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
With the onset of December, the average high-temperature subtly recedes from November's cool 52.5°F (11.4°C) to a frosty 43.9°F (6.6°C). The average low-temperature, in December, in Siloam, is a cold 32.7°F (0.4°C).Humidity
In Siloam, the average relative humidity in December is 78%.Rainfall
In Siloam, in December, it is raining for 11 days, with typically 2.95" (75mm) of accumulated precipitation. Throughout the year, in Siloam, there are 154.3 rainfall days, and 29.25" (743mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, November and December. In Siloam, in December, snow falls for 3.2 days, with typically accumulated 1.14" (29mm) of snow. In Siloam, during the entire year, snow falls for 18.9 days and aggregates up to 8.39" (213mm) of snow.Daylight
December has the shortest days of the year in Siloam, with an average of 9h and 24min of daylight.On the first day of the month, sunrise is at 7:01 am and sunset at 4:32 pm. On the last day of December, in Siloam, New Jersey, sunrise is at 7:19 am and sunset at 4:41 pm EST.
Sunshine
The average sunshine in December is 5h.UV index
The months with the lowest UV index in Siloam, New Jersey, 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 low threat to health from unprotected exposure to Sun's UV rays for the average person.Note: In December, a daily UV index of 2 turns into the following recommendations:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Siloam in December?
What is the average humidity in December in Siloam?
How much does it rain in Siloam in December?
How many days does it snow in December in Siloam?
What is the month with the shortest days in Siloam?
How many hours of daylight does Siloam have in December?
What time are sunrise and sunset in December in Siloam?
How many hours of sunshine does Siloam have in December?
When is the lowest UV index in Siloam?
How high is the UV index in December in Siloam?
Average temperature in December
Siloam, NJ
- Average high temperature in December: 43.9°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (37.4°F).
- Average low temperature in December: 32.7°F
The month with the highest average low temperature is July (67.8°F).
The coldest month (with the lowest average low temperature) is January (25.3°F).
Average pressure in December
Siloam, NJ
- Average pressure in December: 30.08"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Siloam, NJ
- Average wind speed in December: 8.5mph
The windiest month (with the highest average wind speed) is March (9.3mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity in December
Siloam, NJ
- Average humidity in December: 78%
The months with the highest relative humidity are June and October (79%).
The month with the lowest relative humidity is April (73%).
Average rainfall in December
Siloam, NJ
- Average rainfall in December: 2.95"
The wettest month (with the highest rainfall) is July (3.5").
The driest month (with the least rainfall) is September (1.69").
Average rainfall days in December
Siloam, NJ
- Average rainfall days in December: 11 days
The month with the highest number of rainy days is July (18 days).
The month with the least rainy days is January (8.4 days).
Average snowfall in December
Siloam, NJ
- Average snowfall in December: 1.14"
The month with the highest snowfall is March (3.23").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
Siloam, NJ
- Average snowfall days in December: 3.2 days
The month with the highest number of snowfall days is January (5.3 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Siloam, NJ
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in December: 5h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in December
Siloam, NJ
- Average sunshine days in December: 18.4 days
The month with the most sunshine days is November (19 days).
The month with the least sunshine days is July (10.8 days).
Average UV index in December
Siloam, NJ
- 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
Siloam, NJ
- Average cloud cover in December: 47
The months with the most cloud cover are February, March and December (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 31).
Average visibility in December
Siloam, NJ
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Siloam, New Jersey, USA
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