Winthrop
Massachusetts, USA
Long-term weather forecast
Long-term weather forecast

January weather forecast and climate
Winthrop, MA

January, the same as December, is a wintry winter month in Winthrop, Massachusetts, with average temperature varying between 34.2°F (1.2°C) and 22.6°F (-5.2°C).

Temperature

With an average high-temperature of 34.2°F (1.2°C) and an average low-temperature of 22.6°F (-5.2°C), January is the coldest month.

Humidity

In Winthrop, the average relative humidity is 76%.

Rainfall

In January, the rain falls for 7.9 days. Throughout January, 2.28" (58mm) of precipitation is accumulated. In Winthrop, during the entire year, the rain falls for 141.4 days and collects up to 27.2" (691mm) of precipitation.

Snowfall

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

Ocean temperature

In January, the average ocean temperature in Winthrop is 41.5°F (5.3°C).
Note: 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.

Daylight

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

Sunshine

In January, the average sunshine is 5.1h.

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 the exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily maximum UV index of 2 interpret into the following advice:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the coldest month in Winthrop?

January is the coldest month in Winthrop, Massachusetts, with an average high-temperature of 34.2°F (1.2°C) and an average low-temperature of 22.6°F (-5.2°C).

What is the temperature in January in Winthrop?

In January, in Winthrop, Massachusetts, the average high-temperature is 34.2°F (1.2°C), and the average low-temperature is 22.6°F (-5.2°C).

What is the average humidity in January in Winthrop?

In Winthrop, Massachusetts, the average relative humidity in January is 76%.

How many days does it rain in January in Winthrop?

In January, 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 January, in Winthrop, it is snowing for 7.6 days. Throughout January, 2.76" (70mm) of snow is accumulated.

What is the water temperature in January in Winthrop?

In January, the average ocean temperature in Winthrop, Massachusetts, is 41.5°F (5.3°C). 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.

How many hours of daylight does Winthrop have in January?

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

How long on average sun shines in January in Winthrop?

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

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

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

How high is the UV index in January in Winthrop?

In January, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from the exposure to the Sun's UV radiation.
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).

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%).

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").

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).

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

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

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

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

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).

Average daylight in January / Average sunshine in January - Winthrop, 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: 5.1h

The month with the most sunshine is August (Average sunshine: 10.5h).
The month with the least sunshine is February (Average sunshine: 4.6h).

Average UV index in January - Winthrop, 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).