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
December brings a drop in Lancaster's average high-temperature, falling from a fresh 50°F (10°C) in November to a wintry 40.1°F (4.5°C). Lancaster records an average low-temperature of 29.3°F (-1.5°C) throughout the month of December.Humidity
In Lancaster, the average relative humidity in December is 82%.Rainfall
In Lancaster, during December, the rain falls for 10.3 days and regularly aggregates up to 1.65" (42mm) of precipitation. In Lancaster, during the entire year, the rain falls for 150.9 days and collects up to 20.35" (517mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. In Lancaster, in December, during 7.8 snowfall days, 1.34" (34mm) of snow is typically accumulated. Throughout the year, there are 38.3 snowfall days, and 7.95" (202mm) 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 the month, sunrise is at 7:32 am and sunset at 5:06 pm. On the last day of December, sunrise is at 7:51 am and sunset at 5:16 pm EST.
Sunshine
The average sunshine in December in Lancaster is 4h.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 reading of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: In December, the maximum UV index of 2 suggests these recommendations:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Enhance your sun protection with tightly woven, yet airy clothing. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Lancaster in December?
What is the average humidity in December in Lancaster?
How many days does it rain in December in Lancaster?
How many days does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
What time are sunrise and sunset in December?
How long on average sun shines in December?
What is the month with the lowest UV index?
How high is the UV index in December?
Average temperature in December
Lancaster, OH
- Average high temperature in December: 40.1°F
The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (33.6°F).
- Average low temperature in December: 29.3°F
The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (21.7°F).
Average pressure in December
Lancaster, OH
- Average pressure in December: 30.13"Hg
The months with the highest atmospheric pressure are January and November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Lancaster, OH
- Average wind speed in December: 8.3mph
The windiest month (with the highest average wind speed) is January (9mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).
Average humidity in December
Lancaster, OH
- Average humidity in December: 82%
The months with the highest relative humidity are January and February (83%).
The months with the lowest relative humidity are April and November (76%).
Average rainfall in December
Lancaster, OH
- Average rainfall in December: 1.65"
The wettest month (with the highest rainfall) is May (2.32").
The driest month (with the least rainfall) is September (1.22").
Average rainfall days in December
Lancaster, OH
- Average rainfall days in December: 10.3 days
The month with the highest number of rainy days is May (17.6 days).
The month with the least rainy days is November (8.3 days).
Average snowfall in December
Lancaster, OH
- Average snowfall in December: 1.34"
The month with the highest snowfall is February (2.24").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Lancaster, OH
- Average snowfall days in December: 7.8 days
The month with the highest number of snowfall days is January (12.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Lancaster, OH
- 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: 4h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in December
Lancaster, OH
- Average sunshine days in December: 14.5 days
The month with the most sunshine days is November (19.1 days).
The month with the least sunshine days is July (10.9 days).
Average UV index in December
Lancaster, OH
- 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, November and December (UV index 2).
Average cloud cover in December
Lancaster, OH
- Average cloud cover in December: 59
The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in December
Lancaster, OH
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, May, June, August, October, November and December (6mi).
The months with the lowest visibility are January, July and September (5mi).
Lancaster, Ohio, USA
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