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
With the beginning of December, the average high-temperature shows a decrease, transitioning from a fresh 50.9°F (10.5°C) in November to a wintry 38.7°F (3.7°C). Sumner's nights in December experience an average temperature drop to a subzero cold 26.1°F (-3.3°C).Humidity
The average relative humidity in December in Sumner is 78%.Rainfall
December is the month with the least rainfall. Rain falls for 4.5 days and accumulates 0.43" (11mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. In December, in Sumner, it is snowing for 4.1 days. Throughout December, 0.35" (9mm) of snow is accumulated. Throughout the year, in Sumner, there are 20.6 snowfall days, and 2.99" (76mm) 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 December, sunrise is at 7:15 am and sunset at 4:49 pm. On the last day of the month, sunrise is at 7:33 am and sunset at 4:58 pm CST.
Sunshine
In Sumner, the average sunshine in December is 5h.UV index
The months with the lowest UV index in Sumner are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: A daily high UV index of 2 in December leads to these guidelines:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. When the Sun is at its strongest around midday, find shade and limit exposure. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
Frequently asked questions
Is it cold in Sumner during December?
What is the average humidity in December in Sumner?
What is the driest month in Sumner?
How many days does it rain in December in Sumner?
How much does it snow in Sumner in December?
What is the month with the shortest days in Sumner?
What is the average length of the day in December in Sumner?
When is the sunrise / sunset in December in Sumner?
How many hours of sunshine does Sumner have in December?
What are the months with the lowest UV index in Sumner?
What is the UV index reading in December in Sumner?
Average temperature in December
Sumner, MO
- Average high temperature in December: 38.7°F
The warmest month (with the highest average high temperature) is July (84.6°F).
The month with the lowest average high temperature is January (33.6°F).
- Average low temperature in December: 26.1°F
The month with the highest average low temperature is July (67.3°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).
Average pressure in December
Sumner, MO
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in December
Sumner, MO
- Average wind speed in December: 9.4mph
The windiest month (with the highest average wind speed) is March (10.1mph).
The calmest months (with the lowest average wind speed) are July and August (6.5mph).
Average humidity in December
Sumner, MO
- Average humidity in December: 78%
The month with the highest relative humidity is June (81%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Sumner, MO
- Average rainfall in December: 0.43"
The wettest months (with the highest rainfall) are May and June (1.46").
The driest month (with the least rainfall) is December (0.43").
Average rainfall days in December
Sumner, MO
- Average rainfall days in December: 4.5 days
The month with the highest number of rainy days is May (12.3 days).
The month with the least rainy days is January (4.2 days).
Average snowfall in December
Sumner, MO
- Average snowfall in December: 0.35"
The month with the highest snowfall is January (1.02").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Sumner, MO
- Average snowfall days in December: 4.1 days
The month with the highest number of snowfall days is January (6.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Sumner, MO
- 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: 5h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).
Average sunshine days in December
Sumner, MO
- Average sunshine days in December: 23.5 days
The month with the most sunshine days is December (23.5 days).
The month with the least sunshine days is May (13.8 days).
Average UV index in December
Sumner, 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
Sumner, MO
- Average cloud cover in December: 45
The month with the most cloud cover is January (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in December
Sumner, 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).
Sumner, Missouri, USA
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