December weather forecastThorntown, IN
December
Weather in December
The first month of the winter, December, is still a cold month in Thorntown, Indiana, with temperature in the range of an average high of 37.6°F (3.1°C) and an average low of 27.1°F (-2.7°C).Temperature
In the transition to December, Thorntown observes a drop in the average high-temperature, moving from a frosty 48°F (8.9°C) in November to a cold 37.6°F (3.1°C). Thorntown anticipates an average minimum temperature of 27.1°F (-2.7°C) in the month of December.Humidity
January, July and December, with an average relative humidity of 83%, are the most humid months.Rainfall
In Thorntown, Indiana, in December, during 9.1 rainfall days, 2.09" (53mm) of precipitation is typically accumulated. Throughout the year, there are 163.9 rainfall days, and 31.54" (801mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall. In Thorntown, in December, snow falls for 8.7 days, with typically accumulated 3.31" (84mm) of snow. Throughout the year, there are 40.6 snowfall days, and 13.46" (342mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 24min of daylight.On the first day of the month, sunrise is at 7:50 am and sunset at 5:21 pm. On the last day of December, sunrise is at 8:08 am and sunset at 5:31 pm EST.
Sunshine
In December, the average sunshine is 4h.UV index
December is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for average individuals.Note: The daily maximum UV index of 1 in December interprets into the following advice:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Thorntown, IN
- Average high temperature in December: 37.6°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (32.2°F).
- Average low temperature in December: 27.1°F
The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).
Average pressure in December
Thorntown, IN
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Thorntown, IN
- Average wind speed in December: 9.7mph
The windiest months (with the highest average wind speed) are January and February (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).
Average humidity in December
Thorntown, IN
- Average humidity in December: 83%
The months with the highest relative humidity are January, July and December (83%).
The month with the lowest relative humidity is October (74%).
Average rainfall in December
Thorntown, IN
- Average rainfall in December: 2.09"
The wettest month (with the highest rainfall) is April (3.86").
The driest month (with the least rainfall) is February (1.85").
Average rainfall days in December
Thorntown, IN
- Average rainfall days in December: 9.1 days
The month with the highest number of rainy days is May (20.3 days).
The months with the least rainy days are January and February (7.8 days).
Average snowfall in December
Thorntown, IN
- Average snowfall in December: 3.31"
The month with the highest snowfall is February (3.62").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Thorntown, IN
- Average snowfall days in December: 8.7 days
The month with the highest number of snowfall days is January (11.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Thorntown, IN
- Average daylight in December: 9h and 24min
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 0min
The month with the most sunshine is June (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in December
Thorntown, IN
- Average sunshine days in December: 13.9 days
The month with the most sunshine days is November (17 days).
The month with the least sunshine days is June (9.3 days).
Average UV index in December
Thorntown, 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
Thorntown, IN
- Average cloud cover in December: 59
The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in December
Thorntown, IN
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).
