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
In December, the average high-temperature goes from a chilly 42.8°F (6°C) in November to a freezing cold 30.4°F (-0.9°C). Lisbon records an average nighttime low of 20.5°F (-6.4°C) in December.Humidity
In Lisbon, the average relative humidity in December is 86%.Rainfall
In Lisbon, in December, it is raining for 10.8 days, with typically 1.81" (46mm) of accumulated precipitation. In Lisbon, during the entire year, the rain falls for 159.6 days and collects up to 24.25" (616mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In December, in Lisbon, it is snowing for 15.8 days. Throughout December, 4.65" (118mm) of snow is accumulated. Throughout the year, there are 77.6 snowfall days, and 24.88" (632mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 8h and 54min of daylight.On the first day of the month, sunrise is at 7:19 am and sunset at 4:22 pm. On the last day of December, sunrise is at 7:38 am and sunset at 4:30 pm EST.
Sunshine
In Lisbon, the average sunshine in December is 3h.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for the average person.Note: In December, an average UV index of 1 transforms into the following instructions:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
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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?
What is the average length of the day in December?
What time are sunrise and sunset in December?
How many hours of sunshine does Lisbon have in December?
What are the months with the lowest UV index in Lisbon?
How high is the UV index in December?
Average temperature in December
Lisbon, NY
- Average high temperature in December: 30.4°F
The warmest month (with the highest average high temperature) is July (77°F).
The month with the lowest average high temperature is January (23.7°F).
- Average low temperature in December: 20.5°F
The month with the highest average low temperature is July (59.5°F).
The coldest month (with the lowest average low temperature) is January (10.2°F).
Average pressure in December
Lisbon, NY
- 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 (29.9"Hg).
Average wind speed in December
Lisbon, NY
- Average wind speed in December: 8.5mph
The windiest month (with the highest average wind speed) is February (9.2mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).
Average humidity in December
Lisbon, NY
- Average humidity in December: 86%
The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is April (77%).
Average rainfall in December
Lisbon, NY
- Average rainfall in December: 1.81"
The wettest month (with the highest rainfall) is August (2.6").
The driest month (with the least rainfall) is February (1.61").
Average rainfall days in December
Lisbon, NY
- Average rainfall days in December: 10.8 days
The month with the highest number of rainy days is July (18 days).
The month with the least rainy days is February (6.8 days).
Average snowfall in December
Lisbon, NY
- Average snowfall in December: 4.65"
The month with the highest snowfall is January (6.06").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Lisbon, NY
- Average snowfall days in December: 15.8 days
The month with the highest number of snowfall days is January (19.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Lisbon, NY
- 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 July (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 2h and 48min).
Average sunshine days in December
Lisbon, NY
- Average sunshine days in December: 8.7 days
The month with the most sunshine days is September (14.6 days).
The month with the least sunshine days is February (8.4 days).
Average UV index in December
Lisbon, NY
- Average UV index in December: 1
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Lisbon, NY
- Average cloud cover in December: 68
The months with the most cloud cover are January and February (Cloud cover 71).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility in December
Lisbon, NY
- Average visibility in December: 5mi
The months with the highest visibility are April, May, June, July, September, October and November (6mi).
The month with the lowest visibility is January (4mi).
Lisbon, New York, USA
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