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
Start of December brings a shift in the average high-temperature, falling from November's fresh 52.9°F (11.6°C) to a wintry 41.2°F (5.1°C). Troy in December anticipates an average nighttime temperature of 29.1°F (-1.6°C).Humidity
In Troy, the average relative humidity in December is 76%.Rainfall
In Troy, Missouri, in December, during 7.4 rainfall days, 1.73" (44mm) of precipitation is typically 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 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. Throughout the year, there are 18.6 snowfall days, and 8.31" (211mm) 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 December, sunrise is at 7:04 am and sunset at 4:42 pm. On the last day of the month, 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 low threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: In December, the maximum UV index of 2 transforms into these recommendations:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in December?
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?
How many hours of daylight does Troy have in December?
When are sunrise and sunset in December?
How many hours of sunshine does Troy have in December?
When is the lowest UV index?
How high is the UV index in December?
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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