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
In Clay, the average high-temperature in December decreases from a frosty 49.5°F (9.7°C) in November to a cold 37.4°F (3°C). The average nighttime temperature in Clay lowers to a subzero cold 25.2°F (-3.8°C) throughout December.Humidity
The average relative humidity in December is 79%.Rainfall
In December, the rain falls for 6.8 days. Throughout December, 1.18" (30mm) of precipitation is accumulated. Throughout the year, there are 136.5 rainfall days, and 26.69" (678mm) of precipitation is accumulated.Snowfall
Months with snowfall in Clay are January through April, October through December. In Clay, during December, snow falls for 4.9 days and regularly aggregates up to 1.46" (37mm) of snow. In Clay, during the entire year, snow falls for 24.6 days and aggregates up to 11.34" (288mm) of snow.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 7:13 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 4:54 pm CST.
Sunshine
The average sunshine in December is 4.8h.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 minimal health hazard from exposure to the Sun's UV radiation for the average person.Note: In December, the UV index of 2 transforms into the following advice:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in Clay?
What is the average humidity in December in Clay?
How many days does it rain in December in Clay?
How much does it snow in Clay in December?
What is the month with the shortest days in Clay?
How many hours of daylight does Clay have in December?
When is the sunrise / sunset in December in Clay?
How many hours of sunshine does Clay have in December?
What is the month with the lowest UV index in Clay?
What is the UV index intensity in December in Clay?
Average temperature in December
Clay, MO
- Average high temperature in December: 37.4°F
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (32°F).
- Average low temperature in December: 25.2°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 (18.9°F).
Average pressure in December
Clay, MO
- Average pressure in December: 30.12"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
Clay, MO
- Average wind speed in December: 9.9mph
The windiest months (with the highest average wind speed) are January and February (10.5mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).
Average humidity in December
Clay, MO
- Average humidity in December: 79%
The month with the highest relative humidity is June (82%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Clay, MO
- Average rainfall in December: 1.18"
The wettest month (with the highest rainfall) is June (3.66").
The driest month (with the least rainfall) is January (1.06").
Average rainfall days in December
Clay, MO
- Average rainfall days in December: 6.8 days
The month with the highest number of rainy days is May (17.2 days).
The month with the least rainy days is January (4.8 days).
Average snowfall in December
Clay, MO
- Average snowfall in December: 1.46"
The month with the highest snowfall is January (3.5").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Clay, MO
- Average snowfall days in December: 4.9 days
The month with the highest number of snowfall days is January (7.9 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
Clay, 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 24min).
- Average sunshine in December: 4h and 5min
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 30min).
Average sunshine days in December
Clay, MO
- Average sunshine days in December: 20 days
The month with the most sunshine days is December (20 days).
The month with the least sunshine days is June (11.4 days).
Average UV index in December
Clay, 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
Clay, MO
- Average cloud cover in December: 48
The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in December
Clay, 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).
Clay, Missouri, USA
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