December weather forecastMillbrook, NY
December
Weather in December
December, the first month of the winter in Millbrook, is also a wintry month, with an average temperature fluctuating between 26.1°F (-3.3°C) and 37.2°F (2.9°C).Temperature
December's onset corresponds with a shift in the average high-temperature, moving from a chilly 47.3°F (8.5°C) in November to a cold 37.2°F (2.9°C). Millbrook experiences an average low-temperature of 26.1°F (-3.3°C) in the month of December.Humidity
February and December, with an average relative humidity of 81%, are the most humid months.Rainfall
In Millbrook, during December, the rain falls for 11.6 days and regularly aggregates up to 3.31" (84mm) of precipitation. Throughout the year, there are 160.1 rainfall days, and 32.99" (838mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Millbrook, during December, snow falls for 7.5 days and regularly aggregates up to 3.58" (91mm) of snow. Throughout the year, there are 41.2 snowfall days, and 20.28" (515mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 12min of daylight.On the first day of the month, sunrise is at 7:03 am and sunset at 4:24 pm. On the last day of December, sunrise is at 7:21 am and sunset at 4:34 pm EST.
Sunshine
In December, the average sunshine is 4.5h.UV index
With an average maximum UV index of 1, December is the month with the lowest UV index. A UV Index of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A maximum daily UV index of 1 during December morphs into the following directions:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Stay alert! Snow's reflective properties 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 December
Millbrook, NY
- Average high temperature in December: 37.2°F
The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (31.6°F).
- Average low temperature in December: 26.1°F
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (19.4°F).
Average pressure in December
Millbrook, NY
- Average pressure in December: 30.06"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Millbrook, NY
- Average wind speed in December: 6.9mph
The windiest month (with the highest average wind speed) is March (7.6mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in December
Millbrook, NY
- Average humidity in December: 81%
The months with the highest relative humidity are February and December (81%).
The month with the lowest relative humidity is April (74%).
Average rainfall in December
Millbrook, NY
- Average rainfall in December: 3.31"
The wettest month (with the highest rainfall) is July (3.39").
The driest month (with the least rainfall) is September (2.01").
Average rainfall days in December
Millbrook, NY
- Average rainfall days in December: 11.6 days
The month with the highest number of rainy days is July (17.6 days).
The month with the least rainy days is January (8.1 days).
Average snowfall in December
Millbrook, NY
- Average snowfall in December: 3.58"
The month with the highest snowfall is February (5.16").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Millbrook, NY
- Average snowfall days in December: 7.5 days
The month with the highest number of snowfall days is February (10.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Millbrook, NY
- Average daylight in December: 9h and 12min
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 December: 4h and 30min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).
Average sunshine days in December
Millbrook, NY
- Average sunshine days in December: 15 days
The month with the most sunshine days is November (16.4 days).
The month with the least sunshine days is June (11.2 days).
Average UV index in December
Millbrook, NY
- Average UV index in December: 1
The month with the highest UV index is June (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Millbrook, NY
- Average cloud cover in December: 51
The month with the most cloud cover is February (Cloud cover 53).
The months with the least cloud cover are July and August (Cloud cover 37).
Average visibility in December
Millbrook, NY
- Average visibility in December: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).
