January weather forecastSudbury, MA
January
Weather in January
January, the same as December, is a wintry winter month in Sudbury, Massachusetts, with an average temperature ranging between min 21.2°F (-6°C) and max 33.1°F (0.6°C).Temperature
January, with its average high-temperature of 33.1°F (0.6°C) and an average low-temperature of 21.2°F (-6°C), holds the record as the coldest month.Humidity
In January, the average relative humidity is 77%.Rainfall
In Sudbury, in January, during 7.3 rainfall days, 1.93" (49mm) of precipitation is typically accumulated. In Sudbury, during the entire year, the rain falls for 141.8 days and collects up to 24.21" (615mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Sudbury, during January, snow falls for 7.2 days and regularly aggregates up to 2.68" (68mm) of snow. In Sudbury, during the entire year, snow falls for 28.5 days and aggregates up to 15.91" (404mm) of snow.Daylight
The average length of the day in January is 9h and 30min.On the first day of the month, sunrise is at 7:14 am and sunset at 4:23 pm. On the last day of January, sunrise is at 7:00 am and sunset at 4:57 pm EST.
Sunshine
In January, the average sunshine 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 estimate of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: The daily high UV index of 2 during January translates into the following recommendations:
Children necessitate constant protection from sunlight, unlike the majority, who can remain under the sun for about an hour without burning. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Sudbury, MA
- Average high temperature in January: 33.1°F
The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (33.1°F).
- Average low temperature in January: 21.2°F
The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (21.2°F).
Average pressure in January
Sudbury, MA
- Average pressure in January: 30.01"Hg
The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in January
Sudbury, MA
- Average wind speed in January: 8.8mph
The windiest month (with the highest average wind speed) is January (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity in January
Sudbury, MA
- Average humidity in January: 77%
The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is April (70%).
Average rainfall in January
Sudbury, MA
- Average rainfall in January: 1.93"
The wettest month (with the highest rainfall) is March (2.4").
The driest month (with the least rainfall) is September (1.18").
Average rainfall days in January
Sudbury, MA
- Average rainfall days in January: 7.3 days
The month with the highest number of rainy days is July (15.6 days).
The month with the least rainy days is January (7.3 days).
Average snowfall in January
Sudbury, MA
- Average snowfall in January: 2.68"
The month with the highest snowfall is February (4.17").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Sudbury, MA
- Average snowfall days in January: 7.2 days
The month with the highest number of snowfall days is January (7.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Sudbury, MA
- Average daylight in January: 9h and 30min
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 6min
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 48min).
Average sunshine days in January
Sudbury, MA
- Average sunshine days in January: 17.4 days
The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is April (13.2 days).
Average UV index in January
Sudbury, 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
Sudbury, MA
- Average cloud cover in January: 44
The month with the most cloud cover is March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in January
Sudbury, MA
- Average visibility in January: 6mi
The months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is February (5mi).
