December weather forecastIjamsville, MD
December
Weather in December
December, the first month of the winter in Ijamsville, is also a frosty month, with temperature in the range of an average low of 30.9°F (-0.6°C) and an average high of 43.7°F (6.5°C).Temperature
December is characterized by a mild reduction in the average high-temperature, from a fresh 52.3°F (11.3°C) in November to a chilly 43.7°F (6.5°C). An average low-temperature of 30.9°F (-0.6°C) is expected during December.Humidity
The average relative humidity in December is 78%.Rainfall
In Ijamsville, Maryland, in December, it is raining for 10.4 days, with typically 2.4" (61mm) of accumulated precipitation. Throughout the year, there are 161.7 rainfall days, and 31.89" (810mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through March, May, November and December. In Ijamsville, during December, snow falls for 3.6 days and regularly aggregates up to 2.09" (53mm) of snow. Throughout the year, there are 21.3 snowfall days, and 11.1" (282mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 30min of daylight.On the first day of the month, sunrise is at 7:10 am and sunset at 4:46 pm. On the last day of December, sunrise is at 7:29 am and sunset at 4:56 pm EST.
Sunshine
In December, the average sunshine is 5.1h.UV index
The months with the lowest UV index in Ijamsville are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: A typical high UV index of 2 in December suggests the following recommendations:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. 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
Average temperature in December
Ijamsville, MD
- Average high temperature in December: 43.7°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (37.9°F).
- Average low temperature in December: 30.9°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (24.8°F).
Average pressure in December
Ijamsville, 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
Ijamsville, MD
- Average wind speed in December: 7.2mph
The windiest month (with the highest average wind speed) is March (8mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).
Average humidity in December
Ijamsville, MD
- Average humidity in December: 78%
The months with the highest relative humidity are May and October (79%).
The months with the lowest relative humidity are April and July (74%).
Average rainfall in December
Ijamsville, MD
- Average rainfall in December: 2.4"
The wettest month (with the highest rainfall) is August (3.7").
The driest month (with the least rainfall) is February (2.01").
Average rainfall days in December
Ijamsville, MD
- Average rainfall days in December: 10.4 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is February (9 days).
Average snowfall in December
Ijamsville, MD
- Average snowfall in December: 2.09"
The month with the highest snowfall is March (3.31").
The months with the least snowfall are April, June, July, August, September and October (0").
Average snowfall days in December
Ijamsville, MD
- Average snowfall days in December: 3.6 days
The month with the highest number of snowfall days is January (6.7 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
Ijamsville, MD
- Average daylight in December: 9h and 30min
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 6min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).
Average sunshine days in December
Ijamsville, MD
- Average sunshine days in December: 17.5 days
The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is July (10.9 days).
Average UV index in December
Ijamsville, 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
Ijamsville, 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 30).
Average visibility in December
Ijamsville, 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).
