Average rainfall days in January
Winthrop, MA

Average rainfall days in January - Winthrop, MA
  • Average rainfall days in January: 7.9 days

The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is January (7.9 days).

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Average snowfall in January
Winthrop, MA

Average snowfall in January - Winthrop, MA
  • Average snowfall in January: 2.76"

The month with the highest snowfall is February (4.72").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in January
Winthrop, MA

Average snowfall days in January - Winthrop, MA
  • Average snowfall days in January: 7.6 days

The months with the highest number of snowfall days are January and February (7.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average sea temperature in January
Winthrop, MA

Average sea temperature in January - Winthrop, MA
  • Average sea temperature in January: 41.5°F

The best month for swimming (with the highest average sea temperature) is August (67.6°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
Winthrop, MA

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

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in January: 5h and 1min

The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

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Average sunshine days in January
Winthrop, MA

Average sunshine days in January - Winthrop, MA
  • Average sunshine days in January: 17.5 days

The month with the most sunshine days is September (17.7 days).
The month with the least sunshine days is April (13 days).

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Average UV index in January
Winthrop, MA

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

The months with the highest UV index are June, July and August (UV index 6).
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
Winthrop, MA

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

The month with the most cloud cover is March (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 32).

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Average visibility in January
Winthrop, MA

Average visibility in January - Winthrop, MA
  • 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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Winthrop, Massachusetts, USA

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