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
Setting in of December comes with a decrease in the average high-temperature, moving from a chilly 48.9°F (9.4°C) in November to an icy 38.1°F (3.4°C). In the month of December, Castleton experiences an average low-temperature of 27.7°F (-2.4°C).Humidity
January and December, with an average relative humidity of 83%, are the most humid months in Castleton.Rainfall
In December, in Castleton, the rain falls for 8 days. Throughout December, 1.5" (38mm) of precipitation is accumulated. In Castleton, during the entire year, the rain falls for 141 days and collects up to 20.98" (533mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. In Castleton, during December, snow falls for 6.4 days and regularly aggregates up to 1.93" (49mm) of snow. Throughout the year, in Castleton, there are 29.1 snowfall days, and 7.99" (203mm) of snow is accumulated.Daylight
With an average of 9h and 24min of daylight, December has the shortest days of the year in Castleton.On the first day of the month, sunrise is at 7:47 am and sunset at 5:19 pm. On the last day of December, sunrise is at 8:05 am and sunset at 5:29 pm EST.
Sunshine
In December, the average sunshine is 4.1h.UV index
December is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for the average person.Note: A daily maximum UV index of 1 in December translates into the following instructions:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Frequently asked questions
Is it cold in Castleton during December?
What are the most humid months in Castleton?
What is the average humidity in December in Castleton?
How many days does it rain in December in Castleton?
How many days does it snow in December in Castleton?
What is the month with the shortest days in Castleton?
What is the average length of the day in December in Castleton?
When are sunrise and sunset in December in Castleton?
How long on average sun shines in December in Castleton?
What is the month with the lowest UV index in Castleton?
How high is the UV index in December in Castleton?
Average temperature in December
Castleton, IN
- Average high temperature in December: 38.1°F
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (32.5°F).
- Average low temperature in December: 27.7°F
The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).
Average pressure in December
Castleton, IN
- Average pressure in December: 30.12"Hg
The months with the highest atmospheric pressure are January and November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Castleton, IN
- Average wind speed in December: 9.3mph
The windiest month (with the highest average wind speed) is January (10mph).
The calmest month (with the lowest average wind speed) is August (5.9mph).
Average humidity in December
Castleton, IN
- Average humidity in December: 83%
The months with the highest relative humidity are January and December (83%).
The month with the lowest relative humidity is October (74%).
Average rainfall in December
Castleton, IN
- Average rainfall in December: 1.5"
The wettest month (with the highest rainfall) is May (2.64").
The driest month (with the least rainfall) is February (1.18").
Average rainfall days in December
Castleton, IN
- Average rainfall days in December: 8 days
The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is January (6 days).
Average snowfall in December
Castleton, IN
- Average snowfall in December: 1.93"
The month with the highest snowfall is February (2.01").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Castleton, IN
- Average snowfall days in December: 6.4 days
The month with the highest number of snowfall days is January (8.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Castleton, IN
- 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 1min
The months with the most sunshine are June and July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in December
Castleton, IN
- Average sunshine days in December: 17.5 days
The months with the most sunshine days are October and November (18.7 days).
The month with the least sunshine days is May (11.3 days).
Average UV index in December
Castleton, IN
- Average UV index in December: 1
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Castleton, IN
- Average cloud cover in December: 58
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in December
Castleton, IN
- 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).
Castleton, Indiana, USA
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