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
Flat Rock's weather in December involves a decrease in the average high-temperature, moving down from November's cool 51.1°F (10.6°C) to a cold 40.6°F (4.8°C). Flat Rock's average low-temperature for the month of December records at a freezing cold 29.7°F (-1.3°C).Humidity
January, February, July and December, with an average relative humidity of 81%, are the most humid months in Flat Rock.Rainfall
In Flat Rock, in December, it is raining for 11.7 days, with typically 2.24" (57mm) of accumulated precipitation. Throughout the year, in Flat Rock, Indiana, there are 163.5 rainfall days, and 29.29" (744mm) of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall. In Flat Rock, Indiana, in December, during 8.2 snowfall days, 1.89" (48mm) of snow is typically accumulated. In Flat Rock, during the entire year, snow falls for 34.1 days and aggregates up to 8.54" (217mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 24min of daylight.On the first day of December in Flat Rock, sunrise is at 7:44 am and sunset at 5:20 pm. On the last day of the month, sunrise is at 8:03 am and sunset at 5:30 pm EST.
Sunshine
In December, the average sunshine in Flat Rock is 4.3h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: The daily maximum UV index of 2 in December interprets into the following advice:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is December cold in Flat Rock?
What are the most humid months in Flat Rock?
What is the average humidity in December in Flat Rock?
How many days does it rain in December in Flat Rock?
How much does it snow in Flat Rock in December?
What is the month with the shortest days in Flat Rock?
What is the average length of the day in December in Flat Rock?
What time are sunrise and sunset in December in Flat Rock?
How long on average sun shines in December in Flat Rock?
When is the lowest UV index in Flat Rock?
What is the UV index reading in December in Flat Rock?
Average temperature in December
Flat Rock, IN
- Average high temperature in December: 40.6°F
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (35.2°F).
- Average low temperature in December: 29.7°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 (22.5°F).
Average pressure in December
Flat Rock, IN
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Flat Rock, IN
- Average wind speed in December: 8.2mph
The windiest months (with the highest average wind speed) are January and February (8.9mph).
The calmest months (with the lowest average wind speed) are July and August (5.3mph).
Average humidity in December
Flat Rock, IN
- Average humidity in December: 81%
The months with the highest relative humidity are January, February, July and December (81%).
The month with the lowest relative humidity is October (74%).
Average rainfall in December
Flat Rock, IN
- Average rainfall in December: 2.24"
The wettest month (with the highest rainfall) is May (3.5").
The driest month (with the least rainfall) is September (1.73").
Average rainfall days in December
Flat Rock, IN
- Average rainfall days in December: 11.7 days
The month with the highest number of rainy days is May (18.3 days).
The months with the least rainy days are January and February (9.4 days).
Average snowfall in December
Flat Rock, IN
- Average snowfall in December: 1.89"
The month with the highest snowfall is February (2.17").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Flat Rock, IN
- Average snowfall days in December: 8.2 days
The month with the highest number of snowfall days is January (9.6 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
Flat Rock, IN
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in December: 4h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in December
Flat Rock, IN
- Average sunshine days in December: 13.6 days
The month with the most sunshine days is October (17.7 days).
The month with the least sunshine days is May (10.3 days).
Average UV index in December
Flat Rock, IN
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Flat Rock, IN
- Average cloud cover in December: 55
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in December
Flat Rock, IN
- Average visibility in December: 5mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October and November (6mi).
The months with the lowest visibility are July and December (5mi).
Flat Rock, Indiana, USA
Weather forecast for your location
2. Allow the app to use your location