Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
During the transition into December, Brookline observes a decrease in the average high-temperature, falling from a frosty 47.3°F (8.5°C) in November to a wintry 36.7°F (2.6°C). Throughout the month of December, Brookline expects an average low of 25.7°F (-3.5°C).Humidity
In Brookline, the average relative humidity in December is 79%.Rainfall
The wettest months in Brookline are October and December, with an average 2.83" (72mm) of rainfall.Snowfall
Months with snowfall in Brookline are January through May, October through December. In December, it is snowing for 5.5 days. Throughout December, 5" (127mm) of snow is accumulated. In Brookline, during the entire year, snow falls for 35.7 days and aggregates up to 25.35" (644mm) of snow.Daylight
The month with the shortest days in Brookline is December, with an average of 9h and 6min of daylight.On the first day of December in Brookline, sunrise is at 6:57 am and sunset at 4:13 pm. On the last day of the month, sunrise is at 7:16 am and sunset at 4:22 pm EST.
Sunshine
The average sunshine in December is 4.9h.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 value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: In December, the UV index of 2 transforms into the following advice:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Frequently asked questions
How cold is December in Brookline?
What is the average humidity in December in Brookline?
What is the rainiest month in Brookline?
How many days does it rain in December in Brookline?
How much does it snow in Brookline in December?
What is the month with the shortest days in Brookline?
How many hours of daylight does Brookline have in December?
What time are sunrise and sunset in December in Brookline?
How many hours of sunshine does Brookline have in December?
What is the month with the lowest UV index in Brookline?
How high is the UV index in December in Brookline?
Average temperature in December
Brookline, NH
- Average high temperature in December: 36.7°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 (30.9°F).
- Average low temperature in December: 25.7°F
The month with the highest average low temperature is July (61.7°F).
The coldest month (with the lowest average low temperature) is January (18.5°F).
Average pressure in December
Brookline, NH
- Average pressure in December: 30.04"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 December
Brookline, NH
- Average wind speed in December: 7.8mph
The windiest month (with the highest average wind speed) is January (8.3mph).
The calmest months (with the lowest average wind speed) are July and August (5.3mph).
Average humidity in December
Brookline, NH
- Average humidity in December: 79%
The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is April (71%).
Average rainfall in December
Brookline, NH
- Average rainfall in December: 2.83"
The wettest months (with the highest rainfall) are October and December (2.83").
The driest month (with the least rainfall) is September (1.5").
Average rainfall days in December
Brookline, NH
- Average rainfall days in December: 10.6 days
The month with the highest number of rainy days is July (15.8 days).
The month with the least rainy days is February (7.3 days).
Average snowfall in December
Brookline, NH
- Average snowfall in December: 5"
The month with the highest snowfall is February (6.38").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Brookline, NH
- Average snowfall days in December: 5.5 days
The month with the highest number of snowfall days is January (9.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Brookline, NH
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in December: 4h and 5min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in December
Brookline, NH
- Average sunshine days in December: 17.3 days
The month with the most sunshine days is November (17.6 days).
The month with the least sunshine days is May (13.2 days).
Average UV index in December
Brookline, NH
- Average UV index in December: 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 December
Brookline, NH
- Average cloud cover in December: 46
The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in December
Brookline, NH
- Average visibility in December: 6mi
The months with the highest visibility are April, November and December (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September and October (5mi).
Brookline, New Hampshire, USA
Weather forecast for your location
2. Allow the app to use your location
