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
Thomaston's average high-temperature decreases in December, falling from a frosty 46.9°F (8.3°C) in November to an icy 35.6°F (2°C). December nights are marked by an average temperature drop to a subzero cold 26.4°F (-3.1°C).Humidity
In December, the average relative humidity in Thomaston is 82%.Rainfall
In December, the rain falls for 8.9 days. Throughout December, 1.46" (37mm) of precipitation is accumulated. 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 December, it is snowing for 11 days. Throughout December, 2.87" (73mm) of snow is accumulated. In Thomaston, during the entire year, snow falls for 52.4 days and aggregates up to 15.83" (402mm) of snow.Daylight
The month with the shortest days in Thomaston is December, with an average of 9h and 12min of daylight.On the first day of the month, sunrise is at 6:54 am and sunset at 4:18 pm. On the last day of December, sunrise is at 7:13 am and sunset at 4:27 pm CST.
Sunshine
The average sunshine in December 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 estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: In December, the maximum UV index of 1 translates into these guidelines:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
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 much does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When are sunrise and sunset in December?
How many hours of sunshine does Thomaston have in December?
What are the months with the lowest UV index?
What is the UV index intensity in December?
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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