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 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
Rockland's coldest month, January, registers temperatures that range from a high of 34.9°F (1.6°C) to a low of 23.5°F (-4.7°C).Humidity
The months with the highest humidity are January, February, June, September and October, with an average relative humidity of 77%.Rainfall
In Rockland, during January, the rain falls for 8.4 days and regularly aggregates up to 2.4" (61mm) of precipitation. Throughout the year, in Rockland, there are 149.9 rainfall days, and 28.62" (727mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, November and December. In Rockland, in January, during 7.8 snowfall days, 2.72" (69mm) of snow is typically accumulated. In Rockland, during the entire year, snow falls for 31 days and aggregates up to 14.88" (378mm) of snow.Daylight
In Rockland, the average length of the day in January is 9h and 31min.On the first day of January in Rockland, sunrise is at 7:12 am and sunset at 4:22 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 4:56 pm EST.
Sunshine
In January, the average sunshine in Rockland 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 of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for the ordinary person.Note: In January, the maximum UV index of 2 suggests these recommendations:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Frequently asked questions
What is the coldest time of year in Rockland?
How cold is January in Rockland?
What is the most humid month in Rockland?
What is the average humidity in January in Rockland?
How many days does it rain in January in Rockland?
How much does it snow in Rockland in January?
What is the average length of the day in January in Rockland?
What time are sunrise and sunset in January in Rockland?
How long on average sun shines in January in Rockland?
When is the lowest UV index in Rockland?
How high is the UV index in January in Rockland?
Average temperature in January
Rockland, MA
- Average high temperature in January: 34.9°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (34.9°F).
- Average low temperature in January: 23.5°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 (23.5°F).
Average pressure in January
Rockland, 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).
Average wind speed in January
Rockland, MA
- Average wind speed in January: 10.1mph
The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity in January
Rockland, MA
- Average humidity in January: 77%
The months with the highest relative humidity are January, February, June, September and October (77%).
The month with the lowest relative humidity is April (71%).
Average rainfall in January
Rockland, MA
- Average rainfall in January: 2.4"
The wettest month (with the highest rainfall) is April (3.11").
The driest month (with the least rainfall) is September (1.42").
Average rainfall days in January
Rockland, MA
- Average rainfall days in January: 8.4 days
The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is January (8.4 days).
Average snowfall in January
Rockland, MA
- Average snowfall in January: 2.72"
The month with the highest snowfall is February (3.86").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in January
Rockland, MA
- Average snowfall days in January: 7.8 days
The month with the highest number of snowfall days is February (8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in January /
Average sunshine in January
Rockland, 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 12min).
- 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 42min).
Average sunshine days in January
Rockland, MA
- Average sunshine days in January: 16.8 days
The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is April (12.8 days).
Average UV index in January
Rockland, 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).
Average cloud cover in January
Rockland, 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 31).
Average visibility in January
Rockland, 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).
Rockland, Massachusetts, USA
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