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
December's arrival comes with a decrease in the average high-temperature, moving from a cold 38.8°F (3.8°C) in November to a subzero cold 27.7°F (-2.4°C). Lancaster observes an average low-temperature of 17.2°F (-8.2°C) during December nights.Humidity
In December, the average relative humidity is 86%.Rainfall
In December, the rain falls for 9.2 days. Throughout December, 2.48" (63mm) of precipitation is accumulated. In Lancaster, during the entire year, the rain falls for 150.5 days and collects up to 27.99" (711mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In December, it is snowing for 20 days. Throughout December, 9.53" (242mm) of snow is accumulated. In Lancaster, New Hampshire, during the entire year, snow falls for 104.2 days and aggregates up to 61.02" (1550mm) of snow.Daylight
The month with the shortest days is December, with an average of 8h and 54min of daylight.On the first day of the month, sunrise is at 7:03 am and sunset at 4:07 pm. On the last day of December, in Lancaster, sunrise is at 7:22 am and sunset at 4:16 pm EST.
Sunshine
In Lancaster, the average sunshine in December is 3h.UV index
The months with the lowest UV index are January, February and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: In December, the average maximum UV index of 1 translates into the following recommendations:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the average humidity in December?
How many days does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Lancaster have in December?
When is the sunrise / sunset in December?
How many hours of sunshine does Lancaster have in December?
What is the month with the lowest UV index?
What is the UV index intensity in December in Lancaster?
Average temperature in December
Lancaster, NH
- Average high temperature in December: 27.7°F
The warmest month (with the highest average high temperature) is July (75.6°F).
The month with the lowest average high temperature is January (22.5°F).
- Average low temperature in December: 17.2°F
The month with the highest average low temperature is July (53.2°F).
The coldest month (with the lowest average low temperature) is January (9°F).
Average pressure in December
Lancaster, NH
- Average pressure in December: 30.03"Hg
The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Lancaster, NH
- Average wind speed in December: 5.8mph
The windiest month (with the highest average wind speed) is April (6.6mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in December
Lancaster, NH
- Average humidity in December: 86%
The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is May (76%).
Average rainfall in December
Lancaster, NH
- Average rainfall in December: 2.48"
The wettest month (with the highest rainfall) is October (2.95").
The driest month (with the least rainfall) is August (1.97").
Average rainfall days in December
Lancaster, NH
- Average rainfall days in December: 9.2 days
The month with the highest number of rainy days is June (17.4 days).
The month with the least rainy days is February (5 days).
Average snowfall in December
Lancaster, NH
- Average snowfall in December: 9.53"
The month with the highest snowfall is February (13.43").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Lancaster, NH
- Average snowfall days in December: 20 days
The month with the highest number of snowfall days is January (21.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Lancaster, NH
- Average daylight in December: 8h and 5min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in December: 3h and 0min
The month with the most sunshine is August (Average sunshine: 9h and 30min).
The months with the least sunshine are January and February (Average sunshine: 2h and 36min).
Average sunshine days in December
Lancaster, NH
- Average sunshine days in December: 8 days
The month with the most sunshine days is September (15.4 days).
The month with the least sunshine days is February (6.3 days).
Average UV index in December
Lancaster, NH
- Average UV index in December: 1
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February and December (UV index 1).
Average cloud cover in December
Lancaster, NH
- Average cloud cover in December: 72
The month with the most cloud cover is February (Cloud cover 76).
The month with the least cloud cover is July (Cloud cover 42).
Average visibility in December
Lancaster, NH
- Average visibility in December: 4mi
The months with the highest visibility are May, June, July and November (5mi).
The months with the lowest visibility are January, February, March, April, August, September, October and December (4mi).
Lancaster, New Hampshire, USA
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