January weather forecastRockport, MA
January
Weather in January
January, the same as December, is another cold winter month in Rockport, Massachusetts, with an average temperature varying between 34.9°F (1.6°C) and 26.1°F (-3.3°C).Temperature
Rockport experiences its lowest temperatures in January, with an average peak of 34.9°F (1.6°C) and a low of 26.1°F (-3.3°C).Humidity
The average relative humidity in January is 75%.Rainfall
In Rockport, in January, during 8.3 rainfall days, 2.28" (58mm) of precipitation is typically accumulated. In Rockport, during the entire year, the rain falls for 150.9 days and collects up to 30.75" (781mm) of precipitation.Snowfall
Months with snowfall are January through April, November and December. In Rockport, in January, snow falls for 7.8 days, with typically accumulated 1.93" (49mm) of snow. In Rockport, during the entire year, snow falls for 27.4 days and aggregates up to 9.17" (233mm) of snow.Ocean temperature
In Rockport, 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 Rockport, the average length of the day in January is 9h and 28min.On the first day of the month, sunrise is at 7:12 am and sunset at 4:19 pm. On the last day of January, sunrise is at 6:57 am and sunset at 4:53 pm EST.
Sunshine
In Rockport, the average sunshine in January is 5h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for the average person.Note: The UV index of 2 during January leads to these advisories:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. The Sun's radiation is especially intense around midday; try to stay in shade during this period. 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. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Rockport, MA
- Average high temperature in January: 34.9°F
The warmest month (with the highest average high temperature) is August (73°F).
The month with the lowest average high temperature is January (34.9°F).
- Average low temperature in January: 26.1°F
The month with the highest average low temperature is August (65.5°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).
Average pressure in January
Rockport, MA
- Average pressure in January: 29.99"Hg
The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in January
Rockport, MA
- Average wind speed in January: 15.2mph
The windiest month (with the highest average wind speed) is January (15.2mph).
The calmest months (with the lowest average wind speed) are July and August (8.9mph).
Average humidity in January
Rockport, MA
- Average humidity in January: 75%
The month with the highest relative humidity is June (81%).
The month with the lowest relative humidity is November (73%).
Average rainfall in January
Rockport, MA
- Average rainfall in January: 2.28"
The wettest month (with the highest rainfall) is December (3.23").
The driest month (with the least rainfall) is September (1.73").
Average rainfall days in January
Rockport, MA
- Average rainfall days in January: 8.3 days
The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is February (8.2 days).
Average snowfall in January
Rockport, MA
- Average snowfall in January: 1.93"
The month with the highest snowfall is February (2.6").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in January
Rockport, MA
- Average snowfall days in January: 7.8 days
The month with the highest number of snowfall days is January (7.8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average sea temperature in January
Rockport, MA
- Average sea temperature in January: 41.6°F
The best month for swimming (with the highest average sea temperature) is August (66.4°F).
The coldest month (with the lowest average sea temperature) is March (38.8°F).
Average daylight in January /
Average sunshine in January
Rockport, MA
- Average daylight in January: 9h and 30min
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 and 0min
The month with the most sunshine is August (Average sunshine: 10h and 48min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).
Average sunshine days in January
Rockport, MA
- Average sunshine days in January: 15.7 days
The months with the most sunshine days are September and November (16.7 days).
The month with the least sunshine days is February (13.1 days).
Average UV index in January
Rockport, MA
- Average UV index in January: 2
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in January
Rockport, 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 27).
Average visibility in January
Rockport, 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).
