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
The average high-temperature shows a slight dip in December, from November's fresh 53.6°F (12°C) to a chilly 45.3°F (7.4°C). Throughout December, Chillum records an average temperature of 33.3°F (0.7°C) at night.Humidity
May, October and December, with an average relative humidity of 75%, are the most humid months in Chillum.Rainfall
In December, in Chillum, Maryland, the rain falls for 10.4 days. Throughout December, 2.44" (62mm) of precipitation is accumulated. In Chillum, during the entire year, the rain falls for 154.8 days and collects up to 30.28" (769mm) of precipitation.Snowfall
January through April, November and December are months with snowfall in Chillum. In Chillum, during December, snow falls for 2.5 days and regularly aggregates up to 1.34" (34mm) of snow. In Chillum, during the entire year, snow falls for 15 days and aggregates up to 9.17" (233mm) of snow.Daylight
The month with the shortest days in Chillum is December, with an average of 9h and 30min of daylight.On the first day of the month, sunrise is at 7:08 am and sunset at 4:46 pm. On the last day of December, in Chillum, sunrise is at 7:26 am and sunset at 4:55 pm EST.
Sunshine
In Chillum, Maryland, the average sunshine in December is 5h.UV index
January, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Chillum, Maryland. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for the ordinary person.Note: The maximum UV index, 2 during December, leads to the following recommendations:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Frequently asked questions
What is the average December temperature in Chillum?
What are the most humid months in Chillum?
What is the average humidity in December in Chillum?
How much does it rain in Chillum in December?
How many days does it snow in December in Chillum?
What is the month with the shortest days in Chillum?
What is the average length of the day in December in Chillum?
When are sunrise and sunset in December in Chillum?
How long on average sun shines in December in Chillum?
What are the months with the lowest UV index in Chillum?
How high is the UV index in December in Chillum?
Average temperature in December
Chillum, MD
- Average high temperature in December: 45.3°F
The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (39.7°F).
- Average low temperature in December: 33.3°F
The month with the highest average low temperature is July (69.6°F).
The coldest month (with the lowest average low temperature) is January (27.1°F).
Average pressure in December
Chillum, MD
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in December
Chillum, MD
- Average wind speed in December: 7.1mph
The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in December
Chillum, MD
- Average humidity in December: 75%
The months with the highest relative humidity are May, October and December (75%).
The month with the lowest relative humidity is July (69%).
Average rainfall in December
Chillum, MD
- Average rainfall in December: 2.44"
The wettest month (with the highest rainfall) is August (3.86").
The driest month (with the least rainfall) is January (1.89").
Average rainfall days in December
Chillum, MD
- Average rainfall days in December: 10.4 days
The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is November (8.5 days).
Average snowfall in December
Chillum, MD
- Average snowfall in December: 1.34"
The month with the highest snowfall is January (2.87").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Chillum, MD
- Average snowfall days in December: 2.5 days
The month with the highest number of snowfall days is January (4.6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Chillum, MD
- Average daylight in December: 9h and 3min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- 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 54min).
Average sunshine days in December
Chillum, MD
- Average sunshine days in December: 17.7 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is May (12 days).
Average UV index in December
Chillum, MD
- Average UV index in December: 2
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, November and December (UV index 2).
Average cloud cover in December
Chillum, MD
- Average cloud cover in December: 46
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in December
Chillum, MD
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
Chillum, Maryland, USA
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