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
December brings a decrease in the average high-temperature, falling from November's chilly 46.9°F (8.3°C) to a cold 35.6°F (2°C). The nighttime temperature dips to a subzero cold 26.4°F (-3.1°C) on average during December.Humidity
The average relative humidity in December is 82%.Rainfall
In Thomaston, in December, it is raining for 8.9 days, with typically 1.46" (37mm) of accumulated precipitation. In Thomaston, during the entire year, the rain falls for 154.3 days and collects up to 26.69" (678mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Thomaston, in December, snow falls for 11 days, with typically accumulated 2.87" (73mm) of snow. Throughout the year, in Thomaston, there are 52.4 snowfall days, and 15.83" (402mm) of snow is accumulated.Daylight
With an average of 9h and 12min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 6:54 am and sunset at 4:18 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 4:27 pm CST.
Sunshine
In December, the average sunshine in Thomaston is 3.6h.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum daily UV index of 1 in December interprets into the following recommendations:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Frequently asked questions
How cold is it in Thomaston in December?
What is the average humidity in December in Thomaston?
How many days does it rain in December in Thomaston?
How many days does it snow in December in Thomaston?
What is the month with the shortest days in Thomaston?
What is the average length of the day in December in Thomaston?
What time are sunrise and sunset in December in Thomaston?
How many hours of sunshine does Thomaston have in December?
What is the month with the lowest UV index in Thomaston?
What is the UV index reading in December in Thomaston?
Average temperature in December
Thomaston, IN
- Average high temperature in December: 35.6°F
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (30°F).
- Average low temperature in December: 26.4°F
The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in December
Thomaston, IN
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Thomaston, IN
- Average wind speed in December: 9.8mph
The windiest month (with the highest average wind speed) is January (10.5mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).
Average humidity in December
Thomaston, IN
- Average humidity in December: 82%
The months with the highest relative humidity are January, February and July (84%).
The month with the lowest relative humidity is October (75%).
Average rainfall in December
Thomaston, IN
- Average rainfall in December: 1.46"
The wettest month (with the highest rainfall) is June (3.46").
The driest month (with the least rainfall) is January (1.34").
Average rainfall days in December
Thomaston, IN
- Average rainfall days in December: 8.9 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is January (6.7 days).
Average snowfall in December
Thomaston, IN
- Average snowfall in December: 2.87"
The month with the highest snowfall is February (4.21").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Thomaston, IN
- Average snowfall days in December: 11 days
The month with the highest number of snowfall days is January (15.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Thomaston, IN
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 3h and 4min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).
Average sunshine days in December
Thomaston, IN
- Average sunshine days in December: 12.7 days
The month with the most sunshine days is November (15 days).
The month with the least sunshine days is April (10.5 days).
Average UV index in December
Thomaston, IN
- Average UV index in December: 1
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Thomaston, IN
- Average cloud cover in December: 62
The month with the most cloud cover is January (Cloud cover 67).
The months with the least cloud cover are July and August (Cloud cover 34).
Average visibility in December
Thomaston, IN
- Average visibility in December: 6mi
The months with the highest visibility are March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, February, July and August (5mi).
Thomaston, Indiana, USA
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