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
January is Somerville's coldest month, registering average high temperatures of 33.8°F (1°C) and lows of 22.5°F (-5.3°C).Humidity
In Somerville, the average relative humidity in January is 77%.Rainfall
In Somerville, during January, the rain falls for 2.9 days and regularly aggregates up to 0.35" (9mm) of precipitation. Throughout the year, there are 47.8 rainfall days, and 4.13" (105mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, November and December. In Somerville, in January, snow falls for 3.4 days, with typically accumulated 0.2" (5mm) of snow. Throughout the year, there are 13.2 snowfall days, and 2.17" (55mm) of snow is accumulated.Daylight
The average length of the day in January is 9h and 30min.On the first day of January, sunrise is at 7:13 am and sunset at 4:22 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 4:56 pm EST.
Sunshine
In January, the average sunshine is 5.2h.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 reading of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for the ordinary person.Note: A maximum high daily UV index of 2 during January translates into the following directions:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight 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. Take precaution! The reflection from snow can almost double the UV radiation of 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 many days does it rain in January?
How many days does it snow in January?
How many hours of daylight does Somerville have in January?
What time are sunrise and sunset in January?
How long on average sun shines in January?
What are the months with the lowest UV index in Somerville?
How high is the UV index in January?
Average temperature in January
Somerville, MA
- Average high temperature in January: 33.8°F
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (33.8°F).
- Average low temperature in January: 22.5°F
The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).
Average pressure in January
Somerville, MA
- Average pressure in January: 30.01"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
Somerville, MA
- Average wind speed in January: 9.6mph
The windiest month (with the highest average wind speed) is January (9.6mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in January
Somerville, MA
- Average humidity in January: 77%
The month with the highest relative humidity is February (78%).
The month with the lowest relative humidity is April (69%).
Average rainfall in January
Somerville, MA
- Average rainfall in January: 0.35"
The wettest month (with the highest rainfall) is November (0.55").
The driest month (with the least rainfall) is September (0.12").
Average rainfall days in January
Somerville, MA
- Average rainfall days in January: 2.9 days
The month with the highest number of rainy days is April (5.9 days).
The months with the least rainy days are January and September (2.9 days).
Average snowfall in January
Somerville, MA
- Average snowfall in January: 0.2"
The month with the highest snowfall is December (0.71").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in January
Somerville, MA
- Average snowfall days in January: 3.4 days
The month with the highest number of snowfall days is January (3.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Somerville, 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 6min).
- 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 36min).
Average sunshine days in January
Somerville, MA
- Average sunshine days in January: 25 days
The month with the most sunshine days is December (25.5 days).
The month with the least sunshine days is July (22.8 days).
Average UV index in January
Somerville, 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
Somerville, 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 32).
Average visibility in January
Somerville, 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).
Somerville, Massachusetts, USA
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