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 comes with a decrease in the average high-temperature, falling from a frosty 48.4°F (9.1°C) in November to a cold 36°F (2.2°C). Nighttime temperatures in December average to a subzero cold 24.1°F (-4.4°C) in Lancaster.Humidity
In Lancaster, the average relative humidity in December is 79%.Rainfall
In Lancaster, in December, during 7.7 rainfall days, 1.34" (34mm) of precipitation is typically accumulated. Throughout the year, in Lancaster, there are 133.4 rainfall days, and 26.54" (674mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. In Lancaster, during December, snow falls for 6.7 days and regularly aggregates up to 1.81" (46mm) of snow. In Lancaster, during the entire year, snow falls for 34.8 days and aggregates up to 16.18" (411mm) of snow.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:14 am and sunset at 4:43 pm. On the last day of the month, sunrise is at 7:33 am and sunset at 4:53 pm CST.
Sunshine
In Lancaster, the average sunshine in December is 4.7h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low health risk from unsafe exposure to UV radiation for average individuals.Note: A daily high UV index of 2 in December leads to these guidelines:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Experience reduced UV exposure by about half when donning a wide-brim 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
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 in Lancaster?
What is the month with the shortest days in Lancaster?
How many hours of daylight does Lancaster have in December?
What time are sunrise and sunset in December in Lancaster?
How many hours of sunshine does Lancaster have in December?
What is the month with the lowest UV index in Lancaster?
What is the UV index reading in December in Lancaster?
Average temperature in December
Lancaster, MO
- Average high temperature in December: 36°F
The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (30.2°F).
- Average low temperature in December: 24.1°F
The month with the highest average low temperature is July (66.4°F).
The coldest month (with the lowest average low temperature) is January (17.6°F).
Average pressure in December
Lancaster, MO
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in December
Lancaster, MO
- Average wind speed in December: 10.3mph
The windiest month (with the highest average wind speed) is January (10.8mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in December
Lancaster, MO
- Average humidity in December: 79%
The month with the highest relative humidity is June (83%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Lancaster, MO
- Average rainfall in December: 1.34"
The wettest month (with the highest rainfall) is June (3.86").
The driest month (with the least rainfall) is January (1.26").
Average rainfall days in December
Lancaster, MO
- Average rainfall days in December: 7.7 days
The months with the highest number of rainy days are May and June (16.8 days).
The months with the least rainy days are January and February (6 days).
Average snowfall in December
Lancaster, MO
- Average snowfall in December: 1.81"
The month with the highest snowfall is January (4.84").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Lancaster, MO
- Average snowfall days in December: 6.7 days
The month with the highest number of snowfall days is January (10.8 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
Lancaster, MO
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 4h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in December
Lancaster, MO
- Average sunshine days in December: 17.5 days
The month with the most sunshine days is October (19.5 days).
The month with the least sunshine days is June (11.2 days).
Average UV index in December
Lancaster, MO
- 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, MO
- Average cloud cover in December: 49
The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are July, August and September (Cloud cover 28).
Average visibility in December
Lancaster, MO
- 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).
Lancaster, Missouri, USA
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