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 brings a decrease in the average high-temperature, falling from November's cool 50°F (10°C) to a cold 40.3°F (4.6°C). Thiells observes an average low-temperature of 29.3°F (-1.5°C) during December nights.Humidity
In Thiells, the average relative humidity in December is 78%.Rainfall
In Thiells, in December, it is raining for 10.1 days, with typically 3.19" (81mm) of accumulated precipitation. In Thiells, during the entire year, the rain falls for 152.8 days and collects up to 30.79" (782mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In December, in Thiells, New York, it is snowing for 4.4 days. Throughout December, 2.2" (56mm) of snow is accumulated. Throughout the year, there are 22.6 snowfall days, and 12.28" (312mm) of snow is accumulated.Daylight
The month with the shortest days in Thiells is December, with an average of 9h and 18min of daylight.On the first day of the month, sunrise is at 7:02 am and sunset at 4:27 pm. On the last day of December, in Thiells, sunrise is at 7:21 am and sunset at 4:37 pm EST.
Sunshine
The average sunshine in December is 4.9h.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 low threat to health from unsafe exposure to UV radiation for the ordinary person.Note: A maximum high daily UV index of 2 during December translates into the following directions:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Frequently asked questions
Is December cold in Thiells?
What is the average humidity in December in Thiells?
How many days does it rain in December in Thiells?
How many days does it snow in December in Thiells?
What is the month with the shortest days in Thiells?
How many hours of daylight does Thiells have in December?
What time are sunrise and sunset in December in Thiells?
How long on average sun shines in December in Thiells?
What is the month with the lowest UV index in Thiells?
What is the UV index intensity in December in Thiells?
Average temperature in December
Thiells, NY
- Average high temperature in December: 40.3°F
The warmest month (with the highest average high temperature) is July (84.6°F).
The month with the lowest average high temperature is January (34.7°F).
- Average low temperature in December: 29.3°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).
Average pressure in December
Thiells, NY
- Average pressure in December: 30.07"Hg
The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Thiells, NY
- Average wind speed in December: 6.9mph
The windiest months (with the highest average wind speed) are January and March (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in December
Thiells, NY
- Average humidity in December: 78%
The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is April (72%).
Average rainfall in December
Thiells, NY
- Average rainfall in December: 3.19"
The wettest month (with the highest rainfall) is July (3.23").
The driest month (with the least rainfall) is September (1.89").
Average rainfall days in December
Thiells, NY
- Average rainfall days in December: 10.1 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is January (7.3 days).
Average snowfall in December
Thiells, NY
- Average snowfall in December: 2.2"
The month with the highest snowfall is March (3.46").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Thiells, NY
- Average snowfall days in December: 4.4 days
The month with the highest number of snowfall days is February (6.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Thiells, NY
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 4h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in December
Thiells, NY
- Average sunshine days in December: 17.5 days
The month with the most sunshine days is November (20.4 days).
The month with the least sunshine days is July (11.5 days).
Average UV index in December
Thiells, NY
- 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
Thiells, NY
- Average cloud cover in December: 48
The months with the most cloud cover are February, March and December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in December
Thiells, NY
- Average visibility in December: 6mi
The months with the highest visibility are January, March, April, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are February and May (5mi).
Thiells, New York, USA
Weather forecast for your location
2. Allow the app to use your location
