January weather forecastJamaica Plain, MA
January
Weather in January
January, like December, in Jamaica Plain, Massachusetts, is a wintry winter month, with an average temperature varying between 33.8°F (1°C) and 22.5°F (-5.3°C).Temperature
Jamaica Plain records the coldest temperatures in January, averaging a high of 33.8°F (1°C) and a low of 22.5°F (-5.3°C).Humidity
January and February, with an average relative humidity of 77%, are the most humid months.Rainfall
In Jamaica Plain, in January, it is raining for 4.3 days, with typically 0.39" (10mm) of accumulated precipitation. In Jamaica Plain, during the entire year, the rain falls for 81.8 days and collects up to 5.51" (140mm) of precipitation.Snowfall
January through May, November and December are months with snowfall. In Jamaica Plain, Massachusetts, during January, snow falls for 4.8 days and regularly aggregates up to 0.35" (9mm) of snow. Throughout the year, there are 16.8 snowfall days, and 2.4" (61mm) of snow is accumulated.Daylight
In January, the average length of the day is 9h and 31min.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 Jamaica Plain, the average sunshine in January 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 estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for the average person.Note: The daily high UV index of 2 during January translates into the following recommendations:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. Avoiding the Sun during its peak radiation time around midday is a healthy practice. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Jamaica Plain, 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 (64.6°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).
Average pressure in January
Jamaica Plain, 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
Jamaica Plain, 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
Jamaica Plain, MA
- Average humidity in January: 77%
The months with the highest relative humidity are January and February (77%).
The month with the lowest relative humidity is April (69%).
Average rainfall in January
Jamaica Plain, MA
- Average rainfall in January: 0.39"
The wettest month (with the highest rainfall) is November (0.63").
The driest month (with the least rainfall) is September (0.2").
Average rainfall days in January
Jamaica Plain, MA
- Average rainfall days in January: 4.3 days
The month with the highest number of rainy days is July (9.6 days).
The month with the least rainy days is January (4.3 days).
Average snowfall in January
Jamaica Plain, MA
- Average snowfall in January: 0.35"
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
Jamaica Plain, MA
- Average snowfall days in January: 4.8 days
The month with the highest number of snowfall days is January (4.8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in January /
Average sunshine in January
Jamaica Plain, 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 12min
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
Jamaica Plain, MA
- Average sunshine days in January: 23.5 days
The month with the most sunshine days is January (23.5 days).
The month with the least sunshine days is June (17.4 days).
Average UV index in January
Jamaica Plain, 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
Jamaica Plain, 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
Jamaica Plain, 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).
