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
The transition into December involves a decrease in the average high-temperature, falling from a refreshing 55.6°F (13.1°C) in November to a frosty 46.6°F (8.1°C). Throughout December, Matthews's nights cool down to an average of 34.2°F (1.2°C).Humidity
The average relative humidity in December in Matthews is 77%.Rainfall
In Matthews, Missouri, in December, it is raining for 10.9 days, with typically 3.03" (77mm) of accumulated precipitation. Throughout the year, there are 158.6 rainfall days, and 38.5" (978mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall. In December, it is snowing for 1.6 days. Throughout December, 0.67" (17mm) of snow is accumulated. In Matthews, during the entire year, snow falls for 11 days and aggregates up to 5.08" (129mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 42min of daylight.On the first day of the month, sunrise is at 6:52 am and sunset at 4:42 pm. On the last day of December, sunrise is at 7:10 am and sunset at 4:52 pm CST.
Sunshine
The average sunshine in December is 5h.UV index
January and December, with an average maximum UV index of 2, are months with the lowest UV index in Matthews. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for the average person.Note: In December, the maximum UV index of 2 transforms into these recommendations:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. To protect against the Sun's most potent rays, avoid direct exposure around midday. Always opt for UVA and UVB-resistant sunglasses on radiant days. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are December temperatures?
What is the average humidity in December?
How many days does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When is the sunrise / sunset in December?
How many hours of sunshine does Matthews have in December?
When is the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Matthews, MO
- Average high temperature in December: 46.6°F
The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (41.9°F).
- Average low temperature in December: 34.2°F
The month with the highest average low temperature is July (70.3°F).
The coldest month (with the lowest average low temperature) is January (29.1°F).
Average pressure in December
Matthews, MO
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Matthews, MO
- Average wind speed in December: 8.7mph
The windiest month (with the highest average wind speed) is February (9.4mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).
Average humidity in December
Matthews, MO
- Average humidity in December: 77%
The month with the highest relative humidity is March (78%).
The month with the lowest relative humidity is October (68%).
Average rainfall in December
Matthews, MO
- Average rainfall in December: 3.03"
The wettest month (with the highest rainfall) is April (4.45").
The driest month (with the least rainfall) is September (1.57").
Average rainfall days in December
Matthews, MO
- Average rainfall days in December: 10.9 days
The month with the highest number of rainy days is May (16.7 days).
The month with the least rainy days is January (9.8 days).
Average snowfall in December
Matthews, MO
- Average snowfall in December: 0.67"
The month with the highest snowfall is February (1.81").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Matthews, MO
- Average snowfall days in December: 1.6 days
The month with the highest number of snowfall days is February (3.7 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
Matthews, MO
- Average daylight in December: 9h and 4min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in December: 5h and 0min
The month with the most sunshine is June (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in December
Matthews, MO
- Average sunshine days in December: 17.8 days
The month with the most sunshine days is October (19 days).
The month with the least sunshine days is June (11.8 days).
Average UV index in December
Matthews, MO
- Average UV index in December: 2
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in December
Matthews, MO
- Average cloud cover in December: 46
The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is June (Cloud cover 25).
Average visibility in December
Matthews, 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).
Matthews, Missouri, USA
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