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 arrival of December, Upperco notices a mild change in the average high-temperature, sliding from November's cool 51.8°F (11°C) to a frosty 43.3°F (6.3°C). Upperco records an average low-temperature of 31.3°F (-0.4°C) throughout the month of December.Humidity
In December, the average relative humidity in Upperco is 78%.Rainfall
In Upperco, in December, during 10.3 rainfall days, 2.44" (62mm) of precipitation is typically accumulated. In Upperco, during the entire year, the rain falls for 158.9 days and collects up to 31.38" (797mm) of precipitation.Snowfall
January through April, October through December are months with snowfall in Upperco. In Upperco, in December, snow falls for 3.9 days, with typically accumulated 1.69" (43mm) of snow. Throughout the year, there are 21.2 snowfall days, and 10.55" (268mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 24min of daylight.On the first day of December, sunrise is at 7:09 am and sunset at 4:43 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 4:53 pm EST.
Sunshine
In Upperco, the average sunshine in December is 5h.UV index
The months with the lowest UV index in Upperco are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: In December, a regular UV index of 2 translates into these guidelines:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Frequently asked questions
Is it cold in Upperco during December?
What is the average humidity in December in Upperco?
How many days does it rain in December in Upperco?
How many days does it snow in December in Upperco?
What is the month with the shortest days in Upperco?
How many hours of daylight does Upperco have in December?
When is the sunrise / sunset in December in Upperco?
How long on average sun shines in December in Upperco?
What is the month with the lowest UV index in Upperco?
What is the UV index reading in December in Upperco?
Average temperature in December
Upperco, MD
- Average high temperature in December: 43.3°F
The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (37.4°F).
- Average low temperature in December: 31.3°F
The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (24.8°F).
Average pressure in December
Upperco, 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
Upperco, MD
- Average wind speed in December: 8.1mph
The windiest month (with the highest average wind speed) is March (8.9mph).
The calmest months (with the lowest average wind speed) are July and August (5.3mph).
Average humidity in December
Upperco, MD
- Average humidity in December: 78%
The month with the highest relative humidity is May (80%).
The months with the lowest relative humidity are January, March, April, July and November (75%).
Average rainfall in December
Upperco, 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 February (1.89").
Average rainfall days in December
Upperco, MD
- Average rainfall days in December: 10.3 days
The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is January (8.3 days).
Average snowfall in December
Upperco, MD
- Average snowfall in December: 1.69"
The month with the highest snowfall is March (3.46").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Upperco, MD
- Average snowfall days in December: 3.9 days
The month with the highest number of snowfall days is January (6.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Upperco, MD
- Average daylight in December: 9h and 2min
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 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 42min).
Average sunshine days in December
Upperco, MD
- Average sunshine days in December: 17.5 days
The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is May (11.2 days).
Average UV index in December
Upperco, 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
Upperco, MD
- Average cloud cover in December: 47
The month with the most cloud cover is March (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in December
Upperco, MD
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).
Upperco, Maryland, USA
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