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
In Mattapan, the lowest average temperatures are observed in January, with a high of 33.6°F (0.9°C) and a low of 21.9°F (-5.6°C).Humidity
In Mattapan, the average relative humidity in January is 77%.Rainfall
In Mattapan, in January, during 7.8 rainfall days, 2.32" (59mm) of precipitation is typically accumulated. In Mattapan, during the entire year, the rain falls for 147.4 days and collects up to 28.39" (721mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. In Mattapan, in January, during 7.9 snowfall days, 3.39" (86mm) of snow is typically accumulated. Throughout the year, there are 32.7 snowfall days, and 22.01" (559mm) of snow is accumulated.Daylight
In Mattapan, Massachusetts, the average length of the day in January is 9h and 31min.On the first day of the month, sunrise is at 7:13 am and sunset at 4:22 pm. On the last day of January, sunrise is at 6:58 am and sunset at 4:56 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 reading of 2, and below, represents a low health risk from unsafe exposure to UV radiation for ordinary individuals.Note: A daily high UV index of 2 in January leads to these guidelines:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. It's recommended to limit sun exposure when its radiation is at its peak during midday. During bright days, sunglasses that offer UVA and UVB defense are recommended. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest?
How cold is January in Mattapan?
What is the average humidity in January?
How much does it rain in January?
How much does it snow in January?
What is the average length of the day in January?
When are sunrise and sunset in January?
How long on average sun shines in January?
What is the month with the lowest UV index?
What is the UV index reading in January?
Average temperature in January
Mattapan, MA
- Average high temperature in January: 33.6°F
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (33.6°F).
- Average low temperature in January: 21.9°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 (21.9°F).
Average pressure in January
Mattapan, 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 (29.93"Hg).
Average wind speed in January
Mattapan, MA
- Average wind speed in January: 9.5mph
The windiest month (with the highest average wind speed) is January (9.5mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in January
Mattapan, 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 (70%).
Average rainfall in January
Mattapan, MA
- Average rainfall in January: 2.32"
The wettest month (with the highest rainfall) is December (2.95").
The driest month (with the least rainfall) is September (1.5").
Average rainfall days in January
Mattapan, MA
- Average rainfall days in January: 7.8 days
The month with the highest number of rainy days is July (15.8 days).
The months with the least rainy days are January and February (7.8 days).
Average snowfall in January
Mattapan, MA
- Average snowfall in January: 3.39"
The month with the highest snowfall is March (5.24").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Mattapan, MA
- Average snowfall days in January: 7.9 days
The month with the highest number of snowfall days is February (8.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Mattapan, 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
Mattapan, MA
- Average sunshine days in January: 17.3 days
The month with the most sunshine days is November (18 days).
The month with the least sunshine days is April (13.2 days).
Average UV index in January
Mattapan, 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
Mattapan, 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 33).
Average visibility in January
Mattapan, 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).
Mattapan, Massachusetts, USA
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