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 start of December signals a decrease in the average high-temperature, transitioning from a cool 52.9°F (11.6°C) in November to a wintry 41.2°F (5.1°C). In Troy, the average nighttime temperature during December is a subzero cold 29.1°F (-1.6°C).Humidity
In December, the average relative humidity is 76%.Rainfall
In December, the rain falls for 7.4 days. Throughout December, 1.73" (44mm) of precipitation is accumulated. In Troy, during the entire year, the rain falls for 142.7 days and collects up to 29.25" (743mm) of precipitation.Snowfall
Months with snowfall in Troy are January through March, November and December. In Troy, in December, snow falls for 3.6 days, with typically accumulated 1.42" (36mm) of snow. In Troy, during the entire year, snow falls for 18.6 days and aggregates up to 8.31" (211mm) of snow.Daylight
With an average of 9h and 30min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:04 am and sunset at 4:42 pm. On the last day of December, in Troy, Missouri, sunrise is at 7:22 am and sunset at 4:51 pm CST.
Sunshine
In Troy, 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 value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for the average person.Note: The UV index of 2 during December translates into the following guidance:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Frequently asked questions
How cold is it in Troy in December?
What is the average humidity in December in Troy?
How much does it rain in Troy in December?
How much does it snow in Troy in December?
What is the month with the shortest days in Troy?
How many hours of daylight does Troy have in December?
What time are sunrise and sunset in December in Troy?
How many hours of sunshine does Troy have in December?
When is the lowest UV index in Troy?
How high is the UV index in December in Troy?
Average temperature in December
Troy, 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 (36.3°F).
- Average low temperature in December: 29.1°F
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (23.2°F).
Average pressure in December
Troy, 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 (29.91"Hg).
Average wind speed in December
Troy, MO
- Average wind speed in December: 8.6mph
The windiest month (with the highest average wind speed) is January (9.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity in December
Troy, MO
- Average humidity in December: 76%
The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Troy, MO
- Average rainfall in December: 1.73"
The wettest month (with the highest rainfall) is May (3.46").
The driest month (with the least rainfall) is January (1.38").
Average rainfall days in December
Troy, MO
- Average rainfall days in December: 7.4 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (6.3 days).
Average snowfall in December
Troy, MO
- Average snowfall in December: 1.42"
The months with the highest snowfall are January and February (2.68").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Troy, MO
- Average snowfall days in December: 3.6 days
The month with the highest number of snowfall days is January (6.2 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
Troy, 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: 4h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in December
Troy, MO
- Average sunshine days in December: 19.6 days
The month with the most sunshine days is December (19.6 days).
The month with the least sunshine days is May (11.9 days).
Average UV index in December
Troy, 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
Troy, MO
- Average cloud cover in December: 48
The month with the most cloud cover is January (Cloud cover 51).
The months with the least cloud cover are June and August (Cloud cover 30).
Average visibility in December
Troy, MO
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
Troy, Missouri, USA
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