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
As December begins, there is a decrease in the average high-temperature, falling from a fresh 55.2°F (12.9°C) in November to a frosty 44.6°F (7°C). In Lamar Heights, an average low-temperature of 30.6°F (-0.8°C) is recorded during December nights.Humidity
In December, the average relative humidity is 74%.Rainfall
January and December are months with the least rain when the rain falls for 6.7 days and typically aggregates up to 1.5" (38mm) of rain.Snowfall
Months with snowfall are January through May, November and December. In December, it is snowing for 3.1 days. Throughout December, 0.79" (20mm) of snow is accumulated. Throughout the year, in Lamar Heights, there are 15.5 snowfall days, and 5.98" (152mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 36min of daylight.On the first day of December, sunrise is at 7:13 am and sunset at 4:59 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 5:09 pm CST.
Sunshine
In December, the average sunshine is 5.5h.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 reading of 2, and below, represents a low health risk from exposure to the Sun's UV rays for the average person.Note: The daily high UV index of 2 in December translates into this advice:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in December?
What is the average humidity in December?
What is the driest month?
How much does it rain in December?
How much does it snow in December?
What is the month with the shortest days in Lamar Heights?
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?
When is the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Lamar Heights, MO
- Average high temperature in December: 44.6°F
The warmest month (with the highest average high temperature) is July (88.9°F).
The month with the lowest average high temperature is January (41.4°F).
- Average low temperature in December: 30.6°F
The month with the highest average low temperature is July (69.8°F).
The coldest month (with the lowest average low temperature) is January (26.2°F).
Average pressure in December
Lamar Heights, MO
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Lamar Heights, MO
- Average wind speed in December: 9.8mph
The windiest month (with the highest average wind speed) is March (10.8mph).
The calmest month (with the lowest average wind speed) is July (7mph).
Average humidity in December
Lamar Heights, MO
- Average humidity in December: 74%
The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Lamar Heights, MO
- Average rainfall in December: 1.5"
The wettest month (with the highest rainfall) is May (5.79").
The driest months (with the least rainfall) are January and December (1.5").
Average rainfall days in December
Lamar Heights, MO
- Average rainfall days in December: 6.7 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is January (6.3 days).
Average snowfall in December
Lamar Heights, MO
- Average snowfall in December: 0.79"
The month with the highest snowfall is February (2.24").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
Lamar Heights, MO
- Average snowfall days in December: 3.1 days
The month with the highest number of snowfall days is February (5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Lamar Heights, MO
- Average daylight in December: 9h and 4min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in December: 5h and 3min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 5h and 18min).
Average sunshine days in December
Lamar Heights, MO
- Average sunshine days in December: 20.8 days
The month with the most sunshine days is December (20.8 days).
The month with the least sunshine days is May (11.7 days).
Average UV index in December
Lamar Heights, MO
- Average UV index in December: 2
The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Lamar Heights, MO
- Average cloud cover in December: 41
The months with the most cloud cover are February and March (Cloud cover 46).
The months with the least cloud cover are June and July (Cloud cover 26).
Average visibility in December
Lamar Heights, 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).
Lamar Heights, Missouri, USA
Weather forecast for your location
2. Allow the app to use your location