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
Acton, Massachusetts, experiences its lowest average temperatures in January, reaching a peak of 32.5°F (0.3°C) and a minimum of 20.1°F (-6.6°C).Humidity
The average relative humidity in January is 78%.Rainfall
In Acton, Massachusetts, in January, it is raining for 5.5 days, with typically 1.18" (30mm) of accumulated precipitation. Throughout the year, in Acton, there are 116.3 rainfall days, and 15.87" (403mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall in Acton. In January, it is snowing for 6.4 days. Throughout January, 2.05" (52mm) of snow is accumulated. Throughout the year, there are 25.5 snowfall days, and 11.42" (290mm) of snow is accumulated.Daylight
In Acton, Massachusetts, the average length of the day in January is 9h and 29min.On the first day of January, sunrise is at 7:15 am and sunset at 4:23 pm. On the last day of the month, sunrise is at 7:00 am and sunset at 4:57 pm EST.
Sunshine
The average sunshine in January in Acton is 5h.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 exposure to the Sun's UV radiation for the ordinary person.Note: The maximum daily UV index, 2 in January, converts into the following recommendations:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Frequently asked questions
What part of the year is the coldest in Acton?
How cold is it in Acton in January?
What is the average humidity in January in Acton?
How much does it rain in Acton in January?
How many days does it snow in January in Acton?
How many hours of daylight does Acton have in January?
What time are sunrise and sunset in January in Acton?
How long on average sun shines in January in Acton?
What are the months with the lowest UV index in Acton?
How high is the UV index in January in Acton?
Average temperature in January
Acton, MA
- Average high temperature in January: 32.5°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 (32.5°F).
- Average low temperature in January: 20.1°F
The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).
Average pressure in January
Acton, 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
Acton, MA
- Average wind speed in January: 8.6mph
The windiest month (with the highest average wind speed) is January (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in January
Acton, MA
- Average humidity in January: 78%
The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is April (70%).
Average rainfall in January
Acton, MA
- Average rainfall in January: 1.18"
The wettest month (with the highest rainfall) is October (1.65").
The driest month (with the least rainfall) is September (0.79").
Average rainfall days in January
Acton, MA
- Average rainfall days in January: 5.5 days
The month with the highest number of rainy days is July (13.2 days).
The month with the least rainy days is February (5.4 days).
Average snowfall in January
Acton, MA
- Average snowfall in January: 2.05"
The month with the highest snowfall is February (2.87").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Acton, MA
- Average snowfall days in January: 6.4 days
The month with the highest number of snowfall days is January (6.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Acton, 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 0min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in January
Acton, MA
- Average sunshine days in January: 19.4 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is April (15.8 days).
Average UV index in January
Acton, 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
Acton, 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 34).
Average visibility in January
Acton, 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).
Acton, Massachusetts, USA
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