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
Thayer in December undergoes a mild reduction in the average high-temperature, shifting from November's chilly 47.3°F (8.5°C) to a cold 36.3°F (2.4°C). In Thayer, the average nighttime temperature during December is a subzero cold 26.4°F (-3.1°C).Humidity
The average relative humidity in December is 81%.Rainfall
In Thayer, in December, it is raining for 9.1 days, with typically 1.34" (34mm) of accumulated precipitation. Throughout the year, there are 153.9 rainfall days, and 23.46" (596mm) of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall in Thayer. In December, it is snowing for 9.3 days. Throughout December, 2.13" (54mm) of snow is accumulated. Throughout the year, there are 44.8 snowfall days, and 12.4" (315mm) of snow is accumulated.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year in Thayer.On the first day of December in Thayer, Indiana, sunrise is at 6:55 am and sunset at 4:21 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 4:30 pm CST.
Sunshine
In Thayer, Indiana, the average sunshine in December is 4.1h.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 vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: The UV index of 1 during December leads to these advisories:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Stay sun-safe with clothing that is both closely woven and worn loosely. 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 Thayer in December?
What is the average humidity in December in Thayer?
How many days does it rain in December in Thayer?
How much does it snow in Thayer in December?
What is the month with the shortest days in Thayer?
How many hours of daylight does Thayer have in December?
What time are sunrise and sunset in December in Thayer?
How many hours of sunshine does Thayer have in December?
What is the month with the lowest UV index in Thayer?
How high is the UV index in December in Thayer?
Average temperature in December
Thayer, IN
- Average high temperature in December: 36.3°F
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (30.2°F).
- Average low temperature in December: 26.4°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (19°F).
Average pressure in December
Thayer, IN
- Average pressure in December: 30.1"Hg
The months with the highest atmospheric pressure are January and November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Thayer, IN
- Average wind speed in December: 9.6mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).
Average humidity in December
Thayer, IN
- Average humidity in December: 81%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Thayer, IN
- Average rainfall in December: 1.34"
The wettest month (with the highest rainfall) is May (3.31").
The driest month (with the least rainfall) is January (1.1").
Average rainfall days in December
Thayer, IN
- Average rainfall days in December: 9.1 days
The month with the highest number of rainy days is May (17.9 days).
The month with the least rainy days is January (6.6 days).
Average snowfall in December
Thayer, IN
- Average snowfall in December: 2.13"
The month with the highest snowfall is February (3.5").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Thayer, IN
- Average snowfall days in December: 9.3 days
The month with the highest number of snowfall days is January (13.2 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
Thayer, IN
- Average daylight in December: 9h and 2min
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 18min).
- Average sunshine in December: 4h and 1min
The months with the most sunshine are July and August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in December
Thayer, IN
- Average sunshine days in December: 14.4 days
The month with the most sunshine days is November (17.5 days).
The months with the least sunshine days are June and July (10.3 days).
Average UV index in December
Thayer, IN
- Average UV index in December: 1
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Thayer, 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 33).
Average visibility in December
Thayer, 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).
Thayer, Indiana, USA
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