Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average sea temperature in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
In Rockland, the lowest temperatures are generally noted in January, averaging a high of 31.8°F (-0.1°C) and a low of 22.1°F (-5.5°C).Humidity
In January, the average relative humidity is 78%.Rainfall
In Rockland, during January, the rain falls for 7.9 days and regularly aggregates up to 2.6" (66mm) of precipitation. In Rockland, during the entire year, the rain falls for 144.8 days and collects up to 30.63" (778mm) of precipitation.Snowfall
January through April, November and December are months with snowfall. The month with the most snowfall is January, when snow falls for 8.5 days and typically aggregates up to 2.83" (72mm) of snow.Ocean temperature
In January, the average ocean temperature is 41.2°F (5.1°C).Note: Staying in 41.2°F (5.1°C) waters for just a few moments at 55.4°F (13°C) can be harrowing, and below 50°F (10°C) poses breathing and cold shock risks, depending on individual tolerance.
Daylight
The average length of the day in January is 9h and 20min.On the first day of the month, sunrise is at 7:11 am and sunset at 4:08 pm. On the last day of January, sunrise is at 6:55 am and sunset at 4:44 pm EST.
Sunshine
In January, the average sunshine is 4.9h.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 exposure to the Sun's UV rays for the average person.Note: In January, the maximum UV index of 2 transforms into these recommendations:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year?
How cold is it in January?
What is the average humidity in January?
How much does it rain in January?
When does it snow the most?
How many days does it snow in January?
What is the ocean temperature in January?
How many hours of daylight does Rockland have in January?
What time are sunrise and sunset in January?
How many hours of sunshine does Rockland have in January?
When is the lowest UV index?
What is the UV index reading in January?
Average temperature in January
Rockland, ME
- Average high temperature in January: 31.8°F
The warmest month (with the highest average high temperature) is August (68.7°F).
The month with the lowest average high temperature is January (31.8°F).
- Average low temperature in January: 22.1°F
The month with the highest average low temperature is August (60.6°F).
The coldest month (with the lowest average low temperature) is January (22.1°F).
Average pressure in January
Rockland, ME
- Average pressure in January: 29.96"Hg
The month with the highest atmospheric pressure is September (30.04"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in January
Rockland, ME
- Average wind speed in January: 14.9mph
The windiest month (with the highest average wind speed) is January (14.9mph).
The calmest months (with the lowest average wind speed) are July and August (8.2mph).
Average humidity in January
Rockland, ME
- Average humidity in January: 78%
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is November (75%).
Average rainfall in January
Rockland, ME
- Average rainfall in January: 2.6"
The wettest month (with the highest rainfall) is December (3.35").
The driest month (with the least rainfall) is September (1.81").
Average rainfall days in January
Rockland, ME
- Average rainfall days in January: 7.9 days
The month with the highest number of rainy days is April (15.8 days).
The month with the least rainy days is January (7.9 days).
Average snowfall in January
Rockland, ME
- Average snowfall in January: 2.83"
The month with the highest snowfall is January (2.83").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in January
Rockland, ME
- Average snowfall days in January: 8.5 days
The month with the highest number of snowfall days is January (8.5 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average sea temperature in January
Rockland, ME
- Average sea temperature in January: 41.2°F
The best month for swimming (with the highest average sea temperature) is August (60.4°F).
The coldest month (with the lowest average sea temperature) is March (37.8°F).
Average daylight in January /
Average sunshine in January
Rockland, ME
- Average daylight in January: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in January: 4h and 5min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 4h and 30min).
Average sunshine days in January
Rockland, ME
- Average sunshine days in January: 14.8 days
The month with the most sunshine days is September (18 days).
The month with the least sunshine days is April (11.5 days).
Average UV index in January
Rockland, ME
- Average UV index in January: 2
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in January
Rockland, ME
- Average cloud cover in January: 49
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in January
Rockland, ME
- 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).
Rockland, Maine, USA
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