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 Lee's Summit enters December, the average high-temperature decreases from the a fresh 52.7°F (11.5°C) of November to a wintry 41.2°F (5.1°C). December's nights observe an average temperature of 27.9°F (-2.3°C).Humidity
In December, the average relative humidity is 74%.Rainfall
In December, the rain falls for 6 days. Throughout December, 1.61" (41mm) of precipitation is accumulated. In Lee's Summit, during the entire year, the rain falls for 137.8 days and collects up to 29.53" (750mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Lee's Summit, in December, during 3.3 snowfall days, 0.94" (24mm) of snow is typically accumulated. Throughout the year, there are 19.4 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 30min of daylight.On the first day of the month, sunrise is at 7:17 am and sunset at 4:55 pm. On the last day of December, sunrise is at 7:36 am and sunset at 5:05 pm CST.
Sunshine
The average sunshine in December is 5.4h.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 of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for the ordinary person.Note: The daily maximum UV index of 2 in December interprets into the following advice:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is December cold?
What is the average humidity in December?
How much does it rain in December?
How much does it snow in December?
What is the month with the shortest days in Lee's Summit?
What is the average length of the day in December?
What time are sunrise and sunset in December?
How many hours of sunshine does Lee's Summit have in December?
What are the months with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Lee's Summit, MO
- Average high temperature in December: 41.2°F
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (37.4°F).
- Average low temperature in December: 27.9°F
The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (23.2°F).
Average pressure in December
Lee's Summit, MO
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in December
Lee's Summit, MO
- Average wind speed in December: 9.3mph
The windiest months (with the highest average wind speed) are February, March and April (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity in December
Lee's Summit, MO
- Average humidity in December: 74%
The months with the highest relative humidity are May and June (79%).
The month with the lowest relative humidity is October (70%).
Average rainfall in December
Lee's Summit, MO
- Average rainfall in December: 1.61"
The wettest month (with the highest rainfall) is May (4.29").
The driest month (with the least rainfall) is January (0.98").
Average rainfall days in December
Lee's Summit, MO
- Average rainfall days in December: 6 days
The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is January (5.6 days).
Average snowfall in December
Lee's Summit, MO
- Average snowfall in December: 0.94"
The month with the highest snowfall is February (2.83").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Lee's Summit, MO
- Average snowfall days in December: 3.3 days
The month with the highest number of snowfall days is January (5.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Lee's Summit, MO
- Average daylight in December: 9h and 3min
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 2min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).
Average sunshine days in December
Lee's Summit, MO
- Average sunshine days in December: 22.2 days
The month with the most sunshine days is December (22.2 days).
The month with the least sunshine days is June (11.8 days).
Average UV index in December
Lee's Summit, MO
- 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
Lee's Summit, MO
- Average cloud cover in December: 42
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 26).
Average visibility in December
Lee's Summit, 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).
Lee's Summit, Missouri, USA
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