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 onset of December results in a small decrease in the average high-temperature, moderately receding from a cool 53.1°F (11.7°C) in November to a chilly 44.2°F (6.8°C). The average low-temperature of 32.9°F (0.5°C) is witnessed during December.Humidity
In Longfellow, the average relative humidity in December is 76%.Rainfall
In December, in Longfellow, the rain falls for 10.2 days. Throughout December, 2.24" (57mm) of precipitation is accumulated. Throughout the year, in Longfellow, there are 159.3 rainfall days, and 30.31" (770mm) of precipitation is accumulated.Snowfall
Months with snowfall in Longfellow are January through March, November and December. In December, it is snowing for 2.9 days. Throughout December, 1.14" (29mm) of snow is accumulated. In Longfellow, during the entire year, snow falls for 15.9 days and aggregates up to 8.7" (221mm) of snow.Daylight
With an average of 9h and 30min of daylight, December has the shortest days of the year in Longfellow.On the first day of the month, sunrise is at 7:08 am and sunset at 4:44 pm. On the last day of December, in Longfellow, Maryland, sunrise is at 7:26 am and sunset at 4:54 pm EST.
Sunshine
The average sunshine in December in Longfellow is 5.2h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for average individuals.Note: An average UV index of 2 in December transforms into this advice:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. During bright days, sunglasses that offer UVA and UVB defense are recommended. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Frequently asked questions
Is it cold in Longfellow during December?
What is the average humidity in December in Longfellow?
How much does it rain in Longfellow in December?
How much does it snow in Longfellow in December?
What is the month with the shortest days in Longfellow?
What is the average length of the day in December in Longfellow?
When are sunrise and sunset in December in Longfellow?
How long on average sun shines in December in Longfellow?
When is the lowest UV index in Longfellow?
What is the UV index reading in December in Longfellow?
Average temperature in December
Longfellow, MD
- Average high temperature in December: 44.2°F
The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is January (38.1°F).
- Average low temperature in December: 32.9°F
The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).
Average pressure in December
Longfellow, 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 (29.94"Hg).
Average wind speed in December
Longfellow, MD
- Average wind speed in December: 7.8mph
The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in December
Longfellow, MD
- Average humidity in December: 76%
The months with the highest relative humidity are May and October (77%).
The months with the lowest relative humidity are April and July (72%).
Average rainfall in December
Longfellow, MD
- Average rainfall in December: 2.24"
The wettest month (with the highest rainfall) is August (4.06").
The driest month (with the least rainfall) is January (1.85").
Average rainfall days in December
Longfellow, MD
- Average rainfall days in December: 10.2 days
The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is January (8.4 days).
Average snowfall in December
Longfellow, MD
- Average snowfall in December: 1.14"
The month with the highest snowfall is March (3.03").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Longfellow, MD
- Average snowfall days in December: 2.9 days
The month with the highest number of snowfall days is February (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
Longfellow, 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 1min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The months with the least sunshine are January and February (Average sunshine: 5h and 6min).
Average sunshine days in December
Longfellow, MD
- Average sunshine days in December: 17.9 days
The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is May (11 days).
Average UV index in December
Longfellow, 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, February, November and December (UV index 2).
Average cloud cover in December
Longfellow, MD
- Average cloud cover in December: 45
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 29).
Average visibility in December
Longfellow, MD
- 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).
Longfellow, Maryland, USA
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