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
Wellesley's coldest month, January, registers temperatures that range from a high of 33.1°F (0.6°C) to a low of 21.2°F (-6°C).Humidity
In January, the average relative humidity is 77%.Rainfall
In January, in Wellesley, the rain falls for 7.3 days. Throughout January, 1.93" (49mm) of precipitation is accumulated. In Wellesley, during the entire year, the rain falls for 141.8 days and collects up to 24.21" (615mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Wellesley. In Wellesley, in January, during 7.2 snowfall days, 2.68" (68mm) of snow is typically accumulated. In Wellesley, during the entire year, snow falls for 28.5 days and aggregates up to 15.91" (404mm) of snow.Daylight
In January, the average length of the day in Wellesley is 9h and 31min.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, in Wellesley, sunrise is at 6:59 am and sunset at 4:57 pm EST.
Sunshine
In Wellesley, Massachusetts, the average sunshine in January is 5.1h.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 minimal health hazard from unprotected exposure to Sun's UV rays for the average person.Note: In January, the maximum UV index of 2 transforms into these recommendations:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Opt for tightly woven and loose clothing to enhance protection from the Sun. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Frequently asked questions
What is the coldest time of year in Wellesley?
How cold is it in Wellesley in January?
What is the average humidity in January in Wellesley?
How much does it rain in Wellesley in January?
How many days does it snow in January in Wellesley?
What is the average length of the day in January in Wellesley?
What time are sunrise and sunset in January in Wellesley?
How many hours of sunshine does Wellesley have in January?
What are the months with the lowest UV index in Wellesley?
How high is the UV index in January in Wellesley?
Average temperature in January
Wellesley, 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
Wellesley, 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
Wellesley, 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
Wellesley, 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
Wellesley, 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
Wellesley, 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
Wellesley, 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
Wellesley, 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
Wellesley, 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 48min).
Average sunshine days in January
Wellesley, 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
Wellesley, 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
Wellesley, 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
Wellesley, 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).
Wellesley, Massachusetts, USA
Weather forecast for your location
2. Allow the app to use your location
